I like the little Shiori animation and the music.
The time stop power needs to be explained better. I found out it only works when very close or above a platform and not from the side. It would be great if the range was better explained.
You should also consider adding a countdown timer on the elements that are affected by time stop, so that the player knows how long they have before the effect runs out.
Finally, make sure you give the player a way to exit the game or return to the title screen mid-game. I don't understand why you've set your game to not display the window's title bar.
Good job on submitting your game to the jam. I hope you keep working on your game with more levels and a more polished presentation too.