Kiriya Ubuyashiki

Kiriya is a fair-skinned boy with large purple eyes. He first shares the blunt fringed bob of his siblings and, raised as a girl, appears more feminine early on, with pronounced lashes and red lips.

Once he becomes leader of the Corps, he sheds the feminine touches, parting his hair and wearing a black kimono beneath a long white haori in the manner of his father. More than a century later he is still living as the oldest person in Japan, by then bald, deeply wrinkled, and small in stature.

At Final Selection Kiriya seems polite, capable, and emotionally distant, greeting the trainees in unison with his sister and dryly asking whether Genya was finished after the boy manhandled her. The deaths of his parents and older sisters reveal a leader, as he immediately organizes the Corps' attack on Muzan despite no time to grieve.

He holds firm confidence in his fighters, refusing to redirect Tanjiro and Giyu against Kokushibo. Yet he is not unbreakable: when his plan leaves many slayers slaughtered, he freezes under the guilt until Kuina slaps him back to focus. After the war he finally lives as an ordinary man, weeping with relief when Giyu tells him his father would be proud.

Kiriya possesses an extraordinary memory, charting the ever-changing layout of the Infinity Castle together with his sisters and steering the Pillars through its corridors as the battle unfolds. Like his father and ancestors, he also shows near-prophetic intuition, making accurate predictions on instinct alone.

He commands like a seasoned general despite his age, slotting straight into the Corps' command structure as logistical support. After Muzan's defeat lifts the Ubuyashiki curse that killed the family's men young, Kiriya is granted unusual longevity, surviving well past a hundred years.