You can't reply in the guide section (I supppose with good reason) but the entry for the silver mirror island event is incomplete.
I had my villager speak "sunimeg" and he was duplicated. I don't remember exactly what the text said, but it was something like "Ayu sees his own eyes in the mirror and then it shatters" And lo and behold I now have two Ayu's, same age, same skill level.

which was pretty cool because he was my only master farmer.