Identify Merwoman nip slip identification from image

[Digteren]

Any assistance would greatly appreciated. The person who sent this either can't or won't say where it's from.
Admittedly I'm not even certain it's from a game.

 

[TheBlueKnight]

Spoiler: Roundscape Adorevia according to a lot of sites cover image...

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[Digteren]

I need to brush up on my image search fu because I got nothing

Appreciate it