With Kotetsu returning to the First League, the buddy system has become HeroTV's major new initiative. This involves pairs of heroes combating crime side by side, inspired by the popularity of the renowned duo Wild Tiger and Barnaby Brooks Jr. As new heroes take up the protection of Sternbild City, the capabilities of both veterans and rookies will be tested as they discover what it means to depend on one another to act in the best interests of the city they are striving to defend.