A short sword inscribed with the two characters Kunishunari. The name comes from the hair-carved image of Aizen Myo'ou on the top of the handle, above the inscription.

A festival-loving boy who runs wild, believing in the protection of Aizen Myo'ou. While he is annoyed by Akashi Kuniyuki's overprotectiveness of Hotarumaru, he has a trusting relationship with Hotarumaru.