According to a Japanese urban legend, those who didn’t get down and dirty by the time they hit thirty, will be transformed into a superhero. Mikio Hoshimura is a 29-year-old incompetent pencil pusher at an insurance firm. He’s at the bottom of the company’s rankings. His social life is below zero, he’s got no girlfriend, only tons of manga’s to get keep him warm during the winter. But, on the eve of his thirtieth birthday at a team-building event, he has the bright idea to stand up for the first time of his life against the #MeDon’tCare coolios of his office when they start harassing Akiyama, the company’s newest recruit. If he had hoped to obtain the key to his chastity belt with this, he’s dead-wrong.