If you want to polish this a bit after the jam, then I think small things to do that will improve the playability (not knowing Unity, so I may be off):
* Player must push a button before the text disappears from the screen.
* Put in the journal which buttons to use. Not all will read the itch page, so in-game info is better. I had no idea that pressing space did anything. (This may be obvious to unity users - I don't know.)
* Use different colours to show who is talking.
* If possible, implement a way to save or skip over parts you have done already. (I don't know how easy this is in unity.)
I'll try a bit more to get to the ending (there is one, I hope?), but my skills as a platform jumper are a bit limited. :-)