That's a pretty Shiori model.
I like that you can walk on top of the NPCs XD
The UI polish is nicely done.
I'm not a fan of "only up" type games so I only collected 2 of the 3 sunshine coins.

Some improvement suggestions:
- Shiori's position when entering a zone is not reset to the starting point, instead she's teleported to the last position was in. In my case, I fell to the void and the next time I went in, I was still falling for a while.
- Physics are kinda weird. If you jump near an obstacle, you slowly end up climbing it.
Good game!
Edit: I went back into the game to see what happened if I just waited for the storm without having collected all the sunshine coins and it let me go into the "boss fight". I know it's unfinished, but it was funny going through that long long long looooong straight path to finally face the boss and have it end so quickly. Funny ending!