Shinichi Gomi

A boy in Sana's 6th grade class. He had long hair, but his father makes him shave it all off when he starts middle school. When Akito decides not to terrorize the teachers anymore, Gomi decides he will be the leader, but gets beat down by Akito (with Sana's one-time permission). In a story arc that showcases Akito's integrity, Gomi rebels against his parents who pressure him to attend a prestigious middle school. Gomi beats Akito up with the help of older delinquents, and shoplifts, letting Akito take the blame. He later confesses and apologizes to Akito. Gomi is often paired with Hisae.

(Source: Wikipedia)