Kimi wa Meido-sama.

Hitoyoshi Yokoya is a young boy who is in high school and lives alone in a huge house. He wanted someone to talk with and do his house holds. One day an unexpected thing happened a girl knocked on his door. She offered him to be his maid but he refused to take her in. sh was a young girl with some attractive personality. She said that she was an assassin in the past. The next day, She saved him from a truck incident and later. He agrees to take her as his maid. She had no experience of this before and never did anything like that before. But by living with him she started to learn new things and became an ordinary girl. She is now able to forget her past and start a new life. Hitoyoshi gave her a new name Yuki and she was now happy with it.