Hello! I'm glad you're playing the game for a lot of time.
I would suggest taking a look at their cards, and their TIPS. And you'll see NSFW content depending on the girl. For example, Lucy gets NSFW content at level 8
And make sure to level up the other girls too, this is not a game where you pick a girl and go with her. You need to level up the others to continue the story. I think in an hour of gameplay you can get an NSFW scene, with Shino. The blonde girl. To unlock that girl you have to level up Fara and then complete a quest.