Dumb and Cute Devil, Harsh and Gentle Yamada.

A drunken devil seduces a handsome man. Mephistopheles was supposed to be an elite demon, but he ended up being a super super super dropout. When he was about to fail, he went crying to his teacher, who told him to bring him the tears that humans shed for him... and so he went to the human world. There he discovers alcohol, and one day while drinking profusely, he accidentally crashes into the house of his next door neighbor, Yamada. The two end up meeting. Yamada is harsh towards the strange Mephistopheles, but he gradually finds himself drawn to the cute and silly Mephistopheles... A romantic comedy with a happy ending between a demon and a human!