Before the chaos times arrived, mortals often had many complaints.
Complaints about harsh Life, complaints about hard work, complaints about hopeless future... but after the chaos times, they often stopped complaining.
"As long as we can survive, why worry about all the chaos..."
At the moment when large cracks appeared in the Three Realms of Heaven, Human World, and Hell, they all turned into Hell.
The most tragic is actually the "Human World."
The Foreign Domain invaders appearing in the Earth Realm are far less powerful than those on the frontline battlefield, but in the "Peaceful Ranch" of Earth Realm, they are the Great Demon King that cannot be resisted.
Tragedies are happening at all times, a massive number of Life deaths; this is the entire world's blood-making mechanism. If they are completely eradicated, the collapse of the Underworld and Earth Realm is only a matter of time.
More directly, it shattered the "Soul Cycle" of this world...
