Arata Kaizaki is a 27-year-old loser. While struggling to get a job, things have not been going well for him. When he meets a member of the ReLife Research Institute, he’s offered a strange pill that could give him a chance to pull his life together. Without a second thought, Arata takes it. But waking up and looking like he’s 17 again is the last thing he expected on his path to change!