Genre: Comedy, Drama, Romance
Original Name: Riraifu
Arata Kaizaki is an unemployed, single 27-year-old who has just been cut off from his parents’ financial support. Unable to find a job due to him leaving his previous employer within three months, he is stuck. One night after drinking with a high school friend, Arata meets Ryō Yoake, a man who offers Arata pills to turn him back into a 17-year old so he can redo his life. After agreeing to the experiment, Arata joins a high school class, and meets Chizuru Hishiro, a socially-awkward silent beauty who yearns to have friends. Through connecting with her and other classmates, Arata must find what he lacks to live a happy life in the real world within a one-year time limit.
He is a 27-year-old man with a painful past. He graduated college and started working at a company where a female senpai was being bullied by her male co-workers. He tried to help her but that only increased the bullying leading to the woman rejecting his help and, eventually, her suicide. This tragedy left him traumatized. After several failed job opportunities in similar companies he was working part-time at a convenience store where he was scouted by Onoya An who chose him for the ReLife Project, a scientific experiment to rejuvenate him 10 years and send him back to high school as a student. Apparently, the experiment is supposed to provide a chance to experience youth once again and, in the process, fix whatever’s wrong with the subject’s life. The surname comes from Kaizaki Station.
He is Kaizaki’s senior supervisor, a man of about Kaizaki’s age who is always seemingly cheerful (which fact irritates Kaizaki to no end). He watches over Kaizaki and his circle of friends from a distance and records everything for the ReLife project. The surname comes from Yoake Station.