I actually wrote the whole thing in one go. The night I spent for this wasn't even nearly as fun as I expected it to be.
I wanted to capture Aurelion Sol in his whole sassiness but still wanted to introduce a new side to him. Aka I wanted to ADD something to his story not only to introduce you to some additional information you would forget in two weeks. Most time was spent on the setting - I'm actually surprised I looked up pics of Mt. Targon and its civilization.