A Byakko villager. He instructs Tatara, and later Sarasa, in swordplay. He plays a surrogate father role for Sarasa, and she places a great deal of trust in him.

Kakujii originally came from a fishing village in the Tohoku region, but was thrown into Abashiri Prison after rebelling against the Black King, who rules there. He later escaped, and eventually ended up in Byakko Village.