I'm no big brain dev, but thought I'd leave what I thought of the game here!
I really like the music and art of the game! It fits so well with the vibe that the game wants to transmit, and complements the writing perfectly!
The gameplay is also really fluid and satisfying! If anything, there's only two tiny very small little ant sized nitpicks: maybe make the jump a tiiiny bit more precise, like being able to do very veeeery tiny hops. Jumping from ramps sometimes can also be a little tough, but none of these things are game breaking in any way.
I thought the puzzles were simple and satisfying to get through, and the different mechanics were introduced in a fun and dynamic way! The checkpoints were also quite a good touch to avoid frustration, and the difficulty was ramped up quite nicely!
I also really like both the visual AND audio effect that happens when you're inside of a cloud. Even though I didn't stay inside it for too long, it was a tiny but nice detail that I noticed.
Speaking of the chasing section, I really like the execution of the writings being in different directions, almost unorganized, creating a very striking difference from the calmer notes from the first stages. That, coupled with the stage being introduced with no music really helped sell the point that something was up.
In general, I had a fun time with the game! As you could see, the only things I pointed out were very small nitpicks, and that's because the game works really really well, and all of its aspects give it a very specific vibe that I enjoyed. The gameplay is precise, the sound effects and music are comfortable and uncomfortable when they need to be, and the writing is interesting and brings questions about the character, and the only thing that I could consider as a glitch (having the door slam you inside the ground), whilst undesirable, can easily be resolved through restarting (which isn't bad/frustrating in the case of this game, considering the fast gameplay, short level lengths and door locations)!
Really, really good work and very strong submission!