The Demon King's Friend

“Today, every demon in the world will vanish.”
For a hundred years, humanity has waged war against the demon race. Now, its last hope of bringing that war to an end lies with the Continental Demon-Sealing Formation.
To complete this final mission, the hero Parte and the Imperial Mage Noah are dispatched to the formation’s last destination. There, they meet Roro, a young shepherd boy, and together, they finally stand on the verge of completing humanity’s grand plan.
Then, on that fateful day, everything changed.