Oroka na Tenshi wa Akuma to Odoru

From far away, Masatora Akutsu has just joined the class in Japan. In fact, he has come all the way from Hell. Akutsu is a demon who has traveled to Earth in search of a person who can inspire Hell's forces to resist the Heavenly invasion. He immediately sets his sights on the kind and beautiful Lily Amane, one of his classmates, but when it turns out that Lily has some of her own secrets, he finds himself in way over his head!