By the time the disfigured body of Braxton (real name unknown) fell on the ground, his life is already lost.
And now, both of the lives of the demons were claimed by Azzy.
This is what Azzy and Leah came to an agreement on beforehand. Back during their time in the waiting room, when they are discussing the strategy, Azzy insisted that he will have to be the one that finishes the demons.
Leah knew that he is a necromancer and his necromancy ability will let him gain two skeleton bodies with rank-7 physical strength. So, she made a deal that she will control the Arcana born from the fusion from celestial grade Arcana, and in exchange, whenever, they intend to kill someone, Azzy will take care of the last attack.