The man feared by all villains and admired by all assassins—one day, he fell in love!! Sakamoto fell for Aoi at first sight while she was working at a convenience store and promptly retired from his life as a hitman. After getting married and having a daughter, Sakamoto now runs a small shop in a peaceful town—but he has changed so much from his former self that he’s… gained a lot of weight!! To protect the peaceful daily life he shares with his beloved family, the former legendary hitman takes on the assassins closing in on him, one after another. A neo-action story blending the ordinary and the extraordinary—begins here!!