I like the idea! with some more nuance I think this could be a really fun thing to experiment and find all of the endings for.
I noticed that I was able to preform what I've coined the "Mav exam rent skip tech" by playing games one day before the exam. When I use that option, I'm guessing you accidentally incremented the "day" variable on both the description passage and the result passage meaning every time I select that option, 2 days pass instead of 1. because of this, the check at the hub passage never reaches the specific day of the exam so I skip past it and get to live rent free and exam free forever!