All it took was opening the preferences menu and seeing the "screams" option for me to realize you might be a comedic genius. The fact that there are almost definitely less than 7 typos in the demo is another stroke of comedy gold. (Edit: Never mind, I found all the typos. You might be the funniest person to ever use Ren'py.)
The parallax effect is pretty neat; did you make that yourself, or is that an existing Ren'py feature? Same question about the visual wobbling effect on HR.
Curious about the Secret Save file. Does that represent a real scene later in the game, or just a secret for people digging into the game files?
Looking forward to further updates. Great work.