Durch Declan bekommt Yuya unverhofft die Möglichkeit, direkt an der Junior-ARC-Meisterschaft teilzunehmen. Aber Yuya will sich als Kämpfer beweisen – genau wie alle anderen Teilnehmer. Also wählt er den harten Weg und nimmt ein Duell nach dem anderen an. In der Zwischenzeit hetzt Stadtrat Sawatari weiter gegen Yuya.
While Reiji is informed of a large amount of Fusion activity in the city, Yuzu, who is continuing her Fusion lessons from Sora, continues to think about the mysterious stranger, with her bracelet mysterious glowing again before Yuya arrives. Meanwhile, the stranger, who was waiting nearby, is suddenly transported to the middle of the city, where he encounters one of his acquaintances, Shun. The next day, Reiji and Himika discover that Marco, along with another ace LDS duelist, have been sealed inside some cards, believing it to be a different culprit to the one who attacked Shingo. Shingo's father, who still believes Yuya to be the culprit, has some LDS duelists chase after Yuya. However, they are confronted by Shun, who summons the Xyz Monster which traps the duelists inside cards, knocking Yuya out in the process. By the time Yuya wakes up, everyone is gone, leading him to assume it was just a dream, as he goes with Nico to face his next opponent.
Yuya è erroneamente considerato il principale sospettato per gli attacchi agli studenti dell'istituto Leo! Ma quando Yuya incrocia la strada del vero colpevole, le cose andranno di male in peggio!
