There are quite a few things one can improve in this game.
1) Make the color for the ground a lot darker. The main character normally should never blend with background.
2) Imho the font has too much flourish to it, making it hard to read sometimes.
3) Music, while not being bad, could be improved. Mb find a nice heavy piano soundtrack and use that?
4) A few places where the text is a bit off - in a game where the main attraction is the text, this just should not happen
a) "I" should be always capitalized (in one phase it isn't)
b) "am I even existing?" should have been "Do I even exist?"
5) The gliding movement of the character felt quite boring, mb add a slight waddle effect to the sprite to make it look like it is actually walking.
6) The ending came a bit too early imho. I liked those frozen in time scenes from the past life of the main character, having more of those / increasing the narrative part of the game would benefit it greatly.
7) Also an IMHO - delete the "WASD to move" at the start, it feels very much out of place. Alternatively, move the first line of the narrative into a separate room.
Basically, a bit of polish here and there and all over the place can improve the game quality quite a bit.