Rokudenashi Blues

Rokudenashi Blues (ろくでなしBLUES?, lit. "Good-for-Nothing Blues") is a boxing-themed manga series authored by Masanori Morita that was serialized in the Weekly Shōnen Jump from 1988 to 1997.

Plot
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".