The Explosion King couldn't help but recall the scene where he got a report about a neighboring King Class Monster who decided to submit to the World Class Monster.
At that time, the King Class Monster gained immeasurable power and still had the ability to think for themselves.
However, once they messed up, they died with all their cells evaporating because the World Class Monster had changed their body into that of slime. And it could control the body's condition easily.
That was why submitting to him meant giving his life entirely to his control. Of course, if a King Class Monster submitted to a World Class Monster before the apocalypse, they were ready to fight for the Saint to their death.
But there was a huge difference between the normal Saint and the World Class Slime. The normal World Class Monsters treated their subordinates as their people. They protected and cared for them.