Noticed something while tinkering with alternative paths (spoilers):
I asked in my last post about the mystery girl being double-teamed during the dorm party. I still don't know who she is, but thanks to a distinctive eyebrow piercing I know that she appears twice more in the episode. She's in one of MC's classes taking a midterm... MC identifies her as "the quitter" using Sage's definitions, and thinks that he hasn't even seen her in class before (or something to that effect, I don't have the screen open in front of me). She then appears again at the end of the episode, buying drugs from Riona.
But paying attention to this likely totally unimportant thing made me notice something more important: Riona is still being stalked. Regardless of your path, whether you've solved her stalker problem or not, there's a shot at the end of the episode that's clearly meant to be someone watching Riona right after this drug deal, peeking at her from behind a car. Now this might be the same guy you can find in this episode still watching her despite promising not to, but I find it more likely that that loser is a red herring, a joke to get Riona, the MC and the player to ease up, when in reality she's still being watched.