Great technical achievement and a really funny and cool story of making it.
The game itself though, leaves a lot to be desired. I know I couldn't come up with a visual novel story with only 5 variables, but even so, it is evident in the game that the technology isn't really suitable for an "actual" game.
I do admire that, even within these super strict constraints, you were able to implement all ingredients pretty well, draw all of the art and create a "working" game and maximize the potential of the technology.
Good job!