Satou and his delusions, lol. But damn this manga doesn't mess around showing more nudity than I've ever seen in a manga before.
That was some good self-control of Satou, not entering into an affair with Senpai. So this episode confirmed something that I was wondering in the anime, whether her asking whether they should have an affair was real or another of Satou's delusions. Seems like this says that it was a real, serious question.
Also, Misaki at the end though... Misaki seems like much more disturbed here than in the anime. She's a bit scary,