The art is so pretty! I really liked the music choice as well, and you managed to tell a story without words so very wonderfully. I will say that I did encounter a small bug (I think?) where the character would keep moving even if I wasn't holding down an arrow key. Given it's a prototype though, I think that's entirely forgivable.
The concept behind this story is so genuinely sweet, and I think a lot of people (myself included, if I'm being honest) will find it relatable. I can't wait to see what else you do with it!