Staz, a vampire, ranks among the most powerful district bosses in the demon world, repelling anyone who dares to challenge him. Yet, beneath his fearsome exterior, Staz is secretly obsessed with human culture, particularly video games, manga, and all things Japanese. When a Japanese girl stumbles into the demon world, Staz is eager to meet her and learn everything he can about her world. Unfortunately, before he can ask her a single question, one of his would-be usurpers kills the girl, leaving only her bare soul behind. Staz vows to help the girl restore her body and return to her former life—a mission that also allows him to travel to the human world himself.