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 enter a famous university after graduation. One day, "Nanami" saves "Umeda" by noting that bad student "Kawagoe" is picking on her classmate "Umeda". "Umeda" takes this opportunity to confess to "Nanami", but "Nanami" pushes "Umeda" away, saying, "I didn't mean to do that." Due to this incident, distorted feelings sprout in Umeda, and he summons Nanami to an empty school.
