I am 100% sure the Atlus staff at the time were having fever dreams

If I don't give him the memories right away he'll legit believe that too until NOPE HE WAS JUST THE SIDEKICK

And yeah, I think his family would have made a big deal about the move...we could have them being bros in like earlier internet days maybe? What does Minato do online that they could have a connection earlier until Eikichi hit big time dumb time