Serena, Shun, Tsukikage, and now Sawatari, duel the three members of Obelisk Force. In the midst of the battle, Gongenzaka arrives to aid them as well, giving Shun his Pendulum cards to aid in the battle and ultimately prevail against the invaders.
Meanwhile Yuya duels Sora, trying to bring out his good side he believes is still there, but Sora mocks his efforts. In the climax of the duel, Sora and Yuya jump for the same action card in the deciding attack, but the Battle Royale timer ends and the duel ends with no victory. Sora is transported back to the Fusion Dimension, and Reiji confronts the heroes, he and Sawatari explaining the tournament was used to recruit members for the Lancers, the unit Reiji is forming to combat Academia.
And in the midst of all the chaos, back at the stadium, Reira defeats Tatsuya to win the Junior class Championship.
This episode contains the examples of:
- Big Damn Heroes: Gongenzaka interfered in the duel against the Obelisk Force, and makes a move that helped Shun out of a brick hand and ultimately win the match.
- Book-Ends: Sora and Yuya duel again, just like they did in the fifth and sixth episodes.
- Break the Cutie: The show does it again with Yuya, after his match with Sora is interrupted. He learns to his horror that Yuzu is missing.
- Epic Fail: Sawatari's attempt to destroy the Obelisk Force's combo ended with them summoning a stronger monster and halving his group's life points.
- Fighting Your Friend: Yuya's Duel against Sora is the main focus on the episode. Sadly, it was interrupted by the Battle Royale ending.
- Le Parkour: Extremely noticeably in this episode with Yuya and Sora jumping around for Action cards. And in the end they both jump for a final action card before the duel is interrupted.
- Took a Level in Badass: Yuya was able to keep up and possibly win against a serious Sora thanks to his Odd-Eyes Rebellion Dragon.
- Tranquil Fury: Yuya throughout the duel is noticeably calm, but its obvious he's far from happy with Sora's actions.
- Warrior Therapist: Yuya tries his best this episode, jury's out if it had an effect or not.
- When He Smiles: Reira shows an adorable smile after Tatsuya compliments him for mastering many dufferent summoning forms, "just like Declan". It's the first time he doesn't look like a Creepy Child, and he's absolutely adorable.