That...it's difficult to explain. When I, the man Gongenzaka arrived here, it was following a duel; when it was discovered that time at home would not pass while here, I therefore chose to use at least one year for training myself to be of greater use to the others. [Which can be taken in any number of ways, really.

But Gongenzaka nods-Yuuya's guess is right on the dot!] Correct! In fact, the four dimensions are considered one realm in itself...! When the Carnival visits other realms, they are places far different from our own...places without duel monsters, even!