Sera Rokudou

A quiet, enigmatic high school student from Tokyo is discovered by Aoi Misato on the streets, displaying unsettling supernatural abilities manifested as slashing energy from her wrists. Initially appearing docile, she is later revealed to be responsible for horrific acts, possessing similar demonic powers. After a conflict, she loses her memory and finds refuge with homeless men, demonstrating a shift from a dangerous entity to a less threatening individual.