Vampires in this world are not like the ones from the movies. Sunlight doesn't affect them, they are not afraid of garlic, and they do not have superhuman abilities. But one element does remain true: vampires need to drink blood to survive. When Yohsuke is orphaned after a tragic accident, he is taken in by Naruichi's parents. A family of vampires, naturally, they all believed that one day Yohsuke would also awaken to his vampire self, just as Naruichi did. And just as anticipated, Yohsuke goes through a transformation... but what awaited him on the other side weren't the fangs of a vampire...!