So this is something I found like 3 years ago. I have never seen anybody talk about it, so I thought it would be worthy of its own post on this forum :)
So what happens is that in the very beginning of the game, Tetra is kidnapped by the bird and falls into the forest above Outset Island. If...
"Whenever there is a meeting, a parting is sure to follow. However, that parting need not last forever... Whether a parting be forever or merely for a short time... That is up to you."
Happy Mask Salesman
This hits you in the feels ;-;