I sort of assume the same thing, there's IIRC a few lines that imply it though I can't be arsed to hunt them down right now. Maybe in the Steps event.
Haha, I feel the same way - I wish I could share this with friends, I don't know if I'm shallow but I definitely feel some things about this story are profound and unique, but at the same time, it definitely wouldn't work as well if the main themes weren't as... unsavory as they are? And I feel like a good chunk of the game is a subversion of the harem porn game genre -- like, you think you can have sex with all the characters at the start, and there's definitely some shock value in there going in expecting a normal porn game, but by chapter 3 to quote the sonic kid you learn that boy oh boy do your actions indeed have consequences