A millennium later, he has become a legend in this world.
Vassal kings divided the land and waged chaotic wars, while dark forces made a comeback.
Secret Mark Warriors rose generation after generation to resist, just on the brink of seeing the dawn for humans.
Sorcerers, through sacrificial rituals, summoned a Devil Army from Hell.
This Devil Army, known as the [Murderer Legion], recklessly harvested souls.
Establishing a brutal reign here, they enslaved the human race.
...
In a dimly lit small tavern.
The Ash Knight and Laplace, dressed as mortals, adapted to the local customs.
They roughly understood the modern history of this world.
The Ash Knight frowned.
"Lord Laplace, as it stands, the strongest in this world is at about the Seventh Level. This person is the leader of the Murderer Legion, a Level 8 Devil's human body. Shall we save this world? Without external interference, they might not survive this millennium."
Laplace said:
