[ True, he does remember that bit about there being Mafia. That does do well to capture his attention again. The Yokohama he knows, though still bustling with life and activity, was really just a regular city. It's probable that they not only come from different worlds, but the same version of a different country. His curious mind can't help but travel to questions like 'Is that a parallel universe?' or 'Will there be a different version of myself there?' ]

If you came from my world, you would already know that from just hearing my name, because my serialization is very popular. Do you know of Shonen JUMP, at least?