Wind Breaker 1 by Satoru Nii

An adrenaline-filled manga set in a high school for delinquents who are now heroes protecting their town. A fierce, new student arrives at the school determined to fight his way to the top and become the strongest of them all. This edgy, action-packed manga is guaranteed to excite fans of Tokyo Revengers and other stories about high school delinquents

Haruka Sakura wants nothing to do with weaklings—he's only interested in the strongest of the strong. He’s just started at Furin High School, a school of degenerates known only for their brawling strength—strength they use to protect their town from anyone who wishes it ill. But Haruka’s not interested in being a hero or being part of any sort of team—he just wants to fight his way to the top!