Kazunari Miyamoto is a member of Miuradai High School’s basketball team, appearing during their match against Shohoku in the Kanagawa Prefectural Tournament. Although not one of the team’s central figures, Miyamoto contributes through his discipline, effort, and teamwork — qualities that define Miuradai’s identity under Coach Harada. His role on the court emphasizes defense and support play, helping maintain the team’s structure against stronger opponents.

Miyamoto plays alongside teammates such as Hiroshi Takatsu, Akio Kawasaki, Kengo Murasame, Kazuo Araki, and the dominant but inexperienced Naito, whose strength briefly energizes Miuradai before Shohoku’s comeback. While Miuradai initially manages to challenge Shohoku through physical play and aggressive defense, the tide turns once Shohoku’s starting lineup — featuring Rukawa, Akagi, Mitsui, Miyagi, and Sakuragi — takes over the game.

Despite the overwhelming loss, Miyamoto remains dedicated until the final whistle, embodying Miuradai’s resilience and sportsmanship. His presence, though understated, reflects the series’ broader theme: that every player, regardless of status or skill, contributes to the spirit of the game. Kazunari Miyamoto’s effort and persistence highlight the pride of ordinary athletes who compete with heart, even when facing the seemingly unbeatable giants of the Kanagawa basketball scene.