Imagining what would happen, it doesn't matter.
Just a waste of time.
Rex was trying his absolute best to keep those around him alive, and if there were more bodies that needed to be dropped—then he'd stack the consequences above Kaiser's name. No matter what Kaiser tried to do, he could do a lot worse.
Because in the end, he knew that he would win.
Becoming a Scion of Vertex of the Anger Stratum made it blatantly clear that he was destined for more.
Kaiser is nothing but a stepping stone.
His resistance would ultimately fail—all he was doing right now was dictating how painful his death would be. Right now, the destruction of his realm was already sealed. In the near future, if he did worse things, then death might not be his end.
Rex would find something worse.
Perhaps he would strip Kaiser's divinity and turn him to a mortal.
