"IT WAS RAEP!!1" jokes aside, as a serious response, I can kind of see Hisao exploiting the situation in the ero scenes, but not to the extent of trying to elicit sex out of the girls outright. Not the girls themselves, of course, just the circumstances, especially in the case of Rin's last scene, in which they agree that he's just drying her off from the rain, though they both kind of know what's going to happen anyway as soon as the clothes come off .
Well then maybe Rin should have "pushed" Hisao off of her hohoho.
Jokes aside, I hate you for writing in a way that I can't stop reading, that horrorstory is scarring my mind.