Momoiro Sabbath

The story centers around a number of witches. The heroine is Kagome, a low-level witch with enormous strength. Her mission is to kill Tamakichi, a high school student with a demon soul and bad luck. Fortunately, she doesn't succeed. Instead, she begins to like him and becomes his bodyguard. Other witches with more magical power also have an interest in Tamakichi; that is, they want to mate with him because they believe their magical powers will increase when succeeding. Of course, this is something Kagome doesn't like.