Technically there *are* NSFW sex scenes, but there's (almost) no CGs associated with them, so it's mostly just words that you can gloss through if you need.
Though tbh with all the gut punches this game will give you, NSFW is the least of your worries. Enjoy!
you can skip a majority of them by, telling jenna you're gay before the pre route split, and telling flynn that "this is fucked" on thursday night in his route. the only one that is still in the game is going to be during leos route, and a few instances in flynns route.