Really endearing little game! I feel like you knew you wanted to make a small game, and didn't overscope. It comes across as a very polished product with great art in and outside of the game (i.e. cover picture, itch.io page, etc.) The tutorial was nice but imh should have been in the game proper, especially given that a matching game is normally controlled by a mouse rather than by controlling one character.
The touch of story really makes the game stand out, and putting "[space]" was a really unobtrusive way to show the controls in that section.
All in all, really really good job! This game is a masterclass in being simple but very well executed.