Killer Peter, 1

Peter, a legendary assassin for the Gloria Organization, a formidable criminal group, has hung up his gloves and now lives a quiet life in a small bookstore. Everything changes when he is ambushed to eliminate him and all his secrets. Devastated, Peter is on the verge of death when he sees his body rejuvenate and regain the appearance of his nineteen-year-old self. Back in full command of his skills, the former assassin has only one thing on his mind: revenge!