fia

Ok so a long time ago I read this really good manga (it’s basically hentai but whatever) and it was about the girl who’s from a different planet (or the future? It was never really quite clear) where there is no sex between people, or there is but it’s only for procreation and not passion. And she goes to earth to observe couples having sex and there’s like a pair of panties she gives this girl, and they turn you invisible to other people when you put them on- also the girl has a thing for doing the deed in public. Sorry, it’s not a lot of details but I’m trying to explain it the best as my memory can allow because I read it so long ago. I really want to know the name because it was damn good lmao also it’s not a BL even though I enjoy those too, this was just a regular smut manga and the main characters are the girl who likes public sex and her boyfriend. I think they were having some kind of relationship problems in the beginning where the girlfriend wasn’t satisfied and that led her to discovering the panties and becoming more adventurous? Sorry that’s all I can remember from it atm. I will post more if I remember some more details. Anyone who can help me find the name of this would be really helpful! Or if you know any manga that is like it. Thanks!