DxD: System of the Harem King - Chapter 299: Demon King Class

The world is made up of the five elements, and it could be divided into Yin and Yang.

Beneath the heavens, on the ancient divine center continent, billions of lives thrive in the prosperous era of the cultivation.

Across its vast lands, happiness, sadness, reunion, and separation played out in the long lives of those seeking immortalhood.

Light is always accompanied by darkness, and under the radiance of the heavens, there are silent shadows moving about…

- Description from Novelupdates

The world was hit by an abnormal narcolepsy, and there was a mass coma. Lee-joonhyuk was transferred to a dimensional battle field as he fell into an abnormal narcoleptic sleep. This is the story of him as he starts as a minion.

“Will you marry me?”As a metaphysics master, An Yan was humiliated by a rejected marriage proposal.She turned around and grabbed the man with the best fate in the entire room to propose to him.“Miss An, you'd better not regret this!”In the blink of an eye, the hunter became the prey, and An Yan was a bit panicked.She was truly cherished, but it was a possessiveness-driven affection that An Yan did not want.It wasn't until he fell ill.That she realized what was called deep affection was just a conspiracy.Everyone says he is the Li Family's deity! Because of him, the Li Family flourished with riches and glory.In reality, he is the Li Family's demon! He could potentially drag the entire family to irreversible doom at any moment.

Five years ago, humanity’s strongest Tower Climber was betrayed at the peak of his conquest.Rael Arden, known only by his codename Phantom, was the silent genius who cleared impossible floors, crushed monsters with forbidden magic, and shaped the rules of Tower exploration. No one had ever seen his real face—yet his legend was feared across the world.But at the Tower’s summit, the teammates he carried to glory stabbed him in the back. For power. For godhood. For fear of what he might become.They thought he died.They were wrong.Reincarnated in secret, Rael awakens in a modern world that’s on the edge of collapse. Dungeons bleed into cities. Monsters evolve. The Tower is no longer just a gate—it’s infecting the world. And the very ones who betrayed him now rule from the shadows, hiding behind titles, guilds, and lies.But Rael isn’t alone. His soul split across hidden clone bodies, each designed to infiltrate, gather information, and prepare for war. As each clone reawakens, his power grows—and so does his rage.With him are three women tied to his fate:Selene, the shadow rogue who never betrayed him.Lyra, a curious researcher drawn to the legend of the Phantom.Aeris, the sword saint who still mourns his death… and may not be as loyal to the enemy as she seems.Now, Rael hunts the seven betrayers who destroyed his past.One by one, they will fall.But revenge is just the beginning.Because deep within the Tower, something else is waking—an ancient force that even Rael feared. And this time, the world may not survive unless the Phantom reigns again.