Nanami, an honor student who attends a school in Tokyo, is a serious student with a strong sense of justice. - He also serves as class president and plans to attend a famous university after graduation. - One day, Nanami notices a delinquent student, Kawagoe, cheating on her classmate, Umeda, and saves Umeda. - ``Umeda'' takes this opportunity to confess to ``Nanami,'' but ``Nanami'' pushes him away, saying, ``That's not what I meant.'' - This incident causes distorted feelings to arise in Umeda, and she summons Nanami to the empty school grounds...