Kagaya
Ubuyashiki

First appearance. Leader of the Demon Slayer Corps, first seen receiving word of Natagumo.

Detonates the Ubuyashiki Mansion with himself, Amane, and two of his daughters inside to wound Muzan and open the final battle. Killed by His own trap for Muzan.

Kagaya and Muzan come from the same bloodline. The Ubuyashiki family's curse and the Corps' thousand-year hunt share one origin.

Kagaya trades the Ubuyashiki Mansion and his own life for the opening blow, and Tamayo's Blood Demon Art pins Muzan long enough for the Hashira to converge.