Ep. 24: Sinister Shadows

24

The Duels at "Sargasso the Different Dimension Battlefield" continues. To defeat Vector once and for all, Yuma and Astral attempt to use ZEXAL. Unfortunately, Vector's words cause Astral was attacked by the darkness then turn on Yuma, which they fused them into Dark ZEXAL instead, while Shark and Kaito are further driven back by "Sargasso". (Source: Yu-Gi-Oh! Wiki)