Rei Batsubami is an original character of the anime's second season. She was introduced as a former member of the Momobami clan, her guide and butler, in addition to being an insurance brought by Terano Totobami in the battle against Kirari Momobami. Her goals have not yet been revealed, although the rest of the clan members think he plans to take revenge on him, possibly due to the disengagement of the Batsubami Clan from the Momobami clan.