Hey, I remember reading a Futanari Doujin that had two sister's one was female other Futa, and the futa sister gets caught stealing/wearing her sisters panties. So the other sisiter and her friends have sex with her/tease her, at the end of the doujin the sister would keep the sister that is a Futa a secret but ends up telling one other girl, who also agrees to keep it a secret other if she has sex with her. Can any find this/remember this one?