I am wondering about the legality of buying something like this thoruh one of the Japanese shopping services. Since this is software, and that is usually covered by a non-transferable license... and at the same time, it's not like the people at the shopping services are actually installing it and using it... but how to prove that?

I've used Japanese shopping services a few times, but only for tangible items. Never for anything virtual.

As far as I know, moetan is a clothing pack /character pack for NearMe. And it's adorable!

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.