i beat konquest a week or so ago and i'm now just following a faq on the internet to find the rest of the stuff i've missed. (various alt costumes and shujinko fight moves.)
however as i was just now running through earthrealm, i saw a boy come out of a hut dressed in a green robe thing that looked very similar to someone in the beginning village. he came out of the hut that the old lady tells you someone keeps trying to get into at night. the boy came out of this hut, and started running away like crazy. i tried to catch up to him, but he ran behind a tree and when i got around the tree he was completely gone.
i thought this odd, but didn't think much of it.. eventually i went to chaosrealm in search of another shujinko move. right when i entered the realm, i looked to the right of that first teleport pad and someone was vanishing away with the smoke puff vanish method. i didn't see who it was, because by the time i looked in that direction, the person had already disappeared and a puff of smoke was all that was left.
I don't know what's going on because this is the first time i've seen anything like that in either realm, long after i've beaten konquest. if i see any other weird disappearances.