Yuiko Kubozuka is a high school girl who loves animals. Unfortunately, animals don't like her and flee away from her whenever she comes near. One night, while trying to save a runaway cat in a tree, she meets a boy with wild hair and scary eyes who saves the cat. The next day, that boy turns out to be Yuiko's new transfer classmate, Leo Aoi. She finds him to be funny and not scary at all, while everyone else feared him because of his appearance. This makes Leo very happy. But there's a secret hidden within Leo. What will happen to their relationship?