The Japanese team has advanced to the finals of the U-17 World Cup, setting the stage for a decisive confrontation with the powerful Spanish team. Before that championship match can begin, however, a new internal battle commences to determine which players will represent Japan on the court for the final and most important match of the tournament.

The narrative focuses on the selection process for the finals members, where the stakes are higher than ever. Ryoma Echizen, the prodigy who returned from America to join the Japanese U-17 training camp, remains a central figure as he strives to earn his place among the elite representatives. He is joined by the roster of talented middle school players who have advanced through the camp, including the former captains of powerhouse schools such as Kunimitsu Tezuka, who has his own evolving path after experiences with the German team, and other standout players like Eiji Kikumaru, Shusuke Fuji, and the formidable Seichi Yukimura.

The setting remains the intense environment of the U-17 training camp, now refocused on the final selection trials. The conflict arises not from external opponents but from within the Japanese team itself, as players compete directly against one another for the limited spots on the finals roster. This internal tournament forces teammates and rivals to face each other in high-stakes matches that test their growth, techniques, and resolve. The narrative arc of the finals member decisive match serves as the direct lead-in to the championship match against Spain, with each victory or defeat reshaping the team composition and setting the stage for the ultimate international showdown. The outcome of these selection matches determines who will carry the nation's hopes into the World Cup finals.