I really liked the concept of this game; the story and narration was really good! I enjoyed most of the gameplay, but I think the super thin pillars with a block on top was a little too difficult. Either having the pillars a little bit thicker or having the blocker a little bit higher (even by 1 pixel) would have been a bit easier. I did feel myself get better at that mechanic over time, though!
It would have been nice to have the music be a continuous loop. I think I spent way longer on those thin pillars than you were expecting, so there were some parts where there was no music for me, which made me sad :(
I think the transitions could also be polished a little bit more (some of them took too long, and you could hear the audio restart each time a transition occurred), but for a game jam, that's negligible.
Overall, despite my skill issues I really enjoyed the game, and the storytelling!