Kokushibo

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|-|Shichishito Blade Form=
|-|Sword Protrusion Form=
|-|Monstrous Form=
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==Summary==
 is the secondary antagonist of Kimetsu no Yaiba. He was a demon affiliated with the Twelve Kizuki, holding the highest position, . As a Kizuki, Kokushibo is one of the closest servants of the King of Demons, Muzan Kibutsuji, whose main purpose is to find the Blue Spider Lily so that Muzan can gain immunity from the sun.
Nearly five centuries ago during the Sengoku Era (the Golden Age of Demon Slayers), Kokushibo was a human by the name of , a former Demon Slayer and the older twin brother of Yoriichi Tsugikuni, the strongest Demon Slayer that ever existed.
Kokushibo is also the ancestor of Muichiro Tokito and Yuichiro Tokito and the one responsible for turning Zenitsu Agatsuma's senior, Kaigaku, into a demon and joining the Twelve Kizuki.
==Powers and Stats==
Tier: At least 
Name: Kokushibo, Michikatsu Tsugikuni
Origin: Kimetsu no Yaiba
Gender: Male
Age: 17-24 (Human); at least over 480 years old chronologically 
Classification: Human (Formerly), Demon Slayer (Formerly), Demon, Twelve Kizuki member, Upper Rank One
Powers and Abilities:
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|-|Abilities=
*Superhuman Physical Characteristics
**Acrobatics
**Enhanced Senses (Demons can easily smell blood and poison being able to differentiate more or less nutritious blood types. Possesses six eyes and creates numerous eyes on his sword and blades to further augment his vision and situational awareness)
**Extrasensory Perception (Able to sense the presence of others and malicious intent, this can be used to differentiate humans and demons, determine how strong someone is to a certain extent or detect an enemy in the vicinity. Was able to sense that Akaza died from an extremely long distance)
**Immortality (Type 1, 2 & 3)
**Regeneration (High-Mid - Even after being reduced to a decapitated head, a low-level demon would have still been capable of regenerating if his head were to be "completely crushed")
**Self-Sustenance (Type 3 - )
**Body Control (A low-level demon could grow hands from its head after it lost its body. Superior to demons who can use their flesh to form clothes, rope, and metallic weapons. Can create and control a katana and its scabbard made from his flesh. Was able to grow dozens of katanas out of his body)
***Absorption (Is known to absorb and phase demons he defeats into his body, with Muzan's permission, to permanently kill them despite their regeneration and immortality)
**Transformation (Can transform into a grotesque spider-looking form)
**Limited Information Analysis (Demons can perceive details like blood type, sickness and genes)
**Limited Telepathy (Can share his thoughts and sight with lower ranked demons if Muzan permits it)
**Limited Corruption & Power Bestowal (Type 1 - Muzan can choose to transform a human into a demon if an Upper Rank gives them their blood)
*Supernatural Willpower
*Battle Spirit (Overwhelming Aura that causes the opponent fear and paralysis with them feeling the air getting heavier, and can even cause internal bleeding and external lacerations)
*Statistics Amplification (Total Concentration Breathing increase a person's speed and power to match demons. Demon Slayer Mark enhances his natural abilities even further)
*Weapon Creation (Created a katana and its scabbard from his flesh)
**Weapon Mastery (Possesses around 500 years worth of swordsmanship experience. Is the second strongest swordsman in the entire series, second only to the strongest Demon Slayer in existence, Yoriichi Tsugikuni)
**Weapon Control (Can control the shape of his katana. Was able to grow his katana out of his body)
**Perception Manipulation (Can create seemingly elemental effects when he was human)
**Shockwave Generation (Can perform powerful sword slashes that generate shockwaves which extend his range of attack)
**Blade Danmaku (His Blood Demon Art allows him to create dozens of chaotic sharp blades shaped like crescent moons that constantly change in size, length and speed. Can shape, create, and extend his sword slashes. Was able to generate dozens at once without even swinging his sword)
*Perception Amplification, Information Analysis, Enhanced Enhanced Sight, Analytical Prediction & Limited Precognition with Transparent World (Transparent World makes his perception of time slow down and allows the user to directly see his opponent's muscles, blood flow and movements which allows them to predict their next moves. Was able to tell that Muichiro was his descendant and Genya ate demons)
*Adaptation (Adapted to Nichirin Sword decapitation. Scales to Akaza's and Doma's adaptive abilities as he's superior to them. Can make himself immune to poisons he didn't experience by being telepathically informed about its properties)
*Instinctive Reaction (Superior in reflexes and skill to Kyojuro, Mitsuri, Sanemi, and Giyu who can react instinctively)
|-|Resistances=
Resistance to:
*Disease Manipulation (Demons don't get sick)
*Poison Manipulation (Superior to strong demons who have high poison resistance. Should be far superior to Gyutaro who shook off a poison dosage that would paralyze an ordinary demon for half a day within moment. Superior to Doma who can eventually adapt to poison strong enough to kill the average demon seven hundred times over)
*Biological Manipulation (Users of Total Concentration Breathing are resistant to Muzan's blood which can immediately transform normal humans into demons with a scratch, leading them to require a few days to willingly transform. Can resist Muzan's injected blood which rapidly attacks and destroys cells leading to quick melting and vaporization, especially with the Demon Slayer Mark)
*Pain Manipulation (Was unbothered by having his ear cut and didn't show signs of pain from having his shoulder crushed)
*Regeneration Nullification (Up to High-Mid - Superior to Akaza who could regenerate from Tanjiro's Hinokami Kagura techniques which nullify regeneration)
*Fear Manipulation & Paralysis Inducement (Able to withstand the aura of Lower Ranks and Upper Ranks that causes fear and paralysis)
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Attack Potency: At least Building level+ (Fought Marked Sanemi, Gyomei and Muichiro at the same time.)
Speed: At least Massively Hypersonic, likely far higher (Blitzed base Gyomei, Sanemi, Akaza and Muichiro with him stating that his speed is in a completely other dimension compared to the Hashira)
Lifting Strength: Class 50 (Should be physically comparable to Gyomei)
Striking Strength: At least Building level+
Durability: Unknown with his body, at least Building level+ with his neck (It took the combined efforts of marked Sanemi and Gyomei to cut off his neck. While the durability of a demon's body is inconsistent and can be hurt by weaker foes, their necks are their most durable body part and can tank attacks from characters who are comparable to their AP)
Stamina: Infinite (Demons don't tire)
Range: Extended Melee Range; Tens of Meters with his Blood Demon Art; possibly Hundreds of Meters with Fourteenth Form: Catastrophe, Tenman Crescent Moon.
Standard Equipment: Flesh Katana (Kokushibo carries a fleshy and demonically modified version of a Nichirin katana he used when he was a Demon Slayer. As suggested by its appearance, the katana is created from the flesh and blood of Kokushibo himself and due to his body's immense durability and hardness, his katana is as sharp, if not more, than a regular Nichirin Sword. His sword is fleshy red in color, akin to the color of blood, with veins and his eyes all around the blade and even the hilt. However, it is unknown whether those eyes can be used to extend his vision. His katana's hilt is circular shaped with 4 slight indentations, a center with 3 eyes and several black veins and a golden border. He also carries a sword sheath at his waist that has the same fleshy appearance as his katana)
Intelligence: Gifted (As a talented swordsman who has existed for over four centuries, Kokushibo has experienced countless battle situations and threats which he has learnt to overcome and circumvent. This was displayed during his battle with three Hashira and Genya, where he was able to adapt to their special and unique fighting styles and tactics nigh instantaneously after witnessing it. For example, after Muichiro unleashed his first attack against the Upper Rank, he was able to determine he was a user of Mist Breathing, a talented one at that. This was further accentuated through Kokushibo being able to take on Sanemi and Gyomei simultaneously despite both of them being marked and being users of different Breathing Styles, meaning he’d have to deal with 2 vastly different opponents at once, which he did so successfully, even overwhelming them multiple times)
Weaknesses: Sunlight would reduce him to ashes. Wisteria flowers are poisonous to him.
Notable Attacks and Techniques:
Dark Moon - Evening Shrine.jpg|First Form: Dark Moon, Evening Palace
Rhyolite - Rapid Conquest & Moonlit Pearl Flowers.jpg|Second Form: Pearl Flowers Moongazing
Death Moon of Abandonment - Chain.jpg|Third Form: Loathsome Moon, Chains
Cursed Vortex of the Ghostly Moon.png|Fifth Form: Moon Spirit Calamitous Eddy
Solitary Moon in the Eternal Night - Avici.jpg|Sixth Form: Perpetual Night, Lonely Moon - Incessant
Misfortune Mirror - Lunar Shine.jpg|Seventh Form: Mirror of Misfortune: Moonlit
Lunar Ouroboros.jpg|Eighth Form: Moon-Dragon Ringtail
Descending Moon - Perpetual Phases.jpg|Ninth Form: Waning Moonswaths
Piercing Phase Slash - Ivy Moon.jpg|Tenth Form: Drilling Slashes, Moon Through Bamboo Leaves
Calamity - Heaven's Full Crescent Moon.jpg|Fourteenth Form: Catastrophe, Tenman Crescent Moon
Lunar Rainbow - Fragmented Moon.jpg|Sixteenth Form: Moonbow, Half Moon
*: A Breathing Style that mimics the moon and replicates it with the user's movements, techniques and abilities. Most, if not all, known techniques and forms are standard yet varied swordsmanship techniques that focus on swift and powerful strikes that always follow the shape and pattern of a crescent moon. Due to this Breathing Style's great variation in techniques, this swordsmanship form has a great blend of offense and defense, similar to the Sun Breathing.Kokushibo was the first demon that utilized Breathing Styles. His version of Moon Breathing, in particular, is one of the most dangerous and powerful ones displayed thus far. Enhanced with his Blood Demon Art, he can create many chaotic crescent moon blades when slashing that vary in length and size in crescent shaped sword attacks. Kokushibo had continued to develop this Breathing Style and had created over a dozen techniques over the centuries he had lived.
** - Kokushibo quickly draws his sword and slashes swiftly in a singular horizontal motion in a crescent shape, creating numerous chaotic crescent blades. This technique is extremely reminiscent of Iaijutsu.
** - Kokushibo performs several crescent-shaped slashes that defend him from incoming attacks, sending a barrage of crescent blades.
** - Kokushibo swings his sword rapidly in two gigantic crescent slashes, from which a storm of smaller crescents spread, causing huge destruction in a small area.
** - Kokushibo makes multiple curved slashes layered over one another, creating a rising vortex of sword slashes and crescent moon blades.
** - Kokushibo releases a wild barrage of crescent-shaped slashes several meters in front of him. This technique was powerful enough to overwhelm Sanemi Shinazugawa and so long-ranged that it slices up the surrounding columns.
** - Kokushibo swings the gigantic version of his sword in a powerful frontal crescent-shaped slash that creates powerful multi-directional long-ranged slashes in the ground.
** - Kokushibo uses the gigantic version of his sword and creates a singular gigantic crescent-shaped slash that slowly decreases in size, creating dozens of crescent moon blades.
** - Kokushibo creates a stream of long-ranged crescent-shaped vertical and horizontal slashes along with numerous crescent moon blades with the gigantic version of his sword.
** - Kokushibo creates a long-ranged triple-layered slash twister full of crescent moon blades with the gigantic version of his sword.
** - Kokushibo uses the gigantic version of his sword and creates a chaotic vortex of powerful extremely long-ranged omni-directional slashes that destroys whatever is caught up within its attack radius.
** - Kokushibo creates a barrage of downward crescent slashes from an extremely long and wide range, resulting in a powerful six-fold slash crashing down on his opponents; the attack itself is powerful enough to create several miniature craters where the slashes have landed.
*: .
**: Similar to Yoriichi, Kokushibo has not only gotten access to the Transparent World, but also obtained the ability to constantly use it. This allows him to see the muscles, blood flow, and joint movement of his opponents. He can accurately predict and anticipate the movements and attacks of his opponents with this ability. He was also able to identify that Muichiro was his descendant, immediately discern the skill level of Muichiro, Sanemi, and Gyomei with one look, and see that Genya consumed demons to gain strength.
==Notable Matchups==
Victories:
Losses:
Guts (Berserk) Guts' Profile (Black Swordsman Guts with the Berserker Armor was used, and speed was equalized)
Inconclusive:
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