River of the Underworld!
This is the great power wielded by Lady Moon, the source of the Death God.
It flows through the Spirit World, without beginning or end, and only the dead can enter it. Believers in Death believe that their souls will reach God's Domain through the River of the Underworld after death and be reborn!
The newly appearing black-robed [Emperor of Disaster] of course cannot wield control over the River of the Underworld, even if it's just a minor tributary!
What he has summoned is just a shadow of the River of the Underworld, borrowing just a hint of its power.
Even so, it is enough to obliterate any Fifth Level Professionals!
This is pure Death power! That can dissolve everything!
After doing all of this, the Emperor of Disaster clad in a black robe glanced in the direction of the church officials, let out a roar, and disappeared unwillingly into the void.
"He is indeed a myth-level occupational person on the path of Death... Has he noticed us?"