i got a bit confused at first by the character facing down, and went that way, until i found the great green void, not sure if there was something in that direction at some point.
Then i went up and finally reached a tree with some kind of thing on its trunk, i tried interacting with it, a black box appeared, but then didn't seem to be able to do anything.
The graphics are pretty and the whole ambience/music are nice and chill.