This was a great first VN. Very cute art & music, and the concept is very simple but effective, I like the use of the format of a visual novel to tell a short autobiographical vignette. The ending is a little bit abrupt, but not in a way that harms the overall narrative - I just think a cut straight to the title screen can be a little jarring.
I'm a big fan of the footnotes, I can see a mechanic like this being expanded into a game where a central narrative mechanic is flipping between the game and a compendium of footnotes and / or commentary, à la Pale Fire.