Well, I really didn't expect you to kill Sokka, the truth is, now I'm more curious how you are going to finish this fanfic author.
Pd:good chapter.
Pd2:more chapters please
So Katara did not use or could not use the special Spirit water?(she should have It after the north pole),or maybe soka is Alive and they separate and Katara was just acting(using the emotions from soka almost dying)