Rokudenashi blues manga

Rokudenashi Blues summary:

Maeda is a new student in the Teiken High School. He stutters when he's nervous and he's rather clumsy. He gets noted immediately because he hits a teacher during the entrance ceremony. Some clubs search to enlist him as they see in him a force they can use to get even with other clubs. But Maeda is a loner and has only one dream: becoming boxing champion. His first objective is to beat the leader of the boxing club. "Rokudenashi" translates as "good for nothing". Masanori Morita's (Rookies) first serialization, and a true Jump classic. More focused on gang warfare than boxing.