Ep. 15: Block A battle royal in the spherical Destroyer Dome features Tsubasa, Toby, and Zeo against the Garcia siblings.

The match begins with ten participants in the 360-degree arena. Selen and Enzo initially attack Tsubasa’s group, but alliances shift rapidly. Tobio defeats two amateurs, while Argo knocks out Selen. Enzo is saved by Toby and Zeo, only to betray them and target the Garcias. Tsubasa intervenes to protect Zeo from Argo. Enzo blocks Tsubasa’s attack on Ray Gil, resulting in Enzo’s elimination. The field narrows to Tsubasa, Zeo, Toby, Argo, and Ian. Argo and Ian team up against Tsubasa, prompting Toby and Zeo to assist, creating a three-on-two dynamic. Both sides unleash combined special attacks, generating a massive light sphere. Ray Gil and Cyclone Herculeo are eliminated, removing the Garcia siblings. Tsubasa, Toby, and Zeo win Block A. The Garcias exit crying, but Masamune realizes their tears were a deception and becomes angry. Toby and Zeo encourage Masamune for his upcoming Block B competition.
Episodes
- Ep. 11 · The cosmic tornado phenomenon unfolds in this narrative segment
- Ep. 12 · The finals of the Gateway To Success tournament feature a clash between Gingka, Yuki, Aguma, and Bao.
- Ep. 13 · Aguma and Bao depart the tournament while Tsubasa and Ryuga clash at the Tower of Babel
- Ep. 14 · Aguma Meets Black Sun While Gingka Tracks a Legendary Blader to America
- Ep. 15 · Block A battle royal in the spherical Destroyer Dome features Tsubasa, Toby, and Zeo against the Garcia siblings.
- Ep. 16 · Masamune and King face Jigsaw and the Russian Team in a chaotic Block B battle royal.
- Ep. 17 · Final Sphere 360 Battle Royale and King's Legendary Power Revealed
- Ep. 18 · Gingka navigates a dangerous maze in Africa while separated from his friends
- Ep. 19 · The group navigates Mist Mountain's traps while Kyoya battles Aguma to open the final gate.