Davidham_

In a world where magic reigns supreme, Ethan Baron , the frail third young master of the prestigious Baron Family, is considered a failure. With his elder siblings excelling in combat and sorcery, Ethan is ridiculed and dismissed. But on the night of his tenth birthday, a forgotten truth resurfaces—he is the reincarnation of the Heavenly Demon King, the supreme ruler of the Murim universe. Along with his memories, he unlocks the Heavenly Demon Magical King System, a power that defies the laws of this world.

Armed with knowledge of martial arts, demonic cultivation, and his new system, Ethan embarks on a path of vengeance and dominance. As he navigates noble conspiracies, clashes with arrogant geniuses, and defies the gods themselves, he will prove that the weakest can become the strongest—and that the world will once again tremble before the Demon King.

Reborn Heavenly Demon

Ethan clutched his head, his body trembling as the past crashed into him like a raging storm.

Memories of battles, betrayals, unshakable loyalty, and absolute power surged through his mind. The name Cheonma Wang (천마왕)—the Heavenly Demon King—resonated deep within his soul, shaking the very foundation of his being.

The rise of the Cheonma Sect (천마문, Cheonmamul).

The fall of righteous sects beneath his blade.

His sworn brother, Baek Seong-joon (백성준), the Dark Spear Lord (흑창군), laughing beside him in battle.

His most devoted disciple, Seo Yerin (서예린), the Scarlet Moon Demon (홍월마), vowing to carry his will.

And the heavens, striking him down in the end.

It had taken the combined might of all the righteous factions, the divine clans, and even the Heavenly Court to stop him.

The memories settled, and his mind grew still. His weak body slumped against the chair as his breathing evened out.

[Heavenly Demon Magical King System Activated.]

[Synchronization: 30%... 40%...]

Ethan's fingers twitched. He could feel something awakening within him, something that had been sealed away for far too long.

He exhaled slowly, sensing the faint stirrings of an ancient power coursing through his frail body. It was weak, barely noticeable, but it was there—proof that his past life was not a mere dream.

A translucent blue screen appeared before his eyes, filled with unfamiliar symbols before shifting into clear, readable text.

[Heavenly Demon Magical King System]Name: Ethan Baron / Cheonma Wang (천마왕)

Synchronization: 45%

Physical Strength: Extremely Weak (Improving)

Martial Arts: Sealed (Unlockable)

Magic Ability: Below Average (Potential Detected)

Abilities Unlocked:Demon King's Insight (마왕의 통찰) – Allows the user to perceive emotions, hidden intentions, and weaknesses in others.Basic Body Reinforcement (기초 체강화) – Gradual improvement of physique.Ethan's breath hitched.

The system, his past life, his powers—they were all real.

His eyes burned with newfound determination.

For ten years, he had lived as a weakling, a disappointment, an insignificant third son.

But he was Cheonma Wang, the man who had once ruled Murim with an iron fist.

And he would rise again.

The Awakening of the Heavenly Demon King