[Crossover] Hi! My Name Is Yuki Judai!

Yuki Judai was a half-elf with an exceptionally long lifespan, gained after fusing with a Duel Spirit. After saving the world and becoming the King of Games, he suddenly found life incredibly boring. One day, he had a sudden idea and said to the translucent Yubel beside him: "Didn't you say there used to be twelve dimensions? How about we see if we can travel to other worlds?" Then the two of them gave it a try together, and... hey, it worked! They were certainly happy it had worked... But why did none of these people know how to play cards?! With no one to duel, Judai broke down and let out a loud wail.