Chapter Text
Edo, Musashi Province - 816 CE
Iori Utahime’s feet were rooted to the cold earth of the hill. Moments ago, they had moved in the sacred patterns of the Kagura dance; now, they were paralyzed, unable to flee the cataclysm unfolding in the valley below. For months, Ryoumen Sukuna had been a walking disaster, a plague of violence and malevolence that left traumatized villages and countless dead in his wake. The seals of her Sarume Clan, passed down through generations, had proven to be little more than paper screens against his overwhelming power.
Now, the final hope of the Golden Era was playing out before her. Master Tengen had assembled a cadre of the era's mightiest sorcerers. There was Geto Suguru of the Imbe Clan, whose mastery over Cursed Spirits was legendary; Nanami Kento, the formidable bastard of a noble line; and Mei Mei, a shinobi whose surveillance technique pierced any veil. They were supported by Ieri Shoko, a rare healer, and Yaga Masamichi, who could command curse corpses like a general leading an army. The great clans had sent their heirs, Kamo Noritoshi and the Zenin clan's monster, Toji, who fought without an ounce of cursed energy but with a ferocity that surpassed most sorcerers. He had refused to let his son, the young inheritor of the Ten Shadows, join the fight, claiming the boy could barely summon four shikigami.
They were all there. The best of a generation. They were all Plan B.
Plan A was a boy who had been hidden from the world until a few months ago: Gojo Satoru. The first and only Six Eyes. The wielder of the Limitless. Master Tengen herself had petitioned the Gojo clan, and for the first time, their treasure had been revealed.
As the priestess assigned to his preparation, Utahime had spent two months at his side. Her initial awe at his ethereal beauty and the sheer ocean of his cursed energy had evaporated the moment he opened his mouth. Without even looking at her, the brat had asked his servant, Ijichi, why "someone so weak" was permitted in his presence. The poor man had stammered an apology on Utahime’s behalf.
But in the quiet hours of training, a fragile understanding had formed. He was insufferable, but he was also brilliant. He had seen the fundamental truth in her Kagura seals, and she had seen the raw, untamed power in his technique. They had found a way to combine her precision with his overwhelming force, creating barriers that could contain even the most volatile curses. It wasn't friendship, but it was a sliver of respect.
Now, watching him face Sukuna, that silver felt like a thread holding her hope together.
The battle was a war between concepts. Satoru was a flickering flame of red and blue, his Limitless technique twisting space into impossible shapes. Sukuna was a cataclysm in human form, his strikes unmaking reality itself. He was older, his understanding of cursed energy fundamental, while Satoru was a prodigy still learning to wield a power that defied comprehension.
A shockwave from a near-miss sent Satoru skidding back, his feet carving trenches in the blood-soaked ground. He spat blood, but he was grinning.
"He's testing him," Nanami murmured, his knuckles white. "Probing the limits of the Six Eyes."
Then, the world dissolved.
"Domain Expansion: Malevolent Shrine."
The sky bled. The air thickened with decay. Buddhist shrines materialized and crumbled in an instant as a wave of pure slicing energy filled the valley.
"Domain Expansion: Unlimited Void."
Satoru's cosmos of infinite information slammed into Sukuna's malevolence. For a heart-stopping moment, reality tore at the seams. Utahime felt her own cursed energy, refined by years of ritual, recoil in terror.
When the domains shattered, both combatants were on one knee. Satoru was bleeding from a dozen cuts, but his smile was wider. Sukuna's perfect composure was fractured, his breathing ragged.
A shadow fell beside Utahime. It was Master Tengen, her form seeming to shift between existence and non-existence. Her eyes were fixed on the battle below.
"Iori," Tengen's voice was a low hum that vibrated in Utahime's bones. "His energy dipped. After the domains clashed. He is not unbeatable."
Tengen's gaze locked onto Utahime's. "The barriers are conduits. I need you to dance. Pour your energy into the seals. I will attempt to bind him while he is weakened."
Utahime's paralysis broke. This was her purpose. She moved to the center of the hidden array, her feet finding their familiar positions. As she began the sacred dance, her voice rising in an ancient chant, the very air began to thrum with power.
Sukuna's head snapped up, his four eyes locking onto her. A low chuckle escaped him. "A clever little trick. Trying to cage a god?"
He closed his eyes. A suffocating pressure erupted from him, far greater than before.
"NO!" Tengen screamed. "He's going to detonate everything!"
Utahime felt her own energy, her very life force, being violently ripped from her. The world turned white.
In that blinding instant, as Tengen's desperate sealing jujutsu consumed the souls of everyone present, Sukuna acted. With a final, contemptuous snarl, his four hands made a tearing gesture. His twenty fingers detached, flying like dark meteors through the fabric of the collapsing barrier, escaping into the world.
Then, silence.
Utahime knew no more.
Kinugasa, Kyoto Prefecture - December 7, 1989
The only sound was the ragged breath of the young mother on the futon. The door slid open, and a young man entered, his eyes wide as they darted from his wife's exhausted face to the small baby wiped clean and resting on her chest.
He moved slowly, as if approaching sacred ground. He sank to his knees beside her, pressing a careful, trembling kiss to her temple. His hand reached out, gently stroking the shock of white hair on his son's head. His finger traced the curve of the baby's nose, and the newborn's hand shot out, grabbing it with a strength that startled him. The midwives gasped.
The father looked from his wife to his mother-in-law, then back to his son. His dark eyes met the baby's, and his body jerked. His finger was released. His mouth slowly opened, trapped by what he knew, deep in his soul, was not a normal newborn's blue.
Tokyo - The same day
Master Tengen's eyes snapped open. They sat up abruptly, their breath catching as they took in their surroundings—the familiar, sterile safety of the Tombs of the Star Corridor. They had laid down here nearly a thousand years ago.
After the Duel of the King of Curses and the Honored One, cursed energy had vanished from Japan. With it, the era of sorcerers ended. The last of them dying of old age. Tengen, immortal, had erected one final barrier around themselves and sealed their body in a slumber, waiting.
Today, they had woken.
A wave of incredible, unmistakable cursed energy had pulsed across the world. The new bearer of the Six Eyes and Limitless was born. In his wake, curses were stirring, and the dormant bloodlines of sorcerers were awakening.
Tengen looked at their hands, felt their face, and sighed. "So much for a welcoming face."
They rose slowly, gathering their thoughts and abilities.
"So you finally decided to show up, Gojo Satoru." A faint smile touched their lips, then faded into concern. "Which means you won't be far behind, will you... Sukuna."