Avatar: The Legend Of Korra altered reality

A thing I wrote a while ago following the basic storyline of ATLOK's season 4, but with the ending completely changed. There are also a few characters that gradually change the plot, to the point that there are entire chapters that weren't in the original show. I do not own any of the characters, except for Kiriko and Katsuo. This story starts at the beginning of season 4, so here's a recap:

Kiriko - Kiriko is an earthbender as well as a metalbender and a lavabender. She has black waist length hair and wears the earth empire uniform. She served and helped rebuild the earth empire the whole three year timeskip, staying fiercely loyal to Kuvira's cause the whole way through.

Katsuo - Katsuo is an earthbender with dark brown shoulder length hair who wears casual shades of green at the beginning, and the earth empire uniform at the end. She's currently traveling with team Avatar, though she's having her doubts about their morality and is wondering if she's on the right side. She's also missing her sister Kiriko terribly.