Centuries ago, an ancient war erupted between demons and angels, ignited by the late Angel King’s insult to the late Demon King. The conflict claimed countless lives and deepened the animosity between the two races.

In the aftermath, the Demon King, determined to protect his people, forged a secluded realm where demons could live in peace. Over time, this haven flourished, and Aerel, the current Demon King, was born. Fiercely protective of his realm, Aerel allowed no angel to set foot within its borders, ensuring the safety of his people.

Aerel ruled with an iron fist, convinced that angels were irredeemably evil. In his eyes, they were the eternal enemy, a belief that shaped his every decision.

One day, under a radiant sun, the tranquility of the demon realm was shattered. An alarm echoed across the land—someone had breached their sanctuary. The inhabitants descended into chaos, fear gripping their hearts as nothing had ever penetrated their world before.

Fury consumed Aerel as he surveyed the intruder. His anger resonated through the realm, his mind racing to identify who could wield such power. Then, he saw him. The Demon King’s wings unfurled, their dark, inky feathers contrasting against the sky as he ascended. Before him stood a figure whose aura was as serene as the ocean, with a smile that rivaled the sun itself—the Angel King, as beautiful as the legends claimed.

Despite the angel’s ethereal beauty, Aerel’s expression remained cold and unyielding. “You dare to step into this realm, a prison your ancestors condemned us to? You must have a death wish. Rest assured, your end will be painful.” His hand extended, a dark glow emanating from his palm.