Arata Kaizaki is a single unemployed 27 year old guy who pretends to have a job while in reality is living off his parents’ money while making ends meet using part time jobs. One such day, after drinking with a friend, he receives a message from his parents that his allowance will be cut off. Before he could even recover from the shock, a guy named Ryou Yoake offers him a chance to work as an experimental subject for RELife laboratories and must use a pill that will make him 17 again to attend high school for an year. His expenses would paid off for the year and a job will be offered to him later on. Drunk and cornered, he accepts the job and wakes up to find himself young and handsome again. Thus begins his new school life, which he intends to pass passively without attracting any attention. But little does he know that his friendly attitude is going to affect him and his new friends more than he could imagine.