Kanchi

is a young boy, the son of Kokushi.

Kawaki Arc
Kanchi had fallen ill to a plague that ravaged his small village, with his father Kokushi tending to him. Boro and his cult arrived to the village with the intention of saving them, with Kanchi's father distrusting the outsiders. Boro "healed" Kokushi, who asked him to heal Kanchi as well.