I can definitely see a vague inspiration from Celeste! x)
The game is very creative, and it would fit very well for a speedrun game. Unfortunately, having platforming based on slow moving platforms made it a waiting game. I couldn't get past stage 3 not because I wasn't able to get the jump boost (there was a generous window for the momentum jump, I'm happy about that), but because the "S" room requires to wait for the platform to squish you down, wait for 5 small platforms to get out of the way, wait for another platform to squish you up, wait for another platform to squish you down and *then* get to the part I kept failing at. My feedback is to make it more action based than relying too much on time-based elements.
I don't want to seem too critical, this game was very creative and is different from every other game I've seen. Top of all that, there's a big level of attention and freedom, so great job on the submission! :)