Ep. 15: Raimon prepares for Teikoku while Kidou Yuuto returns to confront his past and former teammates.

15

Ishido Shuuji discusses the Kanto Region Holy Road match at Fifth Sector headquarters before Endou informs Raimon that Teikoku is their next opponent, shocking the team who expected Aoba. Matsukaze shows enthusiasm while Shindou proposes a new hissatsu tactic. Kirino, Sangoku, Hamano, Amagi, and Hayami assist Shindou, but the attempt fails. Shindou and Kurama continue to struggle with the technique. Meanwhile, Tsurugi watches his sleeping brother at the hospital and recalls a magazine article about the Holy Emperor and a past agreement. Teikoku members, including Sakuma and Kidou, observe Raimon’s training. Kidou provides a briefing before sending a text to Endou. Later, Kidou meets Endou and Haruna near Inazuma Steel Plaza, where he remains unmoved by their pleas. Matsukaze finds Tsurugi in room no. 315 talking to his brother, with Tenma interrupting briefly. Matsukaze reports to Endou, who boosts morale by revealing the team’s practice of Ultimate Thunder. On match day, Ichino Nanasuke and Aoyama Shunsuke attend. Despite Teikoku’s relaxed demeanor and Raimon’s missing member and incomplete tactic, Tenma encourages the team. Kurumada warns of Teikoku’s strength. Endou and Haruna converse while Kidou watches from afar, anticipating the match.