Although Osu!! Karate Bu gained popularity in Japan, it failed to capture the interest of Western audiences. Nonetheless, it remains highly regarded as the finest example of 'delinquent shonen manga', influencing many subsequent works and being parodied by others (e.g., Cromartie High School). Initially, the tale revolved around Matsushita Tadashi, but Takagi Yoshiyuki, a supporting character, eventually eclipsed him in popularity, resulting in the manga's focus switching to him as the primary protagonist.