九十九 由基
領域展開

Special Grade Sorcerer - Independent

Tsukumo
Yuki

Yuki is one of only four confirmed Special Grade sorcerers and operates entirely outside Jujutsu High's authority.

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Character Profile

A soul shaped
by darkness
and duty

Tsukumo Yuki

Yuki is one of only four confirmed Special Grade sorcerers and operates entirely outside Jujutsu High's authority.

She seeks to eliminate the root cause of curses rather than endlessly treating symptoms.

Her mentorship of Aoi Todo produced one of the series' most effective fighters.

Special Grade
Grade
Independent
Affiliation
Curse Root Elimination
Core Research
Garuda
Shikigami

Cursed Techniques

The Powers
Revealed

Tsukumo Yuki's arsenal of cursed techniques represents the peak of their abilities and strategic prowess. Each technique has been honed through years of battle and training.

01
Star Rage
星の怒り
Allows Yuki to add virtual mass to herself or her shikigami Garuda. The mass is imaginary — it doesn't increase physical size or weight in the normal sense — but delivers strikes of incomprehensible force that shatter through defenses that can stop conventional attacks.
Mass Manipulation
02
Garuda
ガルーダ
Yuki's shikigami — a massive bird of prey that serves as both a combat partner and her preferred vehicle. Garuda can be amplified with Star Rage for devastating impact attacks.
Shikigami - Partner
03
Simple Domain
簡易領域
A condensed personal domain that allows Yuki to counter Domain Expansions. One of the techniques she passed down to Aoi Todo.
Counter-Domain
04
Black Hole (Domain Expansion)
虚空の星
Yuki's domain creates a gravitational singularity — a black hole that consumes everything caught in it. She attempts to use this to destroy Kenjaku.
Domain Expansion

About the Series

Jujutsu Kaisen

"Jujutsu High is treating the symptoms. I want to cure the disease."

The Maverick

Yuki refuses missions from Jujutsu HQ and operates on her own research agenda.

Her goal — ending curses permanently by removing the emotional source — puts her philosophically opposite to both HQ and Kenjaku.

The Mentor

Yuki's chance meeting with a young Aoi Todo gave him his legendary phrase and his entire worldview.

Her teaching produced one of the series' most versatile Grade 1 fighters.

Key Relationships

Those who shaped
his path

I
Aoi Todo
Student - Legacy
Yuki discovered Todo as a child and introduced him to jujutsu. His question 'what kind of girls do you like?' comes directly from her.
II
Kenjaku
Final Battle
Yuki fights Kenjaku in the series' most philosophically charged duel — two opposing visions of what the jujutsu world should become.
III
Choso
Ally
Yuki and Choso team up against Kenjaku, providing the most sustained battle against the ancient sorcerer in the series.

Story Arcs

Tsukumo Yuki through
the arcs

Hidden Inventory Era

The Researcher Appears

Yuki meets Geto in 2007, revealing the divide between her philosophy and Jujutsu High's approach.

Culling Game

Returning to the Fight

Yuki intervenes in the Culling Game's fallout, working alongside Choso against Kenjaku's plans.

Final Arc

The Last Gambit

Yuki attempts to trap Kenjaku inside a black hole. She nearly succeeds — and dies in the attempt after a fight that costs both combatants everything.

Character Credits

Profile notes
& sources

Story details are summarized for fan reference and may be spoiler-adjacent for later arcs.

Character portrait reference: https://jujutsu-kaisen.fandom.com/wiki/Yuki_Tsukumo

Portrait artwork: AniList character gallery