Damn nice game. It's not one of my favourite here, but the concept is pretty cool. I think the fast day and night cycle is symbolism of how fast the days are passing by in the real world when he got into an accident. It's pretty cool take on the theme. The Visuals were striking and unique.
I would focus on the movement because it felt hard to control the player(especially the jumps). And I don't think this parkour can be done https://prnt.sc/sscvf0. When the tile lifts up , the rest of the tiles are still closed in the cube shape and when the player's head collides with the bottom, it glitches and throws you off down.