Zin Kusanagi appears as a battle racer in the MAX story arc, affiliated with the Borzoi School—an organization employing unethical racing practices opposed by the Ichimonji brothers. He pilots the Vise-Intruder, a competitive Mini 4WD car. Alongside his brother Zen Kusanagi, he forms a sibling duo that races collaboratively, executing synchronized tactics like the "Fire-Thunder Attack" through combination maneuvers and teamwork. He directly competes against protagonists Gouki and Retsuya Ichimonji, acting as an obstacle in key events, including intense 2-on-2 races where his partnership with Zen defines their identity and demonstrates their technical skills and car capabilities.