Retreat

That is why when Death Monarch was absent from Pandemonium for almost six years, before the Multiversal Convergence happened, nobody attacked Pandemonium and like they expected Death Monarch survives and return even stronger

Azief does not know this but many people refer to Azief having the protagonist template. Throws problems at him and he would come back even stronger. 

He disappears…. that means he is going to come back stronger. Nobody wanted to be the young master that is going to be slapped in the face

Once is enough. And people are not stupid nor do they lack the instinct of preservation. Death Monarch is not simply a man in the eyes of many

He is a God and Pandemonium is his Paradise. And Pandemonium itself has grown big and powerful that it could meddle in many of the world matters even without relying on Death Monarch power.