The world above had bowed. The mortal realms, vampires, and supernatural beings all recognized Ethan as the Eternal King, bound to the World Tree, and husband to three immortal queens.
But power like his could never go unnoticed.
Deep beneath the earth, in a realm of fire, bone, and endless screams, the Demon King stirred. His throne burned with hellfire, his aura shaking the Underworld itself.
"The King of Night… dares to rise against me?" the Demon King growled, his voice rumbling like a volcano. "I will crush him… and his precious queens."
The Invasion of the Underworld
Ethan and his three wives descended into the Underworld. The air was thick with sulfur and blood, the sky a sea of molten darkness.
Lilith's crimson flames burned brighter than ever.
Seraphina's frost cooled rivers of lava into black ice.
Aria's golden fire ignited the shadows around them.
[System Update: Underworld Detection Hostile Level: Demon King SS-Rank.]
[New Skill Unlocked: Abyssal Authority Control underworld denizens.]
The Demon King appeared atop a mountain of skulls, massive wings spanning the cavern.
"You will kneel!" he roared, fire erupting from his hands.
Ethan smirked. "You should have thought of that before threatening my world."
With a step, he summoned roots from the World Tree, piercing the lava rivers, turning them to crimson and gold energy.
The Battle of Kings
The Demon King charged. Shadows and flames collided with Ethan's aura. The entire Underworld trembled under their fight.
[System Activation: Cosmic Sovereignty Maximum Output.]
[Skill Unlocked: Eternal Night Overlord All realms under King's control.]
Lilith, Seraphina, and Aria fought beside him, moving as extensions of his will. Their combined powers blood, frost, fire clashed with the Demon King's aura.
The Demon King roared and was about to strike Ethan down when suddenly… a presence appeared behind him: a woman of dark beauty, wings of obsidian, and eyes like molten gold.
"Stop… or I will betray him," she said.
The Demon King froze. Ethan's eyes glowed crimson and gold.
"Your wife?" Lilith whispered.
Ethan smiled faintly. "Looks like we're adding one more queen."
With a flick of his hand, he absorbed her loyalty. Her powers, her blood, and her mind intertwined with his system.
[System Update: New Queen Added Demon Queen of the Underworld.]
[Bloodline Resonance: 45%]
[New Skill Unlocked: Underworld Sovereignty Command all demons.]
The Demon King screamed in rage and despair as Ethan's aura exploded. Shadows, fire, blood, frost, and golden light fused together, crushing his defenses.
With one strike, Ethan shattered the Demon King's throne and chains of his power.
"You are mine," Ethan said softly, placing his hand on the new queen's shoulder. "And you will serve at my side… eternally."
The Demon King's forces fell into submission. The Underworld now answered to the Eternal King of the World Tree and Underworld, bound by the four queens.
The New Underworld Throne
Ethan made his home in the Underworld not as a prisoner, but as a king. The throne was forged of obsidian and crimson roots, the flames of the underworld dancing alongside the World Tree's energy.
Lilith, Seraphina, Aria, and the new Demon Queen stood beside him, their aura combined a power unmatched in any realm.
"The Eternal Night… the World Tree… and the Underworld," Ethan whispered. "All of this… is ours."
The Demon Queen knelt beside him. "My King… I am yours, body and soul."
[System Update: Harem Bond Strengthened 4 Wives Linked.]
[Bloodline Resonance: 50%]
[New Skill Unlocked: Absolute Kingship Power Across All Realms.]
The Underworld itself now thrummed with his power. Mortals, vampires, demons, and gods alike felt the crimson pulse of the Eternal King.
"Let the heavens tremble," Ethan said, gazing over his domain. "Let the world fear… and love us."
The Eternal King had conquered not only the world but the Underworld and now had four immortal queens at his side, each sharing his eternal throne.