I have both good and bad news for you lot.
The bad news is that this fic is going on hiatus for a few weeks at most.
The good news is that I am actively writing an even better fic called Time Dilation.
It takes place at the end of 3rd NM where Sunny manages to run away to the Shadow Realm, but due to the nature of the Estuary and how it exists outside of time, he got transported to a version of the shadow realm where time works wonky, he walked for millennia in the shadow realm, until he gave up on life.