Kagaya Ubuyashiki (産うぶ屋や敷しき 耀かが哉や Ubuyashiki Kagaya?) is the 97th leader of the Demon Slayer Corps known mainly as "Oyakata-sama" by his subordinates and peers. He is also the head of the Ubuyashiki Family.
Kagaya has light skin and black shoulder length hair. He has a curse mark that is slowly killing him that also makes his skin look as if it was rotting spreading down his face and covering his eyes making him unable to see, by the time of his death this curse had spread all over his body making moving nearly impossible. Muzan at Kagaya's death described him as having the smile of a Buddha.
He usually wears a black kimono with a long white haori with a pink and purple mist like pattern that starts around the lower back/waist.
Hinaki Ubuyashiki (産うぶ屋や敷しき ひなき Ubuyashiki Hinaki?) is the oldest daughter of Kagaya Ubuyashiki. Along with her twin sister Nichika Ubuyashiki, she stayed by his side and died with him.
Similar to the rest of her family, Hinaki had pale skin and large, purple eyes. She had white, shoulder-length hair styled into a blunt bob with bangs and sported a red ribbon on the right side of her head.
Hinaki was usually seen wearing a dark blue kimono decorated with purple flowers and a maroon obi, nearly identical to her twin sister.
Hinaki was usually very quiet, but kind. She loved her father very much and was loyal to him even to the point of dying alongside him.