A bully at Karakura High School who tried to force Ichigo Kurosaki to change his hair color. When Ichigo refused, he decided to teach him a lesson by beating him up. However, a timely assist by Chad ended in Oshima's defeat. Reiichi also makes a brief appearance watching Don Kanonji's TV show, witnessing Ichigo rush out on camera. He never appeared in the anime.<br /><br />