Fuuma Kotarou

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Base Atk1,316Base HP1,592
Max Atk 7,091 Max HP 8,844
Grail Atk 9,597 Grail HP 11,991

Stat Ratings

Attack / HP Growth


Kotarou is an AoE star generation-oriented Assassin with a strong supportive game and several tricks up his nonexistent sleeves. While his offensive output as an Assassin is lackluster compared to competitors such as Jing Ke and Hassan of the Hundred Personas, he makes up for it with star generation comparable to Jack the Ripper, as well as a supportive skillset that can be applied to many team compositions.


Powerful star generation support.

Packing three Quick cards with four hits each at his disposal, almost any of Kotarou’s brave chains will produce an absurd number of stars. This, factored in with the star generation boost on his targetable dodge and his high-hitcount Quick NP, makes him a powerful star generator in every aspect, able to quickly rack up stars for his team.

Targetable dodge skill.

A desirable rarity, Kotarou possesses the ability to shield a chosen ally from damage for a round with his second skill Ninjutsu, giving him supportive abilities comparable to Mashu if he needs to fulfill such a role. Alternatively, he can simply cover his own hide and benefit from the sizeable star generation buff it grants.

Powerful debuffing kit.

Across his skills and NP, Kotarou can plaster the enemy team with debuff resistance down, attack down, critical rate down and skill seal all in one. Once he obtains his NP interlude at a later date, defense down gets added to that list as well. Kotarou is a walking debuff machine, and his powerful debuff resistance drop from Suspicious Shadow makes all of those debuffs absurdly consistent, for both him and any allies with AOE Stuns or Charms. Kotarou can therefore pull off interesting combos such as making Tesla’s NP’s Stun almost guaranteed, or doubling up on Assassins with Shuten to bog the enemy down in a haze of annoying debuffs.


Low damage output.

While it doesn’t play into his role as a servant, Kotarou cannot inflict significant damage while producing critical stars in the same way Jack the Ripper or Atalante can, due to his lack of offensive steroids and late-arriving NP interlude. While his attack stat remains on the higher end of the 3* Assassin spectrum, it isn’t enough to compensate for the offensive buff skills other Assassins possess.

Dependent on Allies.

Kotarou is dependant on his allies to make his kit work, but not in the way that a critical damage dealer needs stars. Kotarou’s kit appeals to a few very specific niches, namely star generation without using Fragments of 2030 and debuff teams. While these niches aren’t bad, his applications in teams which don’t take advantage of his supportive ability is essentially limited to using his dodge skill to aid his allies, something other servants do better. As a result, he often needs his teams built around him to reach his full potential.

Craft Essence Recommendation

Imaginary Around / Gandr - Kotarou has a lot of Quick cards, low damage and a star generation focus. Naturally, this means he wants to boost those cards as much as possible.

Record Holder - An oft-disregarded one, this CE gives Kotarou a notable boost to his debuff success rate, meaning his debuffs can start hitting enemy servants through E-C rank Magic Resistance most of the time. While he sacrifices the boosts from other CE’s for it, being able to assuredly land his debuff resistance drop is sometimes more important.

Decapitating Bunny 2016 - An alternative CE for those who want Kotarou to assume a damaging role with his NP. Granting a small Quick buff and a free permanent Invulnerability Pierce buff, this allows Kotarou to dish increased damage and star generation more consistently.

Level Up Skill Recommendation

Kotarou gets the most mileage out of leveling Ninjutsu first, both reducing the cooldown on its targetable dodge and improving the star generation buff should he use it for his own purposes. Paranoia has excellent level scaling, but it is mostly focused on his debuff niche and as such should take a backseat to Ninjutsu. Sabotage has practically no improvement from levelling outside of a reduced cooldown, and it’s still not particularly good, so it can remain low priority.

Servant Skills

Sabotage B+

Reduces all enemies' attack by 10% for 3 turns.
Reduces their critical attack chance for 3 turns.

Show Info
Crit Chance - 10%11%12%13%14%15%16%17%18%20%
CD 7 7 7 7 7 6 6 6 6 5

Available from the start

Ninjutsu A+++

Grants one ally's Evasion for 1 turn.
Increases their critical star generation rate for 1 turn.

Show Info
Star Rate + 30%32%34%36%38%40%42%44%46%50%
CD 8 8 8 8 8 7 7 7 7 6

Unlocks after 1st Ascension

Unlocks after 3rd Ascension

Class Skills

Presence Concealment A+

Increase your Critical Star Drop Rate by 11%.

Noble Phantasm

Immortal Chaos Brigade

Undying Chaotic Brigade

Deals damage to all enemies.

Overcharge Effect

Inflicts Disorder status for 5 turns to them.
(Chance to Seal enemy skills every turn.)

Level 1 2 3 4 5
Damage + 600% 800% 900% 950% 1000%
Charge 100% 200% 300% 400% 500%
Skill Seal Chance + 30% 40% 50% 60% 70%

Immortal Chaos Brigade

Undying Chaotic Brigade

Upgrade via Interlude 1 (not available, ETA 2019/10)
Deals damage to all enemies.
Reduces their defense by 20% for 3 turns.

Overcharge Effect

Inflicts Disorder status for 5 turns to them.
(Chance to Seal enemy skills every turn.)

Level 1 2 3 4 5
Damage + 800% 1000% 1100% 1150% 1200%
Charge 100% 200% 300% 400% 500%
Skill Seal Chance + 30% 40% 50% 60% 70%

Ascension Materials


Skill Enhancement Materials

1 → 2 50,000
2 → 3 100,000
3 → 4 300,000
4 → 5 400,000
5 → 6 1,000,000
6 → 7 1,250,000
7 → 8 2,500,000
8 → 9 3,000,000
9 → 10 5,000,000

Unit Info

Star Info

Star Absorption100
Star Generation25.6%

NP Info

NP Charge per Hit (%)0.54%
NP Charge when Attacked (%)4%

Hits Info

# of Hits (A)4
# of Hits (B)1
# of Hits (Q)4
# of Hits (EX)4

Traits Info

Trait 1HumanoidTrait 6
Trait 2MaleTrait 7
Trait 3ServantTrait 8
Trait 4Weak to Enuma ElishTrait 9
Trait 5Trait 10

Death Info

Instant Death Chance38.50%

Other Info

Release History
AKAs/Aliases/(Fan) Nicknames
AlignmentChaotic Evil
Country/Place of Origin
IllustratorSasaki Shonen
Seiyuu (CV)Hanae Natsuki