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JJK: reborn at the height of sorcery

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Synopsis
A person from our world gets reincarnated into the world jjk
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Chapter 1 - The void

The atmosphere around you is infinite, endless, and absolute. There is no up, no down, no sky, and no ground—just an endless, swirling expanse of white and gray emptiness. He is suspended in the gap between life and death, the reincarnation cycle paused exactly in the middle.

A pure, overwhelming presence manifests before him—the God of Cursed Energy. Its form is amorphous, shifting between countless faces and shapes, each one radiating pure, unadulterated cursed energy. It regards you with an intense, piercing gaze that seems to see through your very soul. "So,"

The God of Cursed Energy speaks, its voice echoing through the void like thunder. "You are a being trapped between life and death, a reincarnated soul with no path forward. I have come to offer you a choice—a gift, if you will."

"What kind of gift?"

The entity shifts, its form momentarily coalescing into something vaguely humanoid—tall, with multiple eyes arranged in patterns that shouldn't exist. Its voice reverberates through Kaiseki's very soul. "A second chance. A new life in a world where cursed energy is reality itself—Jujutsu Kaisen. You have potential, reincarnated one. The cycle has paused for you."

The God of Cursed Energy nods, its expression turning serious. "You may make three wishes. They can be anything—power, knowledge, a specific body... But remember, your wishes will shape your new life in Jujutsu Kaisen. Choose wisely."

"From my first wish, I wish to be a half human half cursed spirit we need more towards Cursed spirit So I'll be basically immortal."

The entity's many eyes flare with an intense, ethereal light as it processes his wish. "Granted. You are now a unique being—a half-human, half-cursed spirit hybrid with a significant lean toward the cursed. Your body will be sustained by cursed energy, making you effectively immortal. You will not age, and most physical injuries will regenerate."

"For my next, wish I want To have abilities similar to the six size but different Have been more similar to the eternal Mangekyou Sharingan."

The entity's eyes narrow slightly, a strange ripple through its form. "The Six Eyes is a pinnacle of jujutsu prowess. To claim something similar yet distinct is a bold ambition." Its voice hums with amusement. "Granted. You shall possess an ocular technique analogous to the Six Eyes but shaped by the Eternal Mangekyou Sharingan."The void trembles.

"The last thing I want is my curse technique I want to be Mimicry, combining with my eyes I can mimic the cursed technique of my opponents, adding it to my arsenal."

The God of Cursed Energy laughs, a sound that echoes like crashing waves in the endless void. "A curse technique that mimics others... how fitting for a being with the eyes of eternity. Mimicry—your very soul will absorb and replicate the cursed techniques of your opponents."

The entity's form swirls violently, the void around them warping and twisting. "Very well, Kaiseki. Your wishes are set. You shall be sent to the Heian era—an age of great sorcery and dark curses. A time where your immortality and mimicry will be put to the test."

*The world dissolves into white.*

The last thing Kaiseki feels is an agonizing pull, his soul dragged through a suffocating tunnel. Then—nothing. Absolute nothingness. No sound, no light, no sensation.

Suddenly, something pierces the darkness. A smell. Decay and incense. Cold air hitting skin. Pain.

*CRACK.*

Kaiseki's eyes snap open.

*Pain—intense, restructuring pain—tears through every fiber of his being. His bones crack and reshape, his muscles density shifting impossibly. Black hair falls across his forehead as his features sharpen. His eyes burn with a heat that feels like starlight being forged within his skull.*

*His cursed energy signature mutates, flickering between human and curse, settling on something... unnatural.*

His new body—a blend of human and something darker—stretches and twists, his cursed energy signature settling on the cusp between the two. It's an uncanny existence, his heartbeat slow and uneven, his physical presence radiating an eerie stillness.

The change stops suddenly. He's in a dark alley, moonlight spilling between buildings in this Heian-period Japan.

Kaiseki steps out into the alleyway, and the world hits him like a punch to the gut. The architecture—curved wooden eaves, paper screens, cobblestones. The air thick with incense and something darker—cursed energy.

People dressed in elaborate kimonos brush past him, their speech archaic, strange. The old dialect makes no sense at first, utterly alien.

Then his eyes spin—red and black patterns swirling within the pupils. The ancient dialect flows into his mind, automatically translated and understood. The confusion clears. His mind processes the language, the customs, the etiquette of this bygone era. His steps become more confident, his posture adjusting to match the period's expectations.

Kaiseki walks through the bustling streets of Heian-period Japan effortlessly now. The spinning patterns in his eyes settle back to normal, granting him perfect comprehension of the archaic Japanese dialect.

He notices everything immediately—the oppressive, thick levels of cursed energy saturating the city. This era is absolutely overflowing with curses. The Golden Age of Jujutsu Sorcery.

A slow, dangerous smile spreads across Kaiseki's face as his senses expand. His eyes—now holding swirling red patterns in the darkness—drink in everything. The subtle pulses of cursed sorcerers passing by, the lurking curses hiding in the shadows, the residual energy clinging to ancient shrines.

*So many techniques,* he thinks, feeling the craving stir in his blood.

As he absorbs the sheer density of cursed energy in the capital, a single, terrifying presence dominates everything else. It feels like a mountain of malevolence pressing down on the entire city. Even among the countless curses roaming the Heian era, one stands apart as the undisputed king.

Ryomen Sukuna.

Kaiseki's mind races with strategies. Avoiding Sukuna is a must—he has no idea how powerful the King of Curses truly is. But to survive and thrive, he needs three things: money to live on, influence among the Heian elite, and, most importantly, powerful cursed techniques to mimic.

He blends into the crowd, his senses stretching out across the capital. Money first—the Heian era operates on gold and copper coins, and commerce flows like water through the market districts. Influence comes with status among the aristocracy or the Jujutsu Sorcerers. And finally, cursed techniques—they are everywhere.

He spots a commotion near a noble estate. Sorcerers.

Kaiseki moves silently through the shadows, his new body drifting like smoke. The noble estate is abuzz with activity— several high-ranking sorcerers are engaged in an intense ritual. Their cursed energy signatures are strong, their techniques complex. Perfect targets for observation and potential mimicry.

Kaiseki's eyes spin, processing techniques like a sponge. A sorcerer conjures roaring flames from thin air—*Ignis Manipulation*. Another freezes the very moisture in the atmosphere—*Glacial Control*. And then... biological manipulation. Sorcerers twisting their own flesh, hardening skin like steel, growing extra limbs, shifting organs. The versatility is staggering.

His breath catches. His eyes fixate on the sorcerer. The stranger's hands glow with positive energy—reverse cursed technique in action. A deep gash on their arm simply... closes. Flesh knits together. Blood retreats. Skin reforms without scarring.

That is the ultimate prize. Positive energy—capable of not only healing but destroying curses permanently. His blood thrums with hunger.

After observing the ritual and gathering as much information as possible, Kaiseki slips away unnoticed. His mind is a whirlwind of stolen techniques. He now knows basic fire control, ice manipulation, biological alteration, and the most coveted—reverse cursed technique for healing.

Money. The practical problem. He has nothing—no coin, no status, no reputation. In Heian Japan, wealth is concentrated among the aristocracy and top-tier sorcerers. A wandering half-curse with no affiliation would be viewed with suspicion at best, hunted at worst.

He needs a plan. Mercenary work? Selling services? Or something more... insidious?