The Land of Fire, Konohagakakure—night deepened over the Uchiha clan district.
"Have I… transmigrated?" Uchiha Yue stood in the dim room and stared at the moon outside the window, a dazed expression on his face. "I never thought transmigration was real, and that it would happen to me. Incredible."
He raised a hand and looked around. The next moment his face went slack with realization. "Konoha? The Uchiha clan? Wait—where exactly have I transmigrated to?" Uchiha Yue understood his situation and his identity, but in the next instant his expression changed; a terrible realization hit him.
"No way—this is the Naruto world? When is it now? How long until the Night of the Clan's Extermination? I must prepare—" He shook his head, his face hardening, but before he could finish the thought he felt a pain in his chest. He instinctively looked down to see the cold gleam of a blade pierce his heart and emerge through his chest.
Behind him, without his noticing, a figure wearing a fox mask had appeared—Uchiha Itachi. "So this is… the Night of Annihilation." The blade was drawn free; Uchiha Yue's body went limp and collapsed. Itachi didn't spare him a glance—he turned and walked away; there were still clan members left to kill.
"W-Why? What did I do wrong? Why must I die the moment I arrive? System? Cheat? Anything—help me!" But there was no reply; no one answered him. "Damned Itachi Uchiha, damned shinobi world—damn it all!"
Anger replaced fear as Yue felt life slipping away; flames of fury ignited in his eyes. "Power— I need power! I will survive—I will survive, I must survive!" The desire to live and the rage in his mind swelled to a peak.
Boom! It felt as if something exploded in his head; his pupils began to bloom with an uncanny light. One tomoe, two tomoe, three tomoe—in moments his ordinary eyes awakened into Sharingan. As the third tomoe formed, the three black tomoe spun wildly and fused into a strange, eerie pattern.
"Hahaha—so be it. Then let everything be destroyed!" The wound in Yue's chest healed rapidly. He rose slowly from the ground as power surged within him; his body began violently refining chakra, and the pattern in his left eye began to spin.
Chakra, ocular power, soul—every force within him started to unify. A trickle of chakra flowed over his skin and constructed a phantom skeletal outline; moonlight poured across him and instantly fused into his body.
Elsewhere, Uchiha Itachi had finished killing everyone, including Yue's parents, leaving only Uchiha Sasuke alive. Thus, the Uchiha clan was wiped out—not by an outside enemy, but by one of their own.
"It's over." Itachi lowered his head and looked at Sasuke lying on the ground. Just as he was about to turn away, a tremendous chakra fluctuation erupted from the clan grounds behind him.
"Uchiha Itachi!!!" A roar resounded. In the next instant, a figure wrapped in deep-blue chakra and surrounded by a phantom skeletal outline charged at him; in the blink of an eye the figure appeared beside Itachi and struck him with a whip-like kick.
Bang! Itachi was blasted away like a cannonball, smashing through many buildings as smoke billowed.
"Cough… cough…" Itachi coughed and raised his head to look toward the figure. "This is… a Mangekyō Sharingan?!" Itachi's pupils constricted. Where had that come from? Why did this person have a Mangekyō Sharingan? Wait—could it be that, at the moment the clan was destroyed, someone awakened a Mangekyō in a near-death state? Such a thing…
"Uchiha Itachi, huh—haha, that stab really hurt!" Uchiha Yue looked toward Itachi and grinned. With his dōjutsu awakened he felt power flow into him endlessly; a special field around him continuously absorbed surrounding energy, including that of the Uchiha clan members Itachi had slain.
He exhaled, and chakra expanded from his body to form a towering skeletal giant of chakra that struck down at Itachi.
Boom! A huge explosion sounded; the place where Itachi stood was replaced by a chakra-formed bone hand.
Clang! A kunai struck Susanoo and was easily deflected.
Yue raised his hand and smashed it down toward Itachi. "Is this Susanoo… the power of the Mangekyō? Huh—sorry; though you lived…" Itachi stood on a nearby rooftop watching the massive bone hand fall toward him. He took a deep breath, and in the next instant his eyes changed—he activated his Mangekyō Sharingan. He vanished in a flash and narrowly evaded the powerful blow.
Fire Release: Phoenix Flower Technique! Several fireballs slammed into the Susanoo's huge form, exploding into sparks that Uchiha Yue absorbed. As time passed, the skeletal giant continued to perfect itself; chakra-formed flesh began to grow on it.
"Ninjutsu not working?" Itachi's expression darkened. If this newcomer who had just awakened a Mangekyō could unleash Susanoo, then Itachi could do the same.
Boom! Orange-red chakra burst from Itachi and a red skeletal giant formed to envelop his body.
Crash! In the blink of an eye, the two giants collided.
"Ah… Nii-san…" From a distance, Uchiha Sasuke watched in horror, then rose to his feet, bowed his head, closed his eyes, tears streaming as he ran.