Kaito Yuki

Kaito reads as a typical teenage boy, his black hair kept short and tousled with a small cowlick standing up at the crown.

His uniform is a tweaked version of the standard jujutsu attire, finished with boots that reach the knee and white sleeves striped with a single black line.

Order and discipline matter greatly to Kaito. He treats the rules of jujutsu as something close to sacred, which puts him squarely at odds with Yuji Itadori, whose very existence he sees as a violation of those principles. That conviction shapes his hostile stance toward Yuji throughout his appearances.

Kaito's innate ability is the Prayer Formation Technique, which raises a barrier built around an anchoring object he refers to as a "cornerstone." Anyone caught inside is placed under a curse that compels them to fight, and that forced conflict swells the cursed energy contained within the space. A binding vow shapes its limits: the technique cannot benefit Kaito himself, so he gains no boost to his own power, and the same exemption extends to anyone holding the cornerstone, since it carries his energy. To disguise the technique's real workings, Kensuke Nagino publicly mislabeled it the Cursed Technique Boost.

He also commands several extension techniques. Night Hunt raises a barrier that pens in cursed spirits much like a curtain while lightening and amplifying the humans trapped with them. Prayer to Palm Strike forms a spherical barrier around the fist gripping the cornerstone; striking an opponent shatters the barrier and pours its stored force into the punch.