Shuji Harima is Kenji Harima's young brother and cousin of Itoko Osakabe. He also has a crush on Yakumo Tsukamoto. He also acts like a punk to Harima. He first appears at the Tsukamoto doorstep as a kid who supposedly ran away from home, but the truth was that he had become infatuated with Tsukamoto Yakumo and wanted to get close to her. While there, he plays some games with Tenma, all of which he wins (Tenma later calls on Yakumo to beat Shuuji at Go, which he has no idea how to play). Sometime after this incident, he helps Harima protect his animals by dressing up like them and pretending to reherse a play. Most recently, we have seen Shuuji attend the Cultural Festival with Tennouji Mio.