With her wedding coming up, Iori is remembering her classmate Takeichi, with whom she was not able to have a reciprocated love. While regretting her past with him, she starts having sex with her fiancé, climaxes, passes out, and wakes up to find herself transported back in time to her school days, 12 years ago. In order to marry Takeichi, can Iori get revenge on her 'past' life and change her 'present'?