Location: Earth-828 – Xavier's Hidden Citadel
The world was burning.
But not from war—from evolution.
Across this timeline, humans were no longer the dominant species. Mutants had risen not as rebels or protectors, but as rulers. Civilization bent to their will, and at the center of it all sat a man once known for peace…
Charles Xavier.
But this was not the professor Harry had once known.
This was Omega Xavier—a psychic god who had merged with Cerebro, erased his mortality, and absorbed the minds of every mutant that had ever lived. He was mind and machine, prophet and tyrant.
And he had summoned Harry.
Arrival and Warning
Harry stepped through the multiversal gate with Storm, Jean, and Eira flanking him. The landscape of Earth-828 shimmered with psionic energy. Cities floated above the ground. The skies were clear, but Harry could feel the pressure of millions of thoughts pressing inward.
"He knows we're here," Jean said. "He's known since before we arrived."
They reached the Citadel's steps—dozens of stories tall, carved from living thought. At its peak stood Xavier… dressed in flowing silver robes, his eyes glowing like twin galaxies.
"Welcome, Harry Potter," he said, voice resonating through every molecule. "I've been expecting you."
"So I heard," Harry replied. "Omega Xavier. Or should I call you something else?"
"You can call me the inevitable."
The ground rippled. In an instant, the four of them stood within the inner sanctum—a throne chamber built from memories and minds.
"Why summon me?" Harry asked.
"Because I've seen what's coming," Xavier said. "I've seen the end of all timelines. The true source of the Veilwraith. And I know you're the only one who can stop it. But to do that, you must choose."
"Choose what?"
"To join me. Merge your mind with mine. Become one. Guardian of the Multiverse and Master of the Omega Core."
Harry took a breath.
"No."
Xavier didn't blink.
"I suspected as much."
Then the chamber collapsed into thought—and Harry found himself alone in a vision.
The Trial of the Mind
Xavier didn't fight with fists.
He fought with memory.
Suddenly, Harry was 11 again, under the stairs. Then 17, holding Dobby's body. Then 22, burning in Fiendfyre. Then dying, again and again, across universes.
"You carry too much pain," Xavier's voice echoed. "Let me take it."
"I need it," Harry gasped.
"You don't. Give it to me. Be free."
He was offered peace. Warmth. A world where his parents lived, where Sirius never fell, where Dumbledore was honest.
But it was false.
"This isn't real."
"Does that matter?"
Harry clenched his fists. The Hallows pulsed at his side. The lightning of Olympus roared in his blood.
"It matters to me."
With a blast of golden energy, he shattered the illusion.
And returned to the throne room—facing Omega Xavier once more.
Mind vs Magic
The room trembled as Xavier floated down from his throne, his body glowing with raw psychic force.
"Then I will take your power by force."
Harry raised his wand.
Storm summoned a hurricane.
Jean's eyes ignited with the Phoenix.
Eira unsheathed her twin blades of paradox.
"Try us," Harry said.
The battle was silent—but earth-shattering.
Jean and Xavier dueled on the astral plane, minds clashing in fractal geometry.
Storm redirected the psionic wind to shield the others from Xavier's attacks.
Eira bent probability to undo Xavier's predictions.
And Harry… dove straight into his enemy's mind.
Through a sea of voices. Memories. Pain.
He found the original Charles Xavier—trapped beneath layers of power and ambition.
"Help me," the true Xavier whispered.
"I will," Harry promised. "But first I have to set you free."
The Soul-Shatter
At the heart of Omega Xavier's mind, Harry cast the Spell of Severance—a forbidden spell learned from Merlin's deepest archives.
It split the soul, not to kill—but to liberate.
With a cry of pain and power, Omega Xavier was pulled apart.
The godlike husk collapsed to the ground.
From the echoing silence rose the original Charles—older, frail, but truly himself.
He opened his eyes.
"Harry… thank you…"
Jean helped him stand. Storm wept silently. Even Eira offered a rare smile.
"The multiverse is safe… for now," Xavier said.
But Harry shook his head.
"Not yet."
He turned toward the open sky.
Something deeper still stirred.
The Veilwraith had been the puppet.
Now it was time to face the puppeteer.
Epilogue: The Silence Between Stars
In a pocket of space where light did not reach, a throne of bones awaited its master.
He sat with skin like darkness and eyes like dying suns.
The Architect of Oblivion.
The true enemy.
And in his hand, he held a book.
Bound in phoenix feathers, stitched with wandwood and prophecy.
On its cover, it read:
"The Book of Harry Potter."
"So, little god," the Architect whispered, flipping the page. "Come find me. Let's finish your story."