By the time October arrived, the heat of summer had long faded, leaving the wind sharp and the trees yellowed like old parchment. The Amamiya Clan—once a modest household barely holding its ground—now stood among the greats. Three months of relentless work had turned them from survivors into a force that could no longer be ignored.
New recruits from distant clans filled the training fields, their chakra-laced sweat mixing with the scent of steel and earth. The clan compound buzzed with life and ambition. Somewhere between paperwork and politics, Amamiya Raizen had aged another year—thirteen now, though his eyes looked far older.
He'd spent the past few months buried in clan affairs, barely finding time to breathe, let alone train. If not for the elders stepping in, he would've drowned in scrolls and squabbles before ever touching a kunai again. But now, with the clan running like a well-oiled shuriken, he could finally turn his focus back to the one thing that kept him sane: power.
Raizen sat cross-legged in his room, the candlelight flickering against his face as he sank into the depths of the Super Achievement System. For months he'd ignored it, too busy pretending to be an adult in a world where kids killed each other for pride.
Tonight, though, he let the familiar hum of the interface flood his mind.
A cascade of lights flickered across his vision—achievements unlocked, titles flashing. Silver, gold… and then one that glowed brighter than all the rest.
A diamond.
Raizen's breath caught. "No way. A diamond achievement?"
Silver chests were junk, good for little more than scrolls on how not to die. Gold ones were rare—precious enough to make a man greedy. But diamond? He'd never even seen one unlocked. The system didn't hand those out for surviving puberty.
He scrolled through the achievements, eyes widening as the diamond text came into focus:
[Fame Across the Lands]
Spread your name throughout the world. For a traveler between realities, this marks the start of legend.
And just below it, another shimmer—gold this time:
[Ten Thousand Kills]
Slay 10,000 enemies in battle.
Raizen froze. Ten thousand. He hadn't kept count, but seeing the number written like that hit harder than any kunai. Bandits, mercenaries, shinobi—it didn't matter. They were all gone. Just numbers on a dead man's ledger.
He exhaled through his nose, a dry chuckle escaping. "Guess I've really gone full Warring States mode…"
The silver chests he ignored. They were predictable disappointments—some half-baked jutsu and worthless trinkets. He cracked them open just to clear the notifications, then focused on what mattered.
Two treasures sat before him in the system space: one gold, one diamond.
Logic said to start with the gold. His gut said otherwise. The system tended to play follow-the-leader; rewards stacked off what came first. So, diamond it was.
[Open Diamond Treasure Chest?]
His hand hovered, then clenched. "Do it."
A metallic chime rang out. The chest shimmered, cracked—and vanished. In its place floated something small and terrible: a single crimson eye.
[Item Acquired: Mangekyō Sharingan]
[Accept?]
Raizen's pulse spiked. For a moment, he forgot to breathe. His voice came out hoarse. "Accept."
Agony followed. White-hot, searing through his skull. Blood traced down his cheeks, and yet he grinned like a madman. When he opened his eyes again, the world burned red—three spinning tomoe swirling like black sickles over a crimson sea.
"Mangekyō… Sharingan."
He steadied his breath, blinking against the sting. The sight felt unnatural and divine all at once—each flicker of motion sharp as a blade. He'd seen Itachi's eyes once in another life, behind a screen. To hold that same cursed beauty now felt surreal.
"If these are the same pattern… Tsukuyomi, Amaterasu, Susanoo… heh, not bad perks for a reincarnator."
His laughter came low, almost fond.
He shifted his focus to the gold chest and cracked it open. Space warped before him, spiraling like distorted glass.
Raizen's grin widened, a hint of madness in his eyes. "You've got to be kidding me…"
The room filled with a faint hum of chakra as the air twisted.
Whatever the gold chest had given him—it wasn't just power. It was a door.
And he was ready to walk through it.
...
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