It has a very nice and polished aesthetic. The bits of voice acting is cool; the voice clips for jumping in particular I found were rather charming. The music is also pretty chill.
To be honest though, I think I didn't get very far into the game, as there seems to be a lot of stuff your page mentions that I didn't see. I don't really want to push through to see them at the moment though, and that's mainly because of the character's movement. It feels... off to me. The base move speed is slow, and no sprint to speed it up makes it feel extra sluggish. Also the character is really hard to control once in the air, which kinda makes thing tough in regards to platforming challenges.
There was some cool aspects to the character though. I liked the dash attack in the air that lets you gain a nice amount of height when hitting a wall with it. The overall movement also has a nice feel to it (outside of the movement speed); feels a little like a Mario game (kinda).
I was taking a screenshot something when the floating cat warned me that I should go back to school, and I actually got kinda scared by the weird whale thing that showed up. My heart was actually racing a bit. I think the bells I was hearing were foreshadowing it, which honestly is really cool and foreboding. The sound it makes when it does appear is also quite haunting. I really like the vibe of this thing, it's great.
I found a boat that took me to some really dark location. I explored a little bit of it, and seeing those glowing jellyfish fade into view to cut through the darkness was kinda neat. I liked the atmosphere provided by the lack of light, but I didn't manage to get very far into the area since I struggled to get past the jellyfish. I'm not sure if I'm supposed to go back there with a powerup or if I can technically do it with the base moveset but the way the movement just makes it difficult.
I couldn't figure out how to get back to the fountain from other side of the gap near the area you spawn at. Had to let the whale kill me to get back to the school.
This game feels a bit too unpolished gameplay wise for me, but I still found it neat. I might come back to it to see what I missed (since I feel like there's a fair amount).