Koga Saburo

, Class Name , is the Assassin-class Servant summoned by Dorothea Coyett in the Waxing Moon Ritual of Fate/Samurai Remnant.
==Profile==
===Identity===
The ancestor of Mochizuki Chiyome and a Japanese figure who Shuten-douji greatly dislikes. He is associated with the god of .
Detailed in the , Yamata-no-Orochi placed a curse on Koga Saburo after Saburo committed the crime of trespassing on and destroying a serpent's nest, passed down in the Koga Mochizuki bloodline.Fate/Grand Order material V - Mochizuki Chiyome ProfileFate/Grand Order: Epic of Remnant - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses, Section 9: Paraiso (Ending) He was cursed by the god of Mount Ibuki, Yamata-no-Orochi, and traveled through the underworld beneath the mountain, eventually returning to the surface as a demon. Ibuki-douji was the one who rescued him and returned him to the human realm, and he refers to her as his elder sister because they are both connected to Yamata-no-Orochi.
===Appearance===
Saburo Danciao.png|Assassin in Fate/Samurai Remnant material, illustrated by danciao.
===Personality===
Assassin likes his Master Dorothea. He sees his younger self in her. He often complements Dorothea's ability, though Dorothea admits that he sometimes overestimates her.He is curt, arrogant and condescending in battle, gleefully laughing while attacking and appears to take pride in the power he is granted.
==Role==
===Fate/Samurai Remnant===
Fate/Samurai Remnant - Chapter II: Surging WavesFate/Samurai Remnant - Digressions: Lady Musashi in the Flower QuarterFate/Samurai Remnant - Chapter III: Hidden InfluencesFate/Samurai Remnant - Chapter IV: The Gods StirFate/Samurai Remnant - Digressions: A Rolling Stone Gathers No MossFate/Samurai Remnant - Digressions: Meeting of Two Assassins
==Abilities==
Koga Saburo is connected to Takeminakata, a Japanese god of war. Furthermore, he was cursed by the god of Ibuki at some point in time, which granted him several strange abilities. He once traveled to the Underworld beneath Mt. Ibuki and returned as an Demon. According to Dorothea Coyett, Saburo is the strongest Assassin-class Servant that can be summoned in the Waxing Moon Ritual. Due to this, she puts confidence in his Monstrous Strength. 
===Combat===
He claims to be the founder of the Koga school of ninjutsu and utilizes many strange jutsus. But despite being the ancestor of the Koga Mochizuki ninja clan, no legends actually call Koga Saburo himself a ninja. The reason he can use Ninjutsu-like abilities is he was born with divine powers and developed survival techniques necessary for traveling outside the World. His long arms and legs flex like whips.Fate/Samurai Remnant - Official Website: Characters
Saburo easily defeated Li Shuwen, however, it should be noted that Li was a Stray Servant and weakened by Tsuchimikado Yasuhiro's mind control at the time. Saburo has also been shown stalemating Arjuna, another Stray Servant. Saburo claims that Arjuna is awfully fast, to which Arjuna replies that he could say the same about him. As Arjuna realizes that their fight is going nowhere, he decides to charge his Noble Phantasm. Saburo retreats claiming he can't risk it, as he fears the legends saying that Arjuna's arrow can slay even gods.
Saburo failed his assassination attempt on Zheng Chenggong, forcing them to fight face to face. While Zheng managed to escape, it was only by the skin of his teeth.
====Phantom Snakes====
Koga Saburo can summon and manipulate many serpents called Phantom Snakes as his subordinates. Zheng Chenggong regards him as a dangerous Heroic Spirit, and claims that Zhou Yu and him were unable to take care of him alone. He says that his ability to control giant, venomous snakes complicates things considerably, so even ordinary methods like Zhou's "rain of arrows" wouldn't be enough to take him down. Yamato Takeru agrees that Saburo is really powerful and doubts whether they and Miyamoto Iori can handle him without Magical Energy from a Spirit Font. During the battle at the bay, the groups of snakes are so ferocious that they can match Takeru and Iori endlessly, making the former request permission to use their Noble Phantasm. Thanks to the arrival of Miyamoto Musashi, Zhou Yu, and Zheng, they eventually defeat the majority of the snakes.
There are several types of snakes:
*Phantom Snake: Zheng Chenggong states that each individual snake is really powerful. His snakes can mind control humans by biting their necks.
*Giant Phantom Snake: A three-headed and slightly larger variant of the regular snakes. According to Miyamoto Musashi, one of these is powerful enough to wreck a town. It looks pretty strong, so Musashi deems it a good fight. After fighting it and other Phantom Snakes for a while, the giant one retreats.
*Great Orochi, the Raging Tempest: An enormous eight-headed snake, bearing six smaller heads wrapped around a larger horned seventh head, with its eighth head acting as a tail. Its scales are colored white around its body, like the Orochi summoned by Ibuki-Douji, and black around its heads, like snake summoned by his descendant. Ushi Gozen was able to seize control of it and ride it herself. While Yamato Takeru initially claims that the Orochi cannot defeat them, they later say that it might actually be a contest. Eventually, Takeru laments that they can't slow it down at all because its regeneration is extremely fast. When Takeru and Iori leave to target Ushi Gozen, Miyamoto Musashi is tasked with fighting the Great Orochi on her own. While she succeeds in knocking it out, it is only incapacitated for a while, and eventually regains its strength. In the end, it is actually Takeru who kills it permanently with Special Technique - Eight-Current Raging Storm.
**The Great Orochi had also shown the ability to summon six other colossal Phantom Snakes alongside itself, each resembling an enlarged version of its smaller heads
===Skills===
====Class Skills====
*Presence Concealment (A+ Rank): The highest rank of Presence Concealment. When used to the fullest, it places the user into an invisible state completely impervious to outside perception. Even Zhou Yu is unable to sense him. When Saburo tried to assassinate Zheng Chenggong, the latter didn't know he was there until he was right on top of him. 
*Divine Manifestation (B Rank): A similar yet distinct skill to Oni-kind Demon. It is a composite of skills like Divinity, Morph, and Monstrous Strength. Koga Saburo's association with an ancient god should have been enough to prevent Tsuchimikado Yasuhiro's mind control spell from working on him, but Saburo actually let himself be controlled.
===Personal Skills===
*Kouga-ryuu (At least A Rank): A style of ninja arts that uses special fighting techniques which he is the creator.
*Ninjutsu (At least A+++ Rank): Dorothea Coyett claims that he is known for being the strongest.
*Curse of the Orochi (At least B Rank): The original man cursed by Great God Ibuki, which was later inherited by his bloodline.
===Noble Phantasm===
Koga Saburo's Noble Phantasm is Incarnation - Ibuki Daimyōjin Engi. It transforms him into a snake-human fusion optimized for battle. It greatly increases his physical capabilities, granting immense Strength, Agility, and Stamina with which to pulverize opponents. Furthermore, he is covered with the scales of Yamata-no-Orochi, which not only nullify any attacks without Divinity, but are also durable enough to easily shrug off attacks from Heroic Spirits of the Three Knight Classes. Yamato Takeru points out that this is a constant among Japanese Snake Gods, and that he already defeated one of them when he was alive. Due to this, he is confident that he can beat Saburo. However, while Yui Shousetsu states that Takeru's sword would certainly kill Saburo if it hit him, she claims that Saburo's abilities may also prove equally effective. Due to this, attacking him head-on would be a poor strategy. In the end, they defeated Saburo by drawing him out with Dorothea Coyett's Magecraft and Miyamoto Iori's support, for Takeru to then kill it with Special Technique - Eight-Current Raging Storm when the timing was right. When Miyamoto Musashi first saw Saburo's Noble Phantasm, she claimed that it had been a while since something made her tremble so much.
==Development==
===Creation and Conception===
Assassin was designed by danciao and illustrated by Rei Wataru in Fate/Samurai Remnant. His scenario writer is Hikaru Sakurai.
===Reception===
Assassin and Dorothea became artist Rei Wataru's favorite team in Fate/Samurai Remnant. Assassin's design is very catered to his tastes, and he ended up drawing him a lot in his free time.TYPE-MOON Ace Volume 15 - Fate/Samurai Remnant: Character Designer's Comments: Rei Wataru
==References==
Category:Characters in Fate/Samurai Remnant
Category:Introduced in 2023
Category:Servants
Category:Humans
Category:Demons
Category:Heroic Spirits
Category:Assassin-class Servants
Category:Unknown Attribute Servants
Category:Neutral Evil Servants
Category:B+ rank Strength Servants
Category:C+ rank Endurance Servants
Category:A rank Agility Servants
Category:C rank Mana Servants
Category:EX rank Luck Servants
Category:B rank Noble Phantasm Servants
Category:Not implemented in Fate/Grand Order
Category:Japanese Servants
Category:Ninja
Category:Servants with Divinity