I really liked the cubes, a lot more than I expected actually. They were cute and the visuals as a whole really worked for this. Music and sounds were also good. A few minor pieces of feedback but nothing that affected my enjoyment:
a) Perhaps proofread for things like capital letters? E.g. straight away lower case 'i' was used instead of 'I'. Generally my eyes skim over it but I think in a story-driven game it can ruin immersion a bit as it makes it feel a bit less polished (totally understandable for a jam though).
b) The first time I spoke to the mirror I absolutely jumped out of my skin. This isn't necessarily an issue but before that it felt like a happy cozy game and I wasn't expecting the mood whiplash so it put me on edge a bit.
c) When I was talking (e.g. to the little orange guy) I found the controls a bit awkward. E.g. I press the key to go 'next' after each piece of dialogue but then have to switch to e or q to respond. Sometimes I accidentally pressed next and I had to start again. I think it would be good to block this from happening and force 'e' or 'q' and maybe a separate key if you want them to be able to end dialogue without choosing an option. This is all more for if you were wanting to turn it into a full game though.
Overall an interesting game. There was a good story, good characters and I really like that it was an RPG. An interesting take on the theme. Great job!