Despite their baseball team making their first appearance in the National High School Baseball Invitational Tournament, the plagiarism of their school song was exposed during the school anthem's singing. However, third-year baseball team reserve member Ryo Katase remained oblivious to the situation, continuing his pathetic days even being bossed around by his underclassmen. Then, one day, as he gazed at his crush, Nagano-san, his classmate Kotaro Yomogida fell from above…!? A pathetic 17-year-old tries to take over Koshien with rock music…!? To survive his hopeless everyday life, at least let out a roar! A 1% pure rock manga begins its rebirth!!