Momoi Kampachi, as a child, loved the manga Ashita no Joe and followed his dream to become a professional boxer, but at the age of 24, he was diagnosed with a career ending injury. As hard as it was to turn away from the one thing that he worked his entire life for by sacrificing everything else, it was inevitable. His longtime friend, Oume Hiromichi, who works as an editor at a manga publisher, gets him a job. Kampachi has to restart his life and needs to learn everything from scratch but he brings the same passion he had for boxing to being an editor and fights his way through the corporate world, round by round.