Gachirin ni Kiri Saku

A new student arrives with an enigmatic presence, dressed in black and known as Inugami Sakuya. Under the cover of moonlight, she hunts and kills men possessed by "Inugami," a condition spread through bites that causes them to transform into creatures that attack women at night. Sakuya ends their lives with a sword, though she rarely arrives in time to prevent harm to their victims. She also contends with real and personal inner struggles.