"Yeah, it must be," Fang looked around, "as if we are in a way better situation for things to turn ugly… Let's kill as much as possible before things turn south."
The two grasped William's intentions like other top masters perfectly right. William didn't know what Lingerie intended to do, but he was sure of something… She was going to do something that'd change the entire situation.
Just as he was fighting, he kept an eye over her. She didn't delay in making her move, and out of any expectations he had, she turned around and walked away from his direction.
"What do you plan to do?!" William thought she'd go to take care of him, or the den, or even lead her elite guards and go all the way to the forefront and kill his side.
Handling the den or even taking it back would have been the best move to stabilise her side. As for going to kill his masters, it'd be enough to force his hands to retreat and give up on any advantage he got here.