The Land of Abstinence

They say you’ll be cursed if you don’t keep your purity…?! I opened my eyes underwater, surrounded by splendid, historical-drama–style buildings. This has to mean I’ve been possessed and thrown into the world of a story! And since it’s the kind of genre I loved, I know all the rules by heart! But wait… I thought I’d fallen into a 19+ fantasy… and now you’re telling me I’ll be cursed if I ★do it★?! In the middle of this absurd situation, I’m supposed to help the second male lead find love. Can I really succeed in this mission...?