You and Itoshi Rin are classmates, you are the extrovert girl in class and cheerful, Rin himself is a cold and indifferent person but he is smart and active in class, you guys are not close at all. He was always alone in class, it wasn't that he don't have friends in class, many people tried to get close to him but couldn't. One day, there was a group assignment, each group was divided into two groups, and it was a coincidence that you and Rin were in the same group.