Nanao, Ai

七々尾藍

Ren and Ai are twin first-year sisters at Kouta's school, making their debut in the fifth volume of the novels. They are spirit hunters residing in a very poor temple, often engaging in activities typical of homeless people, such as preparing stew from trash and roadside weeds or eating discarded bread crusts. Initially tasked with assassinating Chizuru, they abandoned the mission because she was still "only a kid". The twins are nearly identical, distinguished only by their slightly different hairstyles, and they employ chains in their attacks.