Having already failed, Shunpei is in cram school studying to get into University. By chance, he meets a wild and uninhibited Momoko who has Shunpei twisted around her little finger. It just so happens that Momoko lives in the same dormitory as Sayoko; Shunpei's first love. At a reunion party, Shunpei attempts to get closer to Sayoko but cannot confess his feelings. Meanwhile, Momoko's ex-boyfriend, the elite Doctor Soneda appears on the scene and takes an interest in Shunpei's kind-heartedness. While Shunpei still thinks of Sayoko, a love between him and Momoko begins to grow. When Sayoko is caught in a rumor that she is having an affair with the manager at her work, Shunpei tries his best to help her out. However, he sees Momoko and Doctor Soneda entering Momoko's apartment, and the jealousy makes him unable to trust Momoko anymore.