The friction between the Celestials and the Hypogeans cannot be resolved unless they specifically did something to settle it down.
While there are the Revenants; a group of chosen Celestials and Hypogeans who could tolerate each other and work together for something both races want, at the end of the day, the two races hated each other at the very depths of their heart.
It could even be said that there will be no peace so long as these two races are at the same place at the same time.
The Chaotic Warzone is an area where the Celestials and Hypogeans fight to the death to settle down their grievances. It is a place of unrest and constant slaughter and destruction.
Bruce, the one who mapped the entire world, and Mr. Slayer, both arrived at this place and saw it with their own eyes. Both Demons and Angels kill each other wantonly. It is a battlefield reserved strictly for them.
