Honor student “Nanaumi” who attends a school in Tokyo is a serious student with a strong sense of justice. He also serves as the class president, and plans to go on to a famous university after graduation. One day, “Nanaumi” saves “Umeda” by noting that the bad student “Kawagoe” is smashing his classmate “Umeda”. “Umeda” takes this opportunity to confess to “Nanaumi”, but “Nanaumi” pushes out “Umeda” saying “I didn’t mean that”. In this case, distorted emotions sprout in “Umeda” and call “Nanaumi” in the empty school.