Ep. 20: Kai faces Kaoru Komatsubara while Aichi realizes he must fight his own match.

Although Nagisa won, Team Q4 remains in the regional tournament because Kamui argues the group has not lost. With one loss recorded, they must win their next two matches. Aichi grows desperate as his upcoming duel determines the team's fate, even considering fleeing so Misaki could fight instead. Kai warns that cowards are unworthy of battling him. His opponent, Kaoru "Ka-boom!" Komatsubara, boasts of past national tournament appearances. Kai takes an early lead by ignoring most attacks, a strategy Aichi interprets as a signal that he does not need to defend to win. At five damage, Kaoru claims victory, but Kai declares his final turn. He rides Blazing Flare Dragon, retires an opponent with Gattling Claw Dragon, and boosts its power using two critical triggers. This overwhelming force defeats Kaoru, motivating Aichi to pursue his own aspirations.

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