The game's description mentions some guards and a day limit but honestly I didn't see it in the part of the game I could play. (the third mirror room)
I'm sorry, I ran out of patience after having to restart multiple times due to getting softlocked and didn't play the game to the end.
Cute Shiori sprite and nice music.
The puzzles are well crafted. I liked how some required thiking out of the box and fetching something from a previous room, but the game needs a way to prevent or fix softlocks.
Some improvement suggestions:
- There are many places where the player can softlock themselves. I got stuck by double jumping at the far end of the "double jump" room. I suggest adding a way to jump down from the spawned platform, like pressing down+jump.
- I dropped a regular block next to a mirror one in one of the mirror rooms and due to the way the terrain is made, the mirror couldn't be picked up to be taken to the next room where it's needed to progress. Probably could be solved if Shiori could pick up the block she's standing on top of.

- I also managed to throw a block to an upper platform and ended up not being able to climb that platform because the block was uhh... blocking the way.
Overall, it's a good game. Hopefully you can get back to it to make the softlocks less troublesome for the player.