I find it incredibly tiring that Manga seem to consistently portray boys as either sex-pests bordering on rapists (to outright rapists), or complete herbivores who have a mental breakdown at the slightest hint of anything even remotely sexual.
If it's at all a reflection of Japanese society and that men are indeed that polarized, then it sounds like a hellscape.
Have you seen the birthrates there? And most women don't seem to like the players that much either, so there's almost nothing going on.
Kinda proud of Aino here, she didn't really force anything on him, but she wasn't just lying there either, and showed what she wanted.
I can't remember the last time I saw a manga where a situation like this didn't either immediately fizzle out, because both parties stopped immediately, or didn't go straight to fulfilling Shinzo Abear's wishes. This is a nice middle ground.