That was certainly what I'd call the definition of "short and sweet", ngl. I love the art style, and the music certainly gives an atmosphere. I really love the animations and movement of the player char tho, despite being as simple as an platformer can get it really feels just so good with all the squishiness and such, not to mention the """wave-dash""" is also super fun to pull off, I was pretty much only moving by doing for most of the game x)
I really like the idea of the black and white holes as well, very creative take on the theme! Altought, even if I didn't had much problem with the black holes, the white ones definitelly felt a little finnicky, sometimes they'd pull me way too much (like when I had already passed throught them and was already on the floor, and they'd just pull me back in) and sometimes they didn't at all (Like when I had to swing between one white or black hole to another white one, sometimes it felt like the second one just didn't want to grab me and just left me to fall to actual hell).
I noticed the telegraph for the gravity holes range were those little gems that orbited them, and I also noticed the different holes had different colors as indication, but I need to admit that didn't help a huge lot on the last level in specific, since it had a section where there were a lot of those in sequence so the orbiting gems just kinda blended up with one another and it got a little hard to tell where to go next, so I ended getting throught by pure memorization on that part after dying a few times.
Overall still pretty neat tho.