It begins with a nightmare of Aichi's where his friends are locked in a trance and continue to leave him behind. Upon arriving at school, Aichi notices Kourin's absence and decides that the club will meet at Card Capital. Naoki leaves the group to reclaim his belongings only to end up follow the Student Council Secretary to a secret room. He overhears her plot of spying on the cardfight club and stumbles into the room.
With a strange look and demeanor, Naoki arrives at card capital with a thirst to fight the strongest player. He challenges Aichi and demonstrates his newfound power. Aichi and Naoki both push each other hard and the game turns to a clutch when Naoki declares "Final Turn!" His new ace is a Cross Break Ride of Eradicator, Vowing Sword Dragon... Eradicator, Vowing Saber Dragon "Яeverse"! This crossride devastates Aichi's entire field leaving him with zero rearguards. But Aichi successfully guards and survives to his turn, breaking Naoki's Final Turn.
Aichi, with strong faith in his companionship in Naoki, steels himself to defeat Naoki with his own ace... Wolf Fang Liberator, Garmore spirit possessing him was chased out leaving Naoki without any memories. Kai picks up Eradicator, Vowing Saber Dragon, Reverse and it disintegrates in his hands. Meanwhile, back at the secret room, the Secretary speaks to her unknown superior stating that she will continue the "plan"