Kaizaki Arata, a 27-year-old jobless man, fails at every job interview he has after quitting his last company. His life changes after he meets Yoake Ryou of the ReLife Research Institute, who offers him a drug that can change his appearance to 17-year-old in order to make him a subject in an experiment for one year. Thus, he begins his life as a high school student once more.

[Source: MU]