The Hwang Eun Ohaengjin (황은오행진) was a sophisticated sword formation that intertwined the five elements—fire, water, wood, metal, and earth—layered with the depths of positive and negative energies.

At its center, the demon suddenly lowered its head.
As if unaware of the imminent danger, or the precariousness of its situation. At a time when it should have been analyzing weaknesses and finding a path to break through the formation, the demon simply let its head droop, its gaze falling limply to the ground.

And then, it happened.

The drooping head, shoulders, and arms aligned in a straight line. Long, …