Kurotama

Biodata

Feature	Value
Name	Kurotama (黒瞳)
Alias(es)	Shikoku Danki; Berserker (actually Assassin); X 170 174
Gender	Male by official esper profile; normally manifests through a feminine avatar body 67 123
Affiliation	Demon Slayer Corps; Tokiwadai Academy; Night Raid; Matou Household during the Holy Grail War 81 113 171 220
Occupation/Role	Avatar, assassin, swordswoman, Level 5 esper, Servant 67 113 170
Status	Active 232
First Appearance	Chapter 67

Power Progression

Stage / Realm / Level	Chapter	Notes
Daily Type / Combat Type	67	Unlocked with 8 (+4) hours of Daily Type and 20 (+10) minutes of Combat Type; Combat Type restores her full combat power and normal young-girl appearance.
Yatsufusa: Demon Slayer +6	90	Its full-power slash could decapitate a Lower Rank demon; Kurotama was considered close to Pillar-level in demon hunting.
Yatsufusa: Demon Slayer +10	93	The weapon's demon-slaying effect became vastly stronger than during her first battle with Rui.
Level 5 Esper	113	Academy City recognized her as a Level 5 after testing her avatar-based ability.
Official Level 5 Profile	123	Her esper profile was publicly released, including the disclosure of her male gender.
Grandmaster Swordsmanship	220	Her blade control advanced to the point that she could split a tossed coin and use the fragments as lethal projectiles.

Background

Kurotama was unlocked as an avatar with two operating forms: a longer-lasting Daily Type and a brief Combat Type. Her Combat Type restores her full strength, though even her smaller Cursed Child form is beyond an ordinary person's ability to defeat. 67 69

She was trained through the Imperial Bureau's assassination methods, giving her elite combat instincts and techniques. In the Gastrea world, she began teaching swordsmanship and combat skills to Cursed Children in the Outer District so they could protect themselves. 71

Her body is dependent on system-provided medication. The same drug effect gives her extreme survivability, but deprivation causes unbearable pain. 67

Appearance

Kurotama usually appears as a petite black-haired girl in a black sailor uniform. Her understated appearance sharply contrasts with her speed, strength, and assassin-level swordsmanship. 67 84

• Black sailor-style top and skirt, with black stockings. 67
• Small, slender build; her Combat Type appears as a normal young girl rather than her Cursed Child form. 69
• Pale complexion and short black hair. 127
• Can suppress her killing intent so thoroughly that observers mistake her for an ordinary girl. 84

Personality

Kurotama is calm and casually confident even against stronger enemies. She often fights with a faint smile, taunts opponents to create openings, and uses deception as naturally as direct combat. 94 173

Despite her assassin background, she shows concern for vulnerable people. She proposed training Outer District children, protected civilians during Academy City incidents, and pitied demons such as Gyutaro and Daki while still holding them accountable for their crimes. 71 119 98

She can be playful and provocative around friends, particularly Misaka Mikoto, Shirai Kuroko, and Akame. Her blunt teasing often causes friction, but she remains protective of people she accepts as allies. 114 117 217

Abilities & Skills

Master Assassin

Kurotama possesses elite assassination techniques, combat intuition, and killing intent capable of breaking an opponent's resolve. 67

• Uses rapid draw-slashes capable of delivering dozens of cuts in an instant. 79
• Can move through forests, evade ambushes, and maintain balance at high speed. 79
• Her swordsmanship later reached grandmaster-level precision. 220
• Can create ranged blade pressure powerful enough to shatter Rui's Killing Eye Cage and kill a distant demon. 80

Intuition

Kurotama's intuition allows her to identify danger and locate concealed enemies before they attack. 79 122

• Detected distorted opponents using light refraction. 122
• Dodged Esdeath's long-range ice attack before it struck. 232
• Can see names and health bars above hostile targets during the Holy Grail War. 178
• Uses observation and behavioral deduction to anticipate events and opponents' intentions. 132

March of the Dead: Yatsufusa

Yatsufusa is Kurotama's cursed Imperial Armament and Noble Phantasm. It can turn slain targets into obedient puppets that retain their former strength and abilities. 67 170

• Can control up to eight puppets at once. 67
• Controlled puppets reduce Kurotama's own combat power; stronger puppets are therefore more worthwhile. 67 95
• Successfully controlled demons including Rui, Akaza, Gyutaro, Daki, and Hantengu's group. 80 94 98 107
• Its control can sever a demon from Muzan's authority. 94
• In its Servant manifestation, it can control even Heroic Spirits; sufficiently powerful puppets raise its ranking to EX-class. 170
• Puppets drawn from the Demon Slayer world remain vulnerable to sunlight. 121

Demon-Slaying Enhancement

Yatsufusa was reinforced with demon-slaying materials and later sunlight magic. 90 107

• Its Demon Slayer attribute rose from ineffective early performance against Rui to +6, then +10. 79 90 93
• Repeated cuts stack suppressive effects on demons, slowing their regeneration. 107
• Sunlight magic grants additional damage against demons. 107
• Even when its demon-slaying effect was weak, Kurotama could kill demons through overwhelming repeated damage. 79 94

Avatar Summoning

Kurotama can bring forth additional avatars and puppets to overwhelm enemies or create escape opportunities. 113 124

• Summoned Upper Rank demons to battle Kiyama Harumi and Kanzaki Kaori. 124 127
• Used controlled Upper Ranks to suppress Doma while protecting Shinobu Kocho. 107
• Can summon Yukino as a heavy-hitting combat avatar. 128
• Her summoned bodies can provide battlefield support without exposing all of her abilities at once. 121

Simulated and External Support Abilities

Kurotama can receive temporary support from other avatars, expanding her combat options. 170 173

• Used simulated Vector Control to reflect Mugino Shizuri's Atomic Buster. 149 150
• Received Flame, Frost, Stun, Poison, and Slow enhancements from Rikku. 170
• Used Shikoku's Coordinate Movement to redirect Gilgamesh's attacks back at him. 173
• Can use support effects to reinforce Yatsufusa or compensate for unfavorable matchups. 170

Drug-Based Super Durability

Kurotama is exceptionally difficult to kill unless her head is destroyed or her heart is pierced/destroyed. 67 170

• Can continue fighting through injuries that would incapacitate ordinary humans. 128
• Her durability is tied to medication; without it, she suffers extreme side effects and agony. 67 170
• Does not make her invulnerable—against opponents such as Kanzaki Kaori, a lapse in concentration could still be fatal. 128

Servant Manifestation

During the Holy Grail War, Kurotama manifests as a Berserker-class Servant while actually operating as an Assassin. 170

Parameter	Rank
Strength	B
Endurance	C
Agility	A
Magic	E
Luck	A
Noble Phantasm	C–EX
Independent Action	EX
Assassin Technique	A

Her Independent Action allows her to function with almost no dependence on her Master's mana supply. 170

Equipment / Weapons / Items

• Yatsufusa / March of the Dead — Cursed katana and Noble Phantasm capable of turning slain targets into puppets. 67 170
• System-provided medication — Required to prevent the agony caused by her drug-based condition. 67
• Wooden swords and training gear — Used while teaching combat skills to Cursed Children. 71

Relationships

• Su Lin — Kurotama is Su Lin's avatar and acts as his attendant when he is safe, becoming his protector when he is threatened. 84
• Tanjiro Kamado — Allied with him on Spider Mountain; she advised him during the fight against Rui and fought beside him against Lower Rank Five. 79 80
• Shinobu Kocho — Ally within the Demon Slayer Corps; Kurotama protected her from Doma and deliberately left her the final blow for revenge. 80 107 108
• Giyu Tomioka — Supported Kurotama's admission to the Demon Slayer Corps after witnessing her control Rui. 80 81
• Misaka Mikoto — Fellow Level 5 and close companion; they fought together during Academy City incidents and shared romantic moments. 113 117 121
• Shirai Kuroko — Initially viewed Kurotama as a rival for Mikoto's attention, but later worked alongside her during Judgement operations. 113 123 132
• Takanashi Rikka — Provides simulations and support abilities, including Vector Control and sunlight magic. 107 146 149
• Matou Kariya — Her Master during the Holy Grail War; Kurotama chose to protect him through Yukino. 171
• Akame — Calls Kurotama her sister and is intensely protective of her; the two cooperate as Night Raid allies. 217 220 232
• Jibril — A powerful Flügel opponent whom Kurotama confronted directly despite being unable to fly. 208 209

Story Role / Major Arcs

Gastrea World

Kurotama defeated a Stage III Gastrea Spider Monster with a single slash after Rentaro and Enju intervened. She later began preparing Cursed Children in the Outer District for self-defense through swordsmanship training. 70 71

Demon Slayer Corps

At Spider Mountain, Kurotama confronted Rui despite Yatsufusa initially being poorly suited to demon killing. She broke Rui's thread techniques through speed and repeated strikes, killed him, and turned him into a puppet. 79 80

After joining the Demon Slayer Corps, she used reinforced Yatsufusa to defeat Akaza, Gyutaro, Daki, Hantengu, Doma, and Kokushibo. Her puppet army and sunlight-enhanced weapon let her alter the balance of the Infinity Castle battle. 81 94 98 101 107 108

Academy City

Kurotama entered Tokiwadai Academy and was recognized as a Level 5 esper. She became involved in the Imaginary Hand incident, worked with Mikoto and Kuroko, and used her avatars against Kiyama Harumi. 113 119 124

She later defeated Accelerator, interrupting the Absolute Ability User plan, and forced Mugino Shizuri to owe her a favor after overwhelming her with reflected Atomic Buster attacks. 146 149 150

Holy Grail War

Kurotama manifested as Shikoku Danki's transformed Servant form, fought Diarmuid, and used Yatsufusa to seize control of a Hassan personality. 170

She provoked and outmaneuvered Gilgamesh by redirecting his Noble Phantasms, proposed the Feast of Kings, and later exposed information that made Gilgamesh regard her as a serious threat. 173 174 177

Cycle User and Night Raid Operations

Among the Cycle Users, Kurotama faced Jibril directly and fought her at supersonic speed despite lacking aerial mobility. The Sovereign's Main Quest specifically required the other Cycle Users to protect her. 208 209

As a Night Raid ally, she eliminated foreign assassins with Akame and Brand, displayed grandmaster swordsmanship, and later fought Esdeath alongside Akame with Schubie's support. 220 232

Notable Quotes

“Now, you foolish thing, you will become my puppet!” 94

“I only know how to use a sword.” 206 208

“You're very ugly right now, you know?” 108

Trivia

• Kurotama's official Academy City profile identifies her as male despite her usual feminine presentation. 123
• Her first recorded Combat Type duration was only 20 (+10) minutes, far shorter than her Daily Type duration. 67
• She was once unable to afford a crepe because she had no money on hand. 115
• Her system grants her an affinity bonus with women, which she credits for some of her unusually close interactions. 114