Kokushi

is a villager who joins Boro's cult.

Kawaki Arc
With a disease plaguing his village, Kokushi tends to his Kanchi, who had fallen ill. Suddenly, Boro and his cult arrived to his village claiming to save them. Kokushi himself had been infected by the disease and is not trusting of outsiders. To prove themselves, Boro "heals" him, his son and the other villagers. To escape poverty, Boro convinces Kokushi and the other villagers to join his cult in order to relive the experience of the Infinite Tsukuyomi from a decade ago.