No incest tag?
Tho the "slutty(?) older girls" makes me think it's either bait and she's just using toys/alone rather than having a guy friend over
Yeah it feels like a bait and switch, there's also no vocalizations from the dude she's allegedly banging which... I mean I guess some guys are that quiet during but to say
nothing is p weird. Though she does say "so rough" and "anywhere but that spot" which seems like the 'i don't want to admit i like this' style of dirty talk that you see in japanese erotica ie "this is bad" and such. Could be just a fantasy but I think it's kinda borderline on whether you would say that to yourself.
I'm having a hard time with this even being a point of confusion though because... mc states he couldn't sleep because he was so focused on what was going on. So wouldn't he have either heard a guy leave, or not? It's not explicitly stated. So either it doesn't matter because he did hear a guy leave and it wasn't worth drawing panels for. Or there wasn't a guy, and he is a brainlet for not putting together the fact that the guy she was supposedly with vanished into thin air.
So which is it going to be? Porn-logic bait or "ntr" (i can't remember what it's called when it's not actually ntr because they aren't in a relationship but the mc likes the girl)?