Kagaya

The Ubuyashiki clan is a distant relative of Muzan Kibutsuji, the progenitor of all demons. Due to this bloodline, the entire clan was cursed, resulting in its members, especially the men, being born with poor health and dying before reaching the age of 30. In the Ubuyashiki family, it was customary for the heads of the family to marry the daughters of priests or swordsmen, as they could provide support while the hereditary illness progressed.

Kagaya is a man with Always gentle and calm demeanor. He shows genuine concern for the members of the Demon Slayer Corps, treating them as his own children, despite the fact that some of them are older than him. He is also capable of handling criticism well and is honest about his weaknesses.
Although his speech is smooth and soft, it is extremely tactful: Kagaya uses words and intonations to ensure that the person he is talking to listens to him.

Kagaya wears a dark kimono with a white haori over it. He has dark, medium-length hair. His face is covered with a pattern that resembles a cursed mark that slowly spreads across his body. This disease is inherited by all men in the Ubuyashiki clan. Before the disease affected his eyes, they were a light purple color.