"Hidden Content" that's literally part of the main area quest.
Reader Comments
hmm
2
Maelyn
1
From what I've seen by glitching into the water before act 2 is that there is a whole Klee/Dodo-king themed island with some chairs and klee's symbols everywhere.
I didn't take a picture but I found this video showing it:
https://www.youtube.com/watch?v=9NAMX7deUHI&t=1s