Once read a hentai manga about an royal elf that milks humans in her dungeon, she keeps all their juices for herself and ends up getting raped by all the mindless humans later on.
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Not this one?
>>15272880
Unfortunately no..
I see that it roughly has the same story as i described though.
The gimmick in the story i remember is that, the elfs are living off the semen of man, and she is keeping it all to herself.
Thanks for the reply anyhow though