I think overall it's a neat proof of concept and I could see this a fully fledged game if worked upon further!
The main mechanic of splitting your body and ghost to traverse different paths has a lot of potential, especially for non-linear exploration and puzzles.

The platforming can be imprecise and making jumps to the logs was kind of frustrating, but nothing that can't be fixed.

Ubaste has a nice papercraft-y art style, it reminded me a lot of Epistory, but it's very nice and welcoming. I also like the design for the cat creature you play as, it's cute!

Not a bad way to spend 10 or so minutes, especially considering it's free.