The hand-drawn style looks lovely, and the narrative intro has a lot of character (although I noticed a lot of typos, but I wasn't sure if this was because of the protagonist's age). I would've loved to see the ending but I got stuck at some point, looking at the comments I saw that there were doors you could apparently go through, and yeah overall having more indications of what you can / can't interact with or jump on would've gone a long way in making the level easier to explore. (for instance, just having an "E" pop above the character's head when you can open the door, and giving platforms a different color instead of having them gray)
Another small tweak, having a pause menu when you press escape instead of exiting the game would be great, it's a bit abrupt otherwise and I lost some progress that way (although I'm glad I didn't have to go through the intro cutscene again).
So overall this looked interesting and would've loved to get to the ending but couldn't, still a cool setting nevertheless :)