Sugarless summary: Kujima High School is commonly referred to as Windmill due to the windmill situated atop the campus. However, the school's reputation is mostly based on harboring the most powerful fighters who engage in brutal battles to secure the top spot. The freshmen student Shiiba Gaku is determined to dethrone Aramaki Itaru, also known as Shake, who currently holds the title of school boss. Nevertheless, Gaku realizes that he needs to enhance his fighting skills before standing a chance against Shake. Standing alongside Gaku is his schoolmate, the imposing Afro-wearing Marumo Taiji, who will play an integral role in Gaku's fight for glory at Windmill.