Mitsuhiko, who had been reconstructed from his company and had a divorce countdown, slipped at a sex shop, hit his head and became unconscious. When he woke up, he had his 46-year-old soul, but inside his 16-year-old body! Being in 1986, he also encounters his first love and classmate, Satsuki, and Yukiko, how will eventually become his wife. Mitsuhiko thought that this was a dream, but he realizes that he is still in pain from being hit, so he decides to start his life again.