Manabizaki Kyou, a dedicated student aiming for Tokyo University and a career at NASA, faces a surprising twist as a transfer student to a once-prestigious high school now overrun by delinquents from neighboring schools. Amidst the chaos of violence and gang conflicts, he unveils his unexpected talent for fighting to protect his study sanctuary. Along the way, he forges bonds with Iwashida, a timid classmate, and Hasuno Nene, a notorious female delinquent, igniting emotions within him that defy explanation for the first time.