Ninja - Doing it right

Category:Guides
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This is Ninja, hopefully this will be the guide to be referenced when looking for proper information to playing and equipping the job. As of recent times of Abyssea, new age NINs really have to forgo all of the minor things you learn from 30-75 and beyond; this guide aims to inform of all those small things you should have learned had you leveled the job and spent time through each and every level. Obviously, nothing teaches better than the experience itself but I sure as well will try.
NIN as many people say were originally meant to be damage dealers that sort of found its role as a tank. And this is how I've treated it ever since I started leveling it seriously. I started FFXI as a damage dealer and loved that role. But becoming a bit more involved with end game, for me mindless damage dealing wasn't enough and I wanted to play an important role, and while Abyssea really brought out NINs, MNKs, THFs, and other DD tanks into the spotlight, Ninja has always been able to fill that role prior to the level cap raise beyond 75. I hope my guide will provide a proper mentality in playing it right, I plan to briefly cover some technical elements of game stats such as enmity and haste. 
Within each section I will include gear you should care about that was important to each level range and a note of things you should have learned about the job if you had leveled old style and spent thoughtful time through them. This guide is meant for those who want to take the job seriously and have a good basis to start with.
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If by some really small chance that you are a brand new player to FFXI, this is where you start once you get your character a support job.
Elder Memories or The Old Lady
And once your character has a Main Job to 30...
Ayame and Kaede
For your first 10 levels it's straight forward. Buy any katana, go hit stuff. When you get to level 10, you get Dual Wield, if it isn't clear, it means you get to put a second katana on. 
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Yay, you get to use two weapons! Boo, it's pretty slow. You should be subbing WAR. Level 12 comes around you should have Utsusemi: Ichi. Go quest it, buy it, do whatever it takes to get this spell. You should not reach level 12 without it ready. You get Tonko: Ichi at level 9 and Ichi elemental spells at level 15. Don't worry so much about casting nukes for damage so much as casting them for skilling up, Ninjutsu skill is very important to keep capped because higher skill gives higher chance of not being interrupted from taking a hit, it won't play a big role during these levels but at much higher levels you'll definitely see a difference. And obviously you could hold off skilling up until later especially if you burned through your levels and get up to Ni spells, but we're assuming here that you want to get the full old school leveling experience without actually having to do it. Accuracy will be a pretty big issue throughout most of the levels. For low levels you might want to consider using Jack-o-lanterns.
==Equip Notes==
* Pick any 2 katanas you can wear, it really doesn't matter.
* Leaping/Bounding Boots
* Get a STR +2 ring and a DEX +2 ring. You don't have to worry about gear swapping just yet. 
* Fill in other spots for defense, evasion or HP if you can't find equipment that gives an offensive stat.
==What you should learn from these levels==
* Start counting those shadows that you lose in the chat log. The shadows remaining icon makes things much easier than when I was leveling NIN, its a lost art but try doing it anyway. Utsusemi: Ichi gives you 3 shadows that absorb single hits: meaning it's a hit a healer does not have to heal you for.
* Shadows are your main source of defense, but Utsusemi: Ichi takes 4 seconds to finish casting, 30 seconds for cooldown and reapplies over remaining shadows. If you start casting Utsusemi when you have 1 shadow remaining, you will be fairly safe in being able to reapply a fresh 3 without taking a hit.
* Start using that Provoke. Face it, you're going to tank. At these levels you should start getting the hang of keeping the mobs attention on you. Party members won't be doing more damage than the amount of enmity provoke generates, so when a mob turns to attack someone else, provoke. 
* If you're dual tanking, be mindful of the other person's HP, provoke if he's in danger. If the other tank is another Ninja, start learning to count other peoples shadows, voke if he loses 3.
* If you have been keeping your katana skill capped, you should have Blade: Retsu at level 9. The additional effect is Paralysis which makes a mob skip an attack round, giving you more time for Utsusemi counters to cooldown. Debuffs are very important to avoiding damage. 
* Always try to keep 3 shadows up at all times. And pay attention to the order you do things. (e.g. if you're going to use a weaponskill or provoke, have shadows up before)
* Start paying attention to the mobs attack animation and timing the start of your casting. There's a rhythm to their attacks and if you can start casting shadows a split second before the mob begins its attack swing your casting will finish before it starts its next attack.
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These are the levels where you start trying out evasion. With Beetle +1 gear available at 21 and an Empress/Emperor hairpin at 24. It's the same ideas to pay attention to during the previous levels because you don't get Utsusemi: Ni until a little bit later. These levels where you really start seeing debuffs play into your game. When I leveled through these levels I had to deal with Mandragoras. It was frustrating because they were MNKs and attacked twice. I honestly hated playing NIN because it seemed like Utsusemi was really a waste of gil every time I casted it. 
==Equip notes==
*Emperor/Empress Hairpin
*Spike Necklace, Beetle Earrings, Harness, the usual fare throughout these levels
*Fill in equipment slots with evasion or defense where there's no attack or other offensive stats available
*Keep looking for katanas with high base damage for your main hand and a kunai type katana for your offhand with lower delay. 
==What you should learn from these levels==
* Hojo: Ichi (Lv.23) and Kurayami: Ichi (Lv.19): This is why you wanted to keep your Ninjutsu skill close to your level. Hojo is slow, Kurayami is blind. Couple those with Blade: Retsu and you have the 3 main enfeebles that will help you keep shadows up. 
* You can definitely start equipping your NIN for evasion at this point, while evasion during these levels are relatively low in comparison to what you'll be doing at high level, you'll start getting an idea of why evasion is important. You may have some situations where you'll have 2 shadows up and Utsusemi: Ichi is already ready to use if you already didn't have those situations come up in earlier levels.
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This is where you really start seeing the job for what it really is. You start having access to equipment with stats valuable and longstanding to high levels. You get Utsusemi: Ni and that spell completely changes the feel of NIN. Back when the level cap was 75. This was the de facto subjob for most Melee and even some Mage jobs, simply for being able to use Utsusemi: Ni. Back before jobs were updated and level cap was lifted from 75 this was the only way any job had access to Dual Wield if Ninja wasn't their main job. Nowadays, it is subbed only to have Utsusemi. Ni Spells only take 1.5 seconds to finish casting and a 45 second cooldown and the beauty of it is that as a NIN main you get 4 shadows while as a sub job you only get 3. Damage from weaponskills start putting out decent numbers and you really get to start using quite possibly the best mission reward in the game. And you start getting your first piece of haste gear. Jubaku: Ichi becomes available but suffers from the 4 second casting that all Ichi spells have. THF gets Sneak Attack/Trick Attack which will help you out with hate if done properly. 
==Equip notes==
*Ochuido's/Ochimusha Kote
*Horomusha Kote
*Peacock Charm/Amulet
*Nanban Kariginu
*Fuma/Sarutobi Kyahan
*Rajas Ring
**Level restrictions on Chains of Promathia missions were removed. If you do not have them done, do yourself a favor and get them done. The rewards from that expansion are the most fulfilling, hands down. If you have friends or any other job at a high level there should be no excuse for not having this expansion completed. Your Rajas ring will be the only ring you will ever need for anything. Until you start doing really complex equipment macro changing you won't have any reason to take this ring off. 
==What you should learn from these levels==
*Ni finishes casting significantly faster than Ichi. 
*Utsusemi: Ni overwrites remaining any remaining shadows, either cast from Ichi or Ni. However casting Ichi will not overwrite any remaining shadows cast from Ni. 
*Ni Shadow canceling: You can manually remove shadows by selecting the buff from the status bar and clicking it off.
**You do this to strategically cast Utsusemi: Ichi while you have one remaining shadow from Ni.
**While casting Ichi on a last remaining Ni shadow, canceling the shadow around 50% on the casting bar will ensure that you still have shadows up but allows you to finish casting Ichi and receive a new set of shadow images. 
**This is why learning how to count shadows was important when you first learned Utsusemi; being aware of how many shadows you have left will really help with knowing which Utsusemi spell to cast and when. 
*At these levels you really start seeing good damage come out your weaponskills and should start experimenting with using accuracy % food (i.e Sole Sushi). 
*With higher output on weaponskills you should start to notice that they also will help keep a mobs attention. 
*Through these levels, key things that you have to consider about your party is that WHMs get erase, and RDMs get dispel. If a mob, like bats or lizards, puts evasion down on you, make sure that your WHM erases that off you. Slow needs to be erased immediately as well too. 
*Depending on how well geared you are, you can keep an eye out for opportune times to weaponskill for hate, like after you see Dia cast for more damage and still have the option to provoke for hate. 
*Having both Utsusemi: Ichi and Ni available will give you a taste of being untouched from having a good cycle and rhythm of shadow casting going. 
*These are the levels where SAMs get meditate, RNGs get barrage and DRKs get Souleater, they all will make it very difficult to hold hate. 
*Blade: Retsu is still arguably your best available weaponskill and will be until you get Blade: Jin.
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Here we go, the Elemental Ni Wheel. These are the first time where I saw I could cement hate on myself and keep it on me, regardless of what jobs I had in my party and how well they were geared. This is also the level range where WHMs get haste (and RDMs a little bit later). You will come to love this being cast on you, and when you get higher, you will want to have more of it. Stating the obvious, haste increases your attack speed. But it also lowers recast timers on magic spells, which is defensively why it's so important. At Lv. 39 you will get your first piece of haste equipment. Recent updates have given another very viable option at Lv. 44. Kurayami: Ni and Hojo: Ni become available and will prove to be excellent uses of Ninjutsu enfeebling due to its very fast casting time. These levels will also start showing importance of equipment with enmity on them. Artifact Weapon quests start here, use these katanas, they're very good katanas for their level. And while I didn't have it available when I leveled NIN, Yonin really tips the scales in your favor for holding hate, but necessitates the need to use accuracy % food. I started using Dorado Sushi exclusively for when I needed to tank from this point. 
==Equip notes==
*Headlong Belt
*High Breath Mantle
*Jujitsu Gi
*Voyager Sallet
==What you should learn from these levels==
*This is really the only time it really shines, but use the Ni elemental wheel to deal damage. 
**Suiton (Water) > Raiton (Thunder) > Doton (Earth) > Huton (Wind) > Hyoton (Ice) > Katon (Fire)
*Learn to cast a Ni spell in between hits in the order listed above. At these levels the damage output from cycling through these spells will deal more damage than your katanas -- (this is speaking before Ninjutsu skill was updated, so damage is greater now than when I first leveled Ninja).
*You can get TP and deal damage from swings in between elemental casting. If any problems with holding hate actually come up, you can focus mainly on getting through all 6 elements on the wheel to the point where you are waiting on all 6 to cool down and have auto-attack build enough TP to have Blade: Retsu ready. 
*The High Breath Mantle cannot be taken off if you want to receive its enchantment. So it must be left on. 
*The elemental Ni wheel can be cycled faster than most two handers and dual wielders can auto attack. This is one of the reasons why, during these levels when there isn't a lot of haste gear available, the elemental wheel works so well; just eyeballing it, you can get around 2-3 spells cast before a DRG with a lance can swing once.
*Hojo and Kurayami are also used well for enmity generation as they are not dependent on the damage you deal. 
*A select few jobs start to get defined through these levels as well, SAM gets Sekkanoki, which allows them to hold TP and perform 2 weaponskills back to back and create a skillchain. 
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Ahh, here we go. It's starting to look a bit like end game. Gear swaps, start doing them now. Artifact Armor quests start here. Take the time to quest these, good upgrade options are available later for this set. Swift belt becomes available, you first Dual Wield enhancement from equipment, clear cut evasion and weaponskill bodies. Your NIN will probably start swinging significantly faster if you are hasted and you're geared for attack speed. 
==Equip notes==
*Ninja Chainmail
*Swift Belt
*Haubergeon/Haubergeon +1
*Scorpion Harness/Scorpion Harness +1
*Nokizaru Gi
*Nokizaru Hakama
==What you should learn from these levels==
*DRG and SAM may end up giving you a very hard time through these levels. DRG gets Penta Thrust at 49 and SAM gets it at 51. Not to mention SAM also gets access to Soboro Sukehiro at 50 and RNG gets Sidewinder at 55. 
*Elemental Ni Wheel may still be viable but, you definitely will struggle in holding hate. Retsu will start to show its age but is still a very good weaponskill to use for its additional paralyze effect. 
*Equipment macro swapping becomes very important here. Swift belt has -4 attack on it. Ninja Chainmail has nothing but VIT and Dual Wield, and if you're still using Emp. Hairpin for evasion that does nothing for your weaponskill damage, you should have been starting to macro that out during the 40s, but really that wasn't all that important because of the Ni Wheel. 
*Macro in haste gear for Utsusemi, having it equipped when you finish casting will give you a pretty nice reduction in recast time. Coupled with being hasted from your mages, you'll start to see Utsusemi: Ni ready to use almost as fast as Ichi is without haste gear. 
*Around these levels you may start seeing provoke do almost nothing for keeping mobs' attention. Try to use tricks that worked during the 40s. You should start having a DD mindset, at times I found that kept hate fairly well just trying to compete on damage with the rest of the DDs in my party. Remember that you have many options available for generating hate. (Kurayami, Hojo, Jubaku, Weaponskill, Provoke, Berserk + WS, Yonin)
*Find pieces of equipment that truly benefit katana weaponskills (Most are modified by both STR and DEX), Swift belt doesn't do much, so swapping out to a Life Belt (this is what I used back in the day for lack of foresight of better options, but you be the judge), a Vangaurd Belt or a Swordbelt(+1). The same applies to Ninja Chainmail and Haubergeon (+1). 
*Starting at Lv. 50 NIN will start benefiting from WAR subjob even more with the Double attack trait. 
*Start equip swapping the Ninja Hatsuburi to help land enfeebles. 
*Start loving night time hours (18:00-06:00) because a lot of Ninja and Koga Equipment have stats that are only active at night. At these levels Ninja Hakama gives a pretty large boost to evasion even its only at night. Ninja Kyahan gives movement speed at night.
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Hey hey, Blade: Jin. This weaponskill is your bread and butter, its the thing you'll be using almost forever and has the most damage potential. These levels have Arhat's Gi set. The +1 versions of the head and body are things you want to invest in for the physical damage reduction stat. Other pieces such as legs and hands you'll want to consider for Emnity pieces. In terms of gear, there isn't much change from the things you were using in the previous levels. These levels there's a lull for notable gear. Chivalrous Chain and Potent Belt is something to consider for weaponskills. 
==Equip notes==
*Arhat's Gi +1
*Arhat's Jinpachi +1
*Fire Bomblet
==What you should learn from these levels==
*Blade: Jin can be used when provoke isn't ready.
*Blade: Jin is great for damage.
*You should start comparing your damage to other DDs. DRKs get Guillotine at 60. Any DD that is subbed SAM gets access to Meditate. SAM gets its first of the big 3; Tachi: Yukikaze. BLUs get 2 of their first 3 big damage physical spells in Frenetic Rip and Hysteric Barrage. The better you're geared for weaponskills, the better you'll hold hate when any of those DDs knock off a large chunk of HP from the mob. 
**You may start seeing other strong DDs hit quardruple digit numbers, while at best, Blade: Jin's range in damage will be around 500-800 (Going off memory, these numbers are definitely not exact). The simplest way of understanding damage for hate is comparing numbers to others; overlooking any other action (Provoke, auto-attack, etc) if you deal more damage than someone else you'll have the mobs attention, if a DD deals more damage than you, then that person will have the mobs attention.
**That being said and without having to get into the complexities of Volatile and Cumulative Enmity and enmity calculation, Provoke itself is comparable to dealing 1800 points of damage without any adjustments from equipment, Yonin, or merits. 
*Blade: Ten is decent for damage, but Jin is what you want to be using.
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Almost there. NIN gets its last bits of attack speed equipment, Relic armor becomes available. Limbus upgrades should be considered. Sky, Sea, Assault gear. These are the levels Ninja really comes together; where people start arguing about what to do, how to play, what gear is "best". Even though nowadays the gear you use(d) during these levels is more or less obsolete, its fairly important to look at everything and understand why certain pieces of gear were used. 
==Equip notes==
*Suppanomimi
*Brutal Earring
*Koga Tekko
*Koga Chainmail
*Byakko's Haidate
*Walahra Turban
*Dusk Gloves +1
*Warwolf Belt
*Senjuinrikio
*Perdu Blade
*Fuma Sune-Ate
*Cerberus Mantle +1
*Yasha Samue Set
*Loquacious Earring
==What you should learn from these levels==
*Attack speed is your best friend. Wherever you can get haste gear, slap that on. That specifically means put time into Sky and kill Byakko for his pants. If you haven't done so, go build up some fomor hate in the Sacrarium and get yourself a Fomor Codex to get a Swift belt, of if you're lucky enough to have a Speed/Velocious Belt, have that in your waist slot. Get yourself 1000 Imperial bronze pieces and get yourself a turbo turban. Buy Dusk Gloves, Fuma Sune-ate. Do Divine Might for a Suppanomimi. Save up 75 Ancient Beastcoins for a Brutal Earring.
**Attack speed is really where NIN is a contender with damage. If you were lucky and had Dusk +1 and a 6% Haste Belt when they were expensive/hard to get you would be sitting on 22% haste from gear. But lets assume that you were the average player and had NQ and only a swift belt so 20% haste, that equals out to about 3 second delay in between attack rounds when you factor in the Dual Wield enhancement from level IV job trait(30%), AF Body (5%) and Suppanomimi (5%) -- Total of 40% delay reduction that is independent of haste). The haste spell shaves off almost one full second off your attack round in this setup.
**Double attack starts playing into your attack speed as well. The animation from a second hit on any hand will play into how it looks while you're swinging for TP, to the point where you'll start seeing non-stop attack rounds.
*You'll start seeing your own damage break four digit numbers from here. Blade: Jin is modified by STR and DEX. When gearing weaponskills there's a lot to consider: You need STR and attack to hit harder, and DEX and accuracy to make sure all 3 hits land and still have to consider using DEX because Jin is a weaponskill that crits, so more DEX will help with not the stat modifier, but also crit damage. When Blade: Jin crits is when you'll see the biggest numbers. 
*Notice up until this point, I haven't specifically pointed out any katanas you should be using. You basically looked for any katana with good base damage. Senjuinrikio was the best katana available for Ninjas for a very long time, even shortly after Trial of the Magians was introduced. This was THE katana you should have been main handing. 38 base damage (There were only a few katanas with higher base damage and one of those was a Kikoku) and the 6% Critical hit rate really put this weapon on top, particularly if you used Blade: Jin. Perdu Blade was a great offhand because of its low delay, decent base damage, and its hidden effects of 10 attack and 5 accuracy.
*20% haste from gear gives a 35 second recast without haste and 28 second recast with haste.
*With a solid understanding of the relation between damage dealt (from party/alliance members) and enmity you should start being able to not have to rely on provoke to hold the mobs attention. Whereas during lower levels was your best form of enmity spiking, at higher levels you can start strategically planning out its use. 
Working example
*Mob is pulled by another party member
*Kurayami/Hojo: (To get on the hate list)
*Yonin (Small amount of enmity for using the JA)
*Auto-attacking and dealing damage (Until someone else takes hate)
*Provoke (with ~+30 enmity from Yonin)
VS. 
*Mob is pulled by another party member
*Yonin (Without any action from you on the mob)
*Provoke (First action on the mob)
*Kurayami/Hojo (to debuff and build up enmity)
*Auto-attack
In both examples we have the same actions, but the order things are done will provide better options for maintaining hate throughout a fight. In the second example provoke is used almost immediately and is already on a 30 sec cooldown, while in the first example it is ready to be used as the situation calls for it. And since I threw in the use of Yonin, its important to know when to use the ability, not just by having it up full time as the enmity bonus does decay and you lose accuracy.
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Not much will change beyond Level 75. Aim to max out your haste. Finish Abyssea, get yourself all the associated Abyssea Gear. A lot of haste gear is easily obtainable with some work. Nothing like camping King Arthro, Sandworm or spending 99 Kindred seals. The Empyrean Armor set is very useful, and replaces almost all the old 75 cap gear that NINs used for so long. And assuming that one decided to have 8/8 Katana merits. Those are the ones that really affect the job. The job specific merits don't really have much bearing on how the job is played. So its really player's choice to do whatever he or she wants. Decide on if you want to undertake an Empyrean weapon trial, whether you want to do the full Empyrean or do the marginally easier Walk of Echoes path. But I must stress this: A Kannagi does not make a good Ninja or fixes the fundamentals you skip out on from burning your job from 30 to 99. I firmly believe that you could do reasonably well without a Kannagi or the Empyrean weaponskill. That being said, a Kannagi is absolutely worth making. 
==Equip notes==
*Iga Garb +2 Set
*Loki's Kaftan
*Twilight Belt
*Atheling Mantle
*Epona's Ring
*Qirmiz Tathlum
*Ocelot Trousers
*Hochomasamune
*Kamome
*Magoraga Beads
==What you should learn from these levels==
*The enmity cap starts becoming a very important factor once you get to these levels, especially if you are aiming to tank. Once players start reaching the hate cap. 
*For all intents and purposes Enmity works like this: A decaying over time portion (Volatile Enmity: VE) and a Non-decaying portion (Cumulative Enmity: CE) both numbers added up constitutes Total Enmity. Each caps at 10,000 points and totals up to 20,000 for its total cap. 
*For many situations many other DDs cap enmity just as well as you do as NIN just on damage alone. The way you stay on top is to stay constantly attacking, which is why attack speed is so important; the more attacks you land the more enmity you are perpetually generating. 
*A good place to understand about hate would be here and the external links at the bottom of the page.
==High Level Gear and End Game==
===Limbus===
Now people start wondering whats the best gear for each situation. Personally I've always geared to prioritize Haste, Double Attack, and then Dual Wield. Ninja Chainmail is something I stick to despite newer gear for TPing. Limbus is an event worth doing to upgrade Artifacts to +1, now that the level cap is above 75, running zones to farm for +1 ingredients is very easy. SW Apollyon on the third floor with the mimics tends to put out an Ebony Lacquer and Temenos - Northern Tower on the 2nd Floor with Gigas has a high chance of putting out a Plaited Cord. The best upgrades are Ninja Tekko +1, Ninja Kyahan +1 and Ninja Chainmail +1, although the Body +1 doesn't give anything extra other than a few more VIT, 5 DEX and Shock Spikes. Doing Limbus also rewards out with Ancient Beastcoins to purchase a Brutal Earring, a Boxer's Mantle, and a Loquacious Earring but you can always shop around local bazaars if you're not patient enough to sit through a few runs.
===Salvage===
Salvage itself has been a notoriously difficult event to get gear from, particularly the Lv. 35 Armor pieces. The one piece to take note of from this event is Usukane Sune-Ate. This one piece used to give the most enmity a Ninja can have in this slot, still doubles over as a great weaponskill piece and has a little bit of haste to boot. Usukane Haramaki is a great evasion piece but there's other comparable options here, wearing this piece is basically a trophy piece as Salvage bodies take a bit more work to obtain. However, by no means is Salvage gear absolutely necessary to have to effectively do what you need to. Aurore doublet (as horrendously bad looking as it is) is quite a decent evasion piece, as is the classic Scorpion Harness. The real purpose of Salvage equipment nowadays is really to simplify your equipment swaps and inventory.
===Sky===
Byakko's Haidate and Seiryu's Kote if you plan on getting Blade: Hi. You can augment Byakko's pants with critical damage up to 4% and AGI up to 6. Seiryu's Kote can be augmented with critical rate up to 3% and some odd DEX. Make friends with a Synergist.
Augments aside, Byakko's Haidate was the reason most people NIN, SAM, MNK, and WAR were doing sky back in the day. Even today it still holds its own as a great all around piece. 15 DEX on the legs on top of 5% Haste compares well to the newly added Haste legs from abyssea. As it applies to NIN, you could both TP and WS in this piece. This piece of gear, along with Suppanomimi made me start taking my NIN seriously. It may have been outdated prior to the Synergy Augments, but with the addition of a potential Critical Hit Damage on them, not only does it shoot back up to the best piece for WS for Blade: Jin and Blade: Hi, but it also puts it back up as a great TP piece again as you can still cap out Haste losing 2% on the legs from Iga Hakama +2.
===Sea===
I'll be honest here, I hated Sea. The drop rates seemed as abysmal as Salvage, and you had to put seemingly more work into getting a Torque for your job than it was really worth. A handful of mobs had TP moves that ignored shadows completely (Sickle Slash, I'm looking at you), and others had AoE Stun that made shadows completely pointless. But the abysmally low drop rate translated into a number of shady Linkshells on my server and back at 75 it seemed nigh impossible to actually walk away with an actual reward from the event. Ranting aside, a Hope Torque seems tailor made for Blade: Hi. The Katana Skill on it translates directly into accuracy and attack which is needed for said Weaponskill with 4.0 TP modifier (mmm, Quadruple damage). Not only that, Blade: Hi is modified by AGI by 60%. In my own testing specifically for Blade: Hi, Hope Torque puts out noticeably more damage than a latent effect gorget. Gorgets themselves are worth making for Blade: Jin and anything else you feel the need to use constantly. Although Yovra Organs are no longer limited to Al'Taieu. Ovni drops Yovra Organs, repops every 10-20 minutes, doesn't charm, and is in Abyssea. The other Organs you still need to farm in Al'Taieu though.
===Abyssea===
Abyssea undoubtedly allowed Ninjas to really shine. As an event it introduced a system of weakness triggering on all notorious monsters, Atmas that can be selected to customize bonuses to how you want to play, and ridiculously inflated stats that basically makes all end game events before it moot. In many cases Atmas make quick fixes to the lack of proper gear people used to strive to get and can basically skip over now due to the introduction of Empyrean armor upgrading. Depending on how you look at it, Abyssea makes things a lot more accessible to the casual player. If you're looking at today's FFXI though, this is where you want to be focusing your attention. Despite all the associated gear being easy to get, it is hands down the best gear you would be looking for to play NIN right as of the level 90 cap. Abyssea offers all the gear you could ever want for specific builds. 
The Tier III VNM in Abyssea - Tahrongi drops Ocelot Trousers which can be used in an evasion build as well as an enmity piece.
Turul in Abyssea - Konshstat drops Loki's Kaftan that works great for your crit weaponskills like Blade: Jin should you choose to aim to power up your critical hit damage. 
Ocelot Gloves gives you haste hands that have emnity and DEX on them, something Dusk Gloves could never give you without some luck in gear augmenting, and never of these values.
Tired of having to buy new STR rings every time there's a level cap increase? Then Epona's ring is the answer to that. 
Were you silly and picked a Knight's Earring or a Bushinomimi from Divine Might? Iga Mimikazari should hold you off until you go back and pick the right earring. Couldn't do Salvage for Usukane Haramaki? Here's Iga Ningi +2 for you. Don't want to pay money for a Speed Belt? Here's a Twilight Belt. Don't have your Zilart missions done to do Sky? Here's 7% Haste on Iga Hakama +2. 
====Atma====
Atma's are really up to how you want to play. I honestly don't have a definitive answer to what you should be using, but I will list the atmas I use for reference, why I use them and other options you could consider. 
My Set
*Atma of the Razed Ruins - You should ALWAYS have this atma on. Couple this with cruor buffs and you will almost never have accuracy problems in Abyssea. It also boosts up your critical hit rate and damage by 30% which is enough to see A LOT of strong critical hits per attack round. 
*Atma of the Apocalypse - Triple attack adds more hits to your attack round which will make it look like it's speeding you up. Auto-reraise is nice especially now that you can strategically use Mijin Gakure to remove weakness. Quick cast can often be a lifesaver when things strip shadows repeatedly. 
*Atma of the Gnarled Horn - This is something I came across when I had my Kannagi made. The considered this atma because of the 50 AGI you get, but once I started getting used to having an Empyrean Aftermath, having a higher critical hit rate became much more important. 
Other Atmas
*Atma of the Voracious Violet - This gives a bit of a boost to your double attack rate, as well as regain so that you'll have TP ready to weaponskill sooner. 
*Atma of the Sanguine Scythe - Has a nice HP% boost which is always nice to have in Abyssea since WHMs can mega cure the bejeezus out of you, but its bonus to damage is in its 30% critical hit damage which paired with razed ruins can give you a lot of damage potential out of Blade: Jin
==
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More to come as I think of things.
==NIN/DRK==
NIN can fill important roles in end game. Back at 75, Kirin, Proto-Omega, Proto-Ultima, I was able to fill roles traditionally meant for PLDs. DRK as a support job becomes something very interesting to try out, because it opens the option up of not having to deal damage to hold hate. Stun is the approximate equivalent to PLDs Flash, and Aspir and Absorb-TP (Formerly Sleep) can generate sizable amounts of non-decay enmity as well as your Ninjutsu enfeebles (which don't have to land to generate hate). The only downside is you will need proper support to make it work; that means refresh, and haste. And it goes without saying you need to gear it properly -- with a focus on haste then enmity to make sure each of your enmity spells are ready to use as soon as possible. This sub is still a good sub, albeit a little obsolete with the zerg style fights that Voidwatch has introduced. The only reason I would recommend any serious Ninja to get familiar with this job combination is because personally, it taught me loads about enmity and being able to generate hate on a mob without damage, while doing whatever you can to maintain survivability.
===Finding Gear for NIN/DRK===
The right equipment you should be looking for should be prioritized by Haste, Fast Cast, then enmity. The better you can cap haste, the more frequent you can use spells to build up hate. If you can find equipment that doubles up on stats you need, those would be the most ideal pieces. NIN has several options starting from 75 for haste gear. By the time you hit 90 there's a handful of items that give at least 4-6% or more haste in all the visible equipment slots as well as some "hybrid" pieces. 
High Haste Gear
*Iga Zukin +2
*Zelus Tiara
*Twilight Belt
*Iga Hakama +2
*Koga Tekko +2
*Iga Kyahan +2
Haste + Enmity/Fast Cast Gear
*Ocelot Gloves
*Goading Belt
*Ocelot Trousers
*Usukane Sune-Ate
*Mirke Wardecors with Enmity and Fast Cast Augments
*Loquacious Earring
Enmity Gear
*Invidia Torque
*Odium Ring
*Mermaid's Ring
*Cerberus Mantle +1
*Nokizaru Shuriken
*Trance Belt
*Shark Strap for when you don't need to be engaged and not using your katanas.
===How To===
NIN/DRK is much like playing PLD. If you've played PLD before then you'll understand the idea of holding hate without damage. Familiarize yourself with Enmity values to each Job Ability and Spell. The difference between PLD and NIN/DRK becomes very clear on long fights as NIN/DRK gets more options to spells with non-decaying enmity, particularly Aspir and Absorb-TP. Both of these spells take a considerably long time to cast, especially in comparison to Stun but all three of these spells have an element of non-decay enmity that should be cast repeatedly throughout the fight. I'll provide some specific examples of how I used NIN/DRK back at Level 75. Most of these strategies are obsolete now, but knowing how to do it becomes invaluable in knowing specific ways to play the job.
Kirin/Proto-Omega
*Kirin and Proto-Omega use to be kited fights, usually done by PLDs because they were the symbol of hate holding and survivability. Kirin casts Stone V, Quake, and Stonega IV and runs REALLY fast. His basic attacks are virtually all TP moves that cause Bind, Choke, and Rasp. What you had to do to stay alive was keep shadows up and run like hell. Stonega IV formerly was a devastating spell and there was no way to block it other than running away, and Kirin had a very high resistance to Stun being an earth based NM. But kiting involves a lot more than just running away from something and just keeping your shadows up. You need to maintain a high level of hate so that your DDs and Casters can do their jobs and not be the target of its attacks. Single target spells such as Stone V and Quake provided opportunities to cast multiple spells in succession while not having to worry about taking a high damage spell to the face. Quake in particular let me cast Aspir, Sleep (The spell Sleep used to have the VE and CE values of Absorb-TP), Hojo/Kurayami: Ni and still have time to throw out the nearly instant cast Stun and have some distance from Kirin. Stun itself is probably the most important spell to use because it is the DRK equivalent to Flash. Having a Haste setup ensures that Stun is ready to use faster than Provoke. Kited NMs that are easily stunned like Proto-Omega allow for breathing room to cast Utsusemi: Ni when you stun them. As long as you aren't hit by massive hate reset moves like Colossal Blow or killed while Kiting holding hate without dealing damage becomes a easy routine.
Proto-Ultima
*Proto-Ultima is a good example of a NM that does not move and NIN/DRK becomes a more than suitable replacement for a PLD. When I tanked Proto-Ultima I chose not to use my Katanas as I had my Limbus group damage him in a controlled manner. Oftentimes when I did use my katanas he would ready TP moves much more frequently and have more than 2 shadows wiped from me as well as the DDs I had come in to weaponskill. Yes, you can and I have used my katanas on Proto-Ultima, but for the purposes of this example I used a staff so damage is not a factor in holding hate. The idea is the same but Stun becomes an important spell because many Sea NMs are easily stunned, even from a DRK sub. Proto-Ultima has an ability that puts both Slow and Elegy on you, which need to be erased by your support immediately. While fully buffed with Marches, Haste, and refresh, you should be able to be as busy as if you were using your katanas. That means keeping a full routine of Stun, Aspir, Sleep(Absorb-TP), Kurayami/Hojo/Jubaku. If you're ever at the point where you have nothing but cooldowns, you can spam Poison for 5mp and 1 sec recast. As long as you're constantly taking action most of your DDs and Casters can do their job worry free. And should the situation arise that someone rips hate off you or you're hit with a hate reset move you can always use Souleater or Last Resort to spike up hate. 
==Gear Selection==
*I loved Koga Tekko. It was 4% haste at night hours when I couldn't afford Dusk +1 which was something like 18mil at the time. +1 gave me 2 more game hours to keep them on. It was entirely a hassle to have to carry around 2 sets of haste gloves, but it was worth it to me having as much haste as I could possibly have at the time. Once I got Dusk Gloves +1, I didn't have to worry about having less haste in my Utsusemi macros during the daytime. 
**Do yourself a favor and pick up some Forbidden Touches out of Dynamis-Valkurm. You need 30 if you have a +1 and 50 if you have an NQ Koga Tekko. Koga Tekko +2 removes the nightime/dusk-dawn restriction on the stats. This will simplify your hands slot with a WS and TP piece in one. 
**If Usukane Sune-Ate are out of your reach. Koga Kyahan +2 are quite possibly everything you'd want in a WS piece for NIN. STR and DEX +7 for Jin, Ten, Shun, Ku and AGI +9 for Blade: Hi if you have it rounded off with a nice 4 enmity.
*Rewards for A Crystalline Prophecy and A Moogle Kupo d'Etat were geared specifically for how I played NIN. 
**Anwig Salade has STR +4 and Weaponskill accuracy +15 & DEX +4 and Critical Hit Damage +2%
***If you don't have as much faith as I do in the Anwig Salade with the augments I picked out, Aias Bonnet is a great choice for the head slot.
**Mirke Wardcors I augmented with Fast Cast +5 and Enmity +5, stats a PLD would choose for a Nuevo Coselete.
***Fast Cast becomes important in casting shadows. Which is why I listed the Loquacious Earring earlier. In this setup I finish casting shadows at around 60% instead of the usual 75%, this isn't a precise number but it will give you an idea of why fast cast gear is important.
***The trick is to have all your fast cast gear equipped before you start casting and all your haste gear on when you finish casting; So in this specific setup you will finish casting in the 60% range and still have the recast low as 28 seconds with your 20% haste setup and the spell cast on you.
*Peacock Charm served me well from 33 all the way to 85 when I went out and got myself an Iga Erimaki. It was an easy choice to lose 3 accuracy to gain Critical hit damage and evasion. 
*Ocelot Trousers is a great piece. It provides a single piece with a decent amount of haste, a high enmity value and 10 evasion that's really hard to find elsewhere that would be available for NIN throughout the entire Vana'diel day. 
*When Trial of the Magians was introduced I started working on a high base damage weapon: the Mozu not knowing it would eventually turn into the Empyrean Weapon. This would prove the popular choice, which if you look at the lack of options in good katanas prior to 75 cap removal and looking at the Vana'diel census for 2011 as the reason why there are so many Kannagis around.
*I focused on STR first, attack second for weaponskills for these levels, using Byakko's Haidate to WS usually kept my DEX close to my STR. In terms of WS bodies in my order of preference, it was: Haubergeon < Koga Chainmail < Haubergeon +1 and eventually Iga Ningi +1/+2.
*STR rings are important until you get an Epona's Ring. Afterwards, you just treat it like your Brutal Earring and never take it off.
*Seek out gear that has both STR and DEX and/or ATK and ACC.
*I prefer to TP in the Artifact Body. While the Empyrean body piece is great piece to use for both TP and WS, its drawback is its augment to Migawari (See below). Ninja naturally gets Dual Wield 5, which lowers the actual delay on your weapons by 35% and adversely affects your TP per hit. Add in Iga Zukin +2, Suppanomimi, and Ninja Chainmail brings up that weapon delay down to 50% and you gain 4.5tp per hit. Any more Dual Wield enhancements (Koga Hakama, Nusku's Sash) would lower your tp gain even further.
**Koga Chainmail +2 is reportedly only 3% Dual Wield. So TP bodies are really player's choice as to which they prefer. Koga Chainmail +2 is good if you don't have Katana skill meritted. Iga Ningi +2 is still a very solid choice. But I still prefer Ninja Chainmail (here's hoping to +2 artifact, eh?)
*The set bonus is a disappointing additional attack in your offhand weapon, no bonus to damage whatsoever so you should never use all 5 pieces of the set at once. Iga Tekko +2 is best used for Ninjutsu damage and Evasion.
*Trial of the Magians provides a very wide selection of utility katanas; particularly the evasion path, make two of these. You may not ever actually need to use both but two AGI Arisuis give you a lot of Evasion.
**For well rounded choice selection, I have 2 VIT(Pdt) Arisuis, 2 AGI(Eva) Arisuis, 1 MND(Mdef) Arisui and 1 STR(Atk) Sekka +2 that I'm unwilling to spend gil on Flame Geodes for. If you have merits in Katana, I don't think you'd need any DEX(Acc) katanas unless you were really trying to max out Blade: Shun, in which case more attack would be ideal.
===Voidwatch and Nyzul Uncharted===
Welcome to Square-Enix's foray into luck based rewards. Voidwatch presents a pop NM that relies heavily on temporary items such as Physical immunity, attack/magic attack, and crit rate drinks and 300TP wings. There's weaknesses that are triggered that replenish used up temp items either by singles or the whole lot. Weaknesses randomly shuffled throughout the fight, meaning that if you don't have a job representing, you're screwed until 5 minutes have passed for players to have the option to reshuffle without having to trigger. On top of that, the rewards themselves are distributed in individual chests and if they're rare/ex, most instances you cannot share with the rest of the alliance. Drop rates are dismally low for the common playerbase and SE thinks its funny to give us items that increase the probability of a high value item to load in your chest, which most people think is placebo anyway. 
Then there's Nyzul Isle Uncharted. Quite possibly one of the most unforgiving events ever given to us. The objective is to climb floors, much like old Nyzul. Old Nyzul you could incrementally save your progress; back at 75 the idea was to exit every 5 floors to save progress. Neo Nyzul, however, wants you to climb from floor 1 to floor 100 in 30 minutes. It sounds insane doesn't it? Well luckily they're not 1 floor jumps. Typically going up floors will jump anywhere from 2 floors to 9 floors, and that is left mostly outside the group's control. Then the floor objectives can be as equally unforgiving. While simple objectives such as specified enemy or leader might be quick, more time consuming objectives will really eat away at the time you spend on a single floor. Lamp floors that require an ordered lamp activation usually spell disaster for groups, as well as large floor labyrinths with an All or Specified Enemies objective. To add on to how grueling the event is, Pathos' is significantly more common than old Nyzul, often times giving a floor objective with all, multiple enemies, 20/40/60/80/100 boss or leader with weapon skills or white magic not available for use. Floor 100 however is guaranteed at least 1 piece of armor dropping, and a redeemable voucher for any Lv100 drop to be traded at the Assault office. However daunting this event seems though, it is possible to do without cheating, I have had some luck where a run wouldn't give us any lamp objectives or just code lamp, which is how I've gotten most of my own wins. 
Enough ranting though. This is the gear you want to aim to get:
*Athos's Tabard may be the first thing you're looking for if you're a Kannagi NIN. It's basically Loki's Kaftan +1, but doesn't reportedly provide any more Crit Hit Damage, but paired with more Athos's pieces like feet, it gives more Crit rate per piece. Overall, you want to aim to get the entire set. 
*Phasmida Belt is the end all evasion belt for NIN. Make an effort to try to get lucky with Kaggen, it's 6 Haste, 6 Accuracy, and 6 Evasion. This piece has replaced my Nusku's Sash and allowed me to keep up a potential 19% haste in my evasion set prior to Relic +2 legs. 
*Toci's Harness seems to be a decent piece. When it comes down to it, this body is a very difficult to tell which comes out on top over AF3. I suppose it's personal preference, at this level you're working at the margin anyway. But for Blade: Shun - hands down, use Toci's. I'm not entirely sold on the Ocelomeh Headpiece/+1 but some people prefer having the triple attack bonus, I would prefer not to lose the Dual Wield on the Iga Zukin. Triple attack however is a good segue into the next piece of armor. 
*Porthos Byrnie - Triple Attack 2%, Haste 5%, Attack +10, HP +45. Wow this is an amazing body. Throw this on, put on Koga Hakama +2, and you've got a switch of 5% haste from Legs (Byakko's Haidate) to body and 2% more Dual Wield from body (Ninja Chainmail +1) to legs. The sacrifice would be the 20 DEX and (if augmented) 3~4 Crit hit damage. But overall you would gain : 86HP, 2% more Dual Wield, 12 Evasion, 2% Triple Attack, and 10 Attack in your TP set. And on top of that, you don't have to wear that ridiculous looking Native American getup. 
*Thaumas Coat - Double/Triple/Quadruple Attack? Oh my. This is a great piece if you can get it. It's a Neo-Nyzul drop. Arguably one of the best TP bodies in the game for any of the jobs that can wear it. Either this or Porthos is a solid choice for Ninja. I personally prefer the Porthos for the HP and 1% more haste to stay at cap, but if you're collecting gear to keep your options open, a Tiercel Necklace will make up for the 1%. I would however consider this piece over Porthos if I had a Kikoku and built a heavy attack setup around it. Tenryu Tekko +1, Tenryu Somen +1, and Tenryu Sune-Ate +1 all with augments would be my dream setup. Tekko +1 has 10Atk/Acc, 8STR/AGI, 4% Haste, 7 Subtle Blow and a potential 2-3% double attack augment. Somen +1 has 9STR/AGI, 12Atk/Acc, 10 Subtle Blow, and a potential 6-7% Haste augment. Sune-Ate +1 has 7STR/AGI 13 Atk, 8 Eva, and 8 Enmity, with a potential 3-4% haste augment. The problem is the incredibly rare Hexed -1 gear, abjurations that come from Voidwatch AND Legion, and the Legion rewards itself that give augments. This setup is currently way beyond my reach, but maybe one day. (This ended up being a bit of a tangent, but with a Lv 95[99] Kikoku, a STR Arisui, Atheling Mantle and those 3 Tenryu +1 pieces and a Qirmiz Tathlum you would have a total of 115[120] Attack in your TP setup.) Of course nothing is stopping you from doing this with a Kannagi either, this is just more of something that I would like to build if given the opportunity. 
**I retract my statement about keeping the capped haste in gear. Who gives a crap? It's 1%. the difference at 25 or 26% is .02 seconds off your next attack round if you're hasted from a spell according to FF Calc. I was just being cynical about it because it was too easy a decision by the general populace who could complete NNI. I leave my Porthos Byrnie on my SAM now. But if you still are having bad luck in Neo-Nyzul, Porthos is still a decent alternative. 
*Thaumas Hat - STR6, AGI14, Crit hit rate +4%, mab/macc/ratk +6. Holy Crap, its an augmented Seiryu's Kote you can wear on your head. Hurray for Blade: Hi. No explanation really necessary, right?
*Thaumas Nails - DEX/AGI/MND +9, ATK +14, Double Attack +3% : The Devs must really like screwing with AGI feet for NINs. First, we had Hachiryu Sune-ate with 10 AGI available to us. Then the much cheaper alternative Scopuli Nails with DEX/AGI 10, then giving us Relic +2 with STR/DEX +7 and VIT/AGI +9 with 4 Enmity, and then to Athos's Boots with DEX/AGI +10 and accuracy on top of set bonus, now this. Your real best bet would be Thaumas, but if you're space conscious Athos's Boots are a solid choice. 
*Prolix Ring and Athos's Chapeau for some extra fast cast in those slots for NIN.
==Merits==
I mentioned earlier that the best thing you could merit for NIN is katana skill so if you plan on taking it seriously the extra boost will help. Group 1 and Group 2 merits are sub-par in comparison to merits for other jobs. So really its up to the player to decide what he wants to do for specialty. I like having a big spell list so I meritted all my San Ninjutsu. Subtle Blow is a nice choice but with the introduction of Yurin and Myoshu, the benefits of spending merits there seems to have much lesser impact. I made myself a 2nd (or maybe 3rd) rate RDM and meritted into Hyoton and Raiton effect. The damage is dismissible at best, but sometimes puts out some respectable numbers considering expected elemental ninjutsu damage. A point or two in Ninja tool expertise might be amusing to do to save on tools from time to time. Sange I can't really comment on because I didn't merit it. Shuriken are expensive and rare to see on sale and generally require a whole other gear set to put together properly. I do have a whole throwing gear set but I rarely ever use because it slows me down from swinging my katanas.
===Blade: Shun===
Blade: Shun is probably the best looking katana weaponskill ever. However, it takes three merits for it to actually show any promise. At five merits it is an excellent weaponskill, and in terms of damage, its better than Blade: Jin. Its modifier is DEX, its 5 hits, and attack really helps out the damage. Not entirely necessary needed to play the job right, but is nice for completion and to have a relatively consistent, predictable, and controlled damage. Luckily, a lot of the Empyrean gear suits Blade: Shun very well. The skillchain properties are Fusion/Impaction, so Flame Gorget/Belt or Thunder Gorget/Belt (Thunder doubles over for Blade: Jin, if you're being conscious of inventory space). However, if you've got other jobs leveled that you care about, Blade: Shun probably won't be the best choice say if you needed Tachi: Shoha, Shijin Spiral, Upheaval, Last Stand, or Stardiver. If it came down to it, Blade: Shun would be the first to go if I wanted to merit another weaponskill, especially if you have Blade: Hi.
===Sange and throwing===
This merit ability (I've heard) has a lot of damage potential. So I'll include a small list of throwing gear for those who are interested. 
*War Shinobi Gi
*Ninja Tekko +1
*Hurling Belt
*Ninja Hakama
*Koga Chainmail
*Stellar Earring
==Migawari==
This spell is one of the best spells for having low physical defense, and less magic defense gear than a PLD. The effect is negating critical damage, basically it means any more that deals more damage than you have HP, the damage is annulled. (Migawari, is NOT an excuse for not having a magic defense set. Admittedly, I don't always carry mine around, but having the set ready to use is crucial for very important fights.)
My first use for Migawari was Proto-Ultima's Citadel Buster. You can see it coming, it has a countdown, and more than likely it's going to one-shot most people who aren't prepared to take the hit. Ninja on one hand, can throw up migawari and will take 0 damage from it. Iga Ningi +1 and Iga Ningi +2 make its activation at more than 85% of your HP and more than 75% respectively. Its recast without gear is 2 minutes, despite being an Ichi spell, and it only lasts 1 minute, so it's best to be used strategically. By that, I mean that using either Empyrean body would waste Migawari. Sure it might be a little bit more taxing on your healer, but if an attack wasn't meant to one-shot you, it doesn't need to be negated. This is what I believe as its most effective use. 
The best practical example would be Azdaja, and repeatedly having to face spike flail with the very real possibility of not having cruor enhancements due to its dispel. When shadows are not viable as a proper defense to an attack from this wyrm (i.e -aga 4 spells) Migawari should be used to counter its high damage casting and not used to absorb damage from its tail attacks which may deal close to 75% of your HP without cruor enhancements.
==Issekigan==
This is a great JA. It's a parry stance that gives you roughly 50% chance to parry. Unfortunately, when I got this new JA, my parry skill was close to cap for 90, so I don't know how this stance works when your parry skill is low. But as it works with high you can throw this up and be good to cast Ichi while a few mobs are wailing on you, not too many of course -- but it definitely is a great defensive ability. At the very least you can pull a bunch of mandies and use it to skill up parry. While it may be overlooked because parrying an attack is relatively rare, having it properly skilled up can save you from taking a hit while trying to get those shadows up and being interrupted.
In addition, this can be a great TP builder when you are squaring off with a fast swinging enemy (I personally like to save Issekigan for mobs that use Hundred Fists) or against multiple enemies. With Tactical Parry (which adds 1 TP per parry, +1.5 with Iga Kyahan +2) on top of the 4 you get from Tactical Parry III. The amount you gain is unaffected by "Store TP" equipment.
It also has the added bonus of giving some amount of Enmity when you parry. So be aware of where hate is and where its going to be before you use Issekigan. It would be bad if you threw up this JA and the mob isn't even looking at you.
==Kannagi==
If you do decide to undertake the trials to make an Empyrean Weapon, be ready for the things that this will entail; starting from the minor NM camping which more than likely you may find other people camping and willing to team up to the final stages of collecting the upgrade items from High level Abyssea bosses.
The trial starts with killing low level NMs progressing from 3 kills per single trial, gradually growing to 4 kills for mid level NMs and to 6 and 8 for the VNM trials. After finishing up to this point you'll have a Mozu with 44 base damage and a choice of whether to go with the full Empyrean path or the Walk of Echoes path. The Walk of Echoes path gives you the exact same weaponskill as the Kannagi and is easier to finish to level 90 and still gives you a weapon that a very high base damage, but provides no aftermath. The actual Empyrean weapon will take some time to complete. You have to collect 50 Briareus' Helms, 50 Sobek's Skins, and 75 Apademak's Horns. 
Killing Briareus is simple enough, but requires you to run around all of Abyssea - La Thiene which can be time consuming. Sobek is an easy kill as well, but camping Gukumatz is really what is going to slow you down. The addition of Gukumatz's Key Item into Gold Pyxis' is a welcome alleviation. Apademak is the one that can be a real pain. In a recent update, the drop rate on Sisyphus Fragments was adjusted so that Sisyphus will actually drop this pop item. Nevertheless, if starting from 0 horns, be ready to spend a significant amount of Gil if buying from the Auction House. Low amber lights in Abyssea - Uleguerand tend to give out a good amount of fragments (as well as Snow God Cores if you're patient. Now back when I was doing my Lv. 90 Trial for my Kannagi back at 90 or 95, my group was having a hard time with Apademak, because it was a very difficult mob. Now at 99, fighting him is significantly easier, but can be troublesome if you don't know what you're doing. I happened to have to redo this trial for my Almace, with considerably less help. The basic setup needed would be NIN, a competent healer, and a stunner, preferably BLM/SCH or SCH/BLM. Keep your mages at a distance and stun every spell you see Apadamak attempting to cast. It'll always be a high level direct damage Thunder spell, you can see it coming, has a relatively long casting time, and never builds resist from anything with natural Dark magic spell. Do this and he will not use Fulmination. Also, if you're still using Ninja Chainmail +1, find something else to use just in case he gets a lucky swipe in; I learned the hard way that the damage from shock spikes cause him to level up -- much to the dismay of my group. 
Which path should you choose? The Tobi +2 will definitely give you a weapon with higher base damage sooner than a Kannagi can be upgraded from Level 85 to Level 90. However, the aftermath sets the two weapons apart. While Blade: Hi itself is a great weaponskill, a NIN with high attack speed really excels at putting out damage even without having to weaponskill. The Empyrean path should be your choice if you are serious about your NIN. The difference in difficulty isn't that much if you can find a solid group to collaborate with and the final reward is quite possibly the best katana in the game currently available. 
Also something to consider is the path from 90 to 95 is very pricey. It requires 1500 Heavy metal plates, that sell in bazaars for 100-150k. This is a minimum of 150m if you buy them all -- also considering the current overall interest in Voidwatch. Depending on your luck with Heavy Metal pouches it's going to take a long time if you collect them from fights only. The Walk of Echoes Tobi +3 will be considerably easier to do if there's people who actively do WoE on your server, but if you're planning on buying the 100 Devious Dice there's some gil to be spent as well and it only brings up the base damage to the Lv. 90 Kannagi. 
===Gearing up for Blade: Hi===
It might be a bit redundant but crit damage gear is key here. The general consensus for gear is Loki's Kaftan or Athos's Tabard, Seiryu's Kote, Ambusher's Hose, Hachiryu Sune-Ate (If your luck in Voidwatch is good, Athos's Boots), Epona's Ring, Atheling Mantle -- Thaumas Hat is great as well. If you can get an augmented Seiryu's Kote and Byakko's Haidate, it would be ideal pieces for Blade: Hi. Weaponskill Gorgets confusingly performs less than a Hope Torque but if that isn't something reasonably available Shadow or Soil Gorget would be the way to go. AGI is the modifier so where there are no critical hit damage pieces available you should equip gear with AGI on it while taking into consideration equipment with Double attack and attack.
I've been having some luck lately; so this is the my current and (in my opinion) perfect Blade: Hi setup -- Top to bottom. 
Kannagi/Choice Offhand/-/Qirmiz Tathlum
Thaumas Hat/Hope Torque/Moonshade Earring/Brutal Earring
Athos's Tabard/Seiryu's Kote (Augmented)/Epona's Ring/Stormsoul Ring
Atheling Mantle/WS Latent Belt (Shadow or Soil)/Athos's Tights/Thaumas Nails
After all the scraps I wasted to augment my Byakko's Haidate, they get replaced, especially since I never got lucky enough to get 4% Crit. damage and it turned into a sinkhole of gil. So in this updated setup, you're actually getting progressive set bonuses of two sets. So losing Athos's Boots 1 AGI actually nets you 1 more AGI when pairing Thaumas Nails and Thaumas Hat. That's not much in itself, but you're also gaining the 14 Attack and 3% Double Attack in that tradeoff. On top of that switching Byakko's Haidate to Athos's Tights loses you 10 DEX that basically didn't matter for Blade: Hi anyway in exchange for the progressive set bonus of Crit hit rate with Athos's Tabard, and reported 4% crit hit damage (free of Byakko Scraps). 
So in total (FFXIAH doesn't properly display the stat totals):
+82 AGI (Assuming 90 Kannagi and default Kamome)
+15% Crit hit Rate (5 from Merits, 3 from 2 piece Athos set bonus, 3 from Augmented Seiryu's Kote)
24% Crit hit damage
14% Double Attack Rate (Not counting trait from /WAR)
and Latent Bonus
I could make a better effort to clean this section up, but at the very least you could see the evolution of my gear and the thoughtful consideration I put into it and if you're down on your luck you can at least see where to get started.
==Other Katanas==
If you're looking for a quick fix to a situation for katanas, magian katanas are the way to go. WS Damage 10% damage is a solid choice. Fire/STR (Atk) path is also very good and will give you a good amount of attack when it's an Arisui. Hochomasamune will shave off nearly 10% off your Utsusemi casting, so it's a great utility weapon that you could offhand that still provides 10 DEX. Oirandori is very party friendly. If you want to buy an Auction House Katana, buy a Kakesu. 
===Kikoku===
With the update to dynamis. Getting a relic weapon is much less of a task than a few years ago when you could enter only every 3 days. A Kikoku (95) will be an easier ask to do than getting a Kannagi to the same level, but it will be significantly more work, the task itself if you had all the currency has wait periods between each stage, and if you wanted to not spend anything, expect to farm Dynamis regularly. The weapon itself doesn't make its stride until Level 90 when the triple damage rate is increased approximately 20% more. The aftermath isn't overly impressive - subtle blow. But being able to paralyze without using a tool/casting is invaluable. The best part of Kikoku is the +35 Attack on the 95, and 40 on the 99. Not to mention the 60 and 64 base damage. Remember the best katanas are the ones with the highest base damage? Can't get any better than the relic. 
===Nagi===
Really not worth the effort. Sorry. If you're going to make a mythic pick another weapon. The aftermath would be great, but Kamu isn't that great for damage considering your alternatives. I can't really comment, Nagi isn't really something I would consider other than for the massive amount of Enmity the weapon has, but if it's anything like the Relic weapon, the listed stats may not be applied to your offhand. At level 90, the base damage is 1 lower than a 90 Kannagi. The augment to Mijin Gakure would be nice, but really why would you go through all this trouble for ~600-800 more HP when you get raised, you're not weakened anyway. If you want to be the ultimate completionist, you wouldn't really be disappointed with this if you made it, but for practicality there's bigger gains from other weapons and other jobs in a mythic.
= =
I will no longer be updating this guide. I'm finding it hard to keep up with FFXI of 2013 post Seekers of Adoulin. Although Ninja is one of my favorite jobs, I'm seeing very little playtime on it nor is there any use for it in any of the endgame I participate in. I wrote this guide in hopes that it could steer players in the right direction and I hope that was accomplished for at least one person. 
With the release of Katanas with 125 base damage, I would be hard pressed to advise anyone to proceed with any of the legendary weapons if they needed to keep up with the current state of the game. I'm sure in time they will up the damage rating for those weapons, but as of right now the direction I'm taking my character isn't geared towards my Ninja. I'd completed my Ryunohige, shifted from 300/1500 heavy metal plates for my Kannagi and completed my Masamune to Lv. 95 and I'm halfway through a stage 3 Yoichinoyumi as of this writing. I'm not writing this to gloat about my progress but moreso to demonstrate the gravitation towards more useful jobs in my repertoire. I will complete my Kannagi to 99 one day, but for right now, its only use is for Voidwatch (where really the only important thing is magic accuracy and physical accuracy) and Abyssea (where you really just need your proc weapons and a Lv. 85 Kannagi to be functional). 
This guide was written with that era in mind anyway. The theoretical guides posted on FFXIAH are actually more concise. And while a lot of the gear that guide suggests takes a lot of work to obtain for the average player, it is written collectively by players who understand the math much better than me and is updated with more frequency. Here is that thread for those looking for more updated information. http://www.ffxiah.com/forum/topic/33470/the-sealed-dagger-a-ninja-guide/