Epiphany!
Chapter 258: Epiphany!
For Draco to achieve what he wanted, he needed to sort his thoughts out, and for that, Zero took thing into her own hands to leave him the space and time needed for the grand scheme they were planning.
For Zero to do that, she will have to do the job Draco hadn't, and it was to kill all the celestials left on the first level, and then devour the realm before they immediately move on to the spirit realm that is countless light years away.
It was simple, Zero was a part of Draco; whatever he knew, she knew, and whatever she did, he in a way did. And she was in no way a danger to him. She was a finely crafted wish with no side-effects, and her forte was the knowledge she could get, hide, and her calculations.