Gokurakugai, Vol. 3 (manga)

While investigating a string of cannibalistic murders, Alma befriends the shy Kanata, a girl who loves eating dinner with him but can’t seem to keep her food down. When she disappears, Alma desperately runs through the dusky streets of Gokurakugai to save her, all the while knowing she’s a maga - the same as the monsters he has vowed to execute.