Manga by author Nii Satoru

Protect the city with that fist! Bad high school student, the legend of heroes fighting cherry blossoms! The deviation value is at the bottom, and the fight is the strongest. Wind chime high school, a high school famous as a super bad school. This spring, Sakura Haruka, a first-year student of wind chime high school who came to the town aiming for the top of such wind chimes, learns that wind chime high school was a group that protects the town named "wind chime" (bow furin). And Sakura decides to start fighting to protect the city as a member of the wind chime.+