You are Ms. Servant.
Hitoyoshi, a high school kid who lives alone, hears a knock on his door. He opens it to find a girl offering to be his maid, but she has a dark past as an assassin. Despite this, Hitoyoshi takes her in, leading her to newfound emotions.
Starring
Toshiki Kumagai,
Reina Ueda,
Eriko Matsui