Wind Breaker, 6

Haruka Sakura has moved to Fûrin High School, where the strongest criminals are found. After gaining the trust of her classmates, they promote him to class captain. However, with no time to settle, an unexpected turn of events shakes Sakura's new life. In order to save her classmate's childhood friend, Sakura and her first-year classmates must enter the stronghold of the violent and feared KEEL gang. Will they be able to defend themselves against their enemies?