授業をサボり、毎日保健室に入り浸る生徒の杉浦。杉浦は保健教諭の美波に恋心があった。美波はそんな杉浦を見透かし、キスでたぶらかすが、美波への気持ちが溢れ出した杉浦と一線を越えてしまう。それ以来、校内で杉浦への誘惑セックスを繰り返す美波だったが、彼女には転勤の日が迫っていた。

Sugiura, a student who skips classes and spends his days in the school infirmary, harbors feelings for the school nurse, Minami. Minami sees right through Sugiura and tries to seduce him with a kiss, but Sugiura's feelings for her overflow, and they cross the line. Since then, Minami has repeatedly tried to seduce Sugiura with sex around the school, but the day of her transfer is fast approaching.