Kingdom of Innocence

I opened my eyes underwater, then found myself in a dazzling palace straight out of a historical fantasy. There is no doubt about it, I have been isekai'd right into the world of a novel. And lucky for me, it is even the genre I loved the most, so I know all the rules. Or so I thought. Because in this world, instead of gaining power through intimate encounters, anyone who loses their virginity becomes cursed. Yes, cursed. In a supposed mature fantasy. How does that even make sense? While I am still trying to wrap my head around this ridiculous twist, I receive my main mission: help the story's second male lead achieve his destined romance. Avoid curses, dodge questionable situations, fix the love plot, survive the chaos, all with my purity intact. Can I possibly complete this mission without destroying the entire story, or myself, first?