Someone else pointed out that it feels very Celeste inspired, and I agree, but that's a positive! It's so pretty and polished, also reminds me of Momodora, such awesome games, and even if yours reminds me of those, it still has that uniqueness to it.
Something I'll say is that the platforming can be a bit clunky, mainly how grabbing walls is not very fluid and sometimes the character slips from the corner of platforms. Another thing is that one scene in the castle area where the stage is divided in half, and the camera gets really annoying in case you fall since it goes up and down very fast, it can be a bit disorienting.