Inside a dimly lit cabin, Hidan sat causally with his hand resting on his knee.
The tengu mask covered his face, but behind it, his eyes burned crimson.
Scarlet tomoe rotated slowly, the three tomoe Sharingan gleaming in the dark like predator's eyes.
Heh. So this is the Uchiha's so-called strongest bloodline limit…
Even with only the three-tomoe stage, the Sharingan was ridiculous. Not only could it trace chakra flow like a map, but it also read the tiniest movements.
Predicted seals before they were finished, cast genjutsu to paralyze or hypnotize, and copy ninjutsu, taijutsu, and genjutsu techniques instantly.
All of that, without even reaching the Mangekyō.
When Hidan struck Shisui down, the system had chimed in his head.
Ding! Kill confirmed. You have acquired: Sharingan (evolved to three-tomoe). +5000 kill points.
He laughed at the time, even through the blood on his hands. Killing Shisui had vaulted him into a new league.
Now, his panel had changed.
Host: Hidan
Strength: Quasi-Kage (not counting special abilities)
Kekkei Genkai: Sharingan (upgrade to Mangekyō requires 5000 kill points)
Element: Fire
Ninjutsu: Death Division Ritual, Mind Transfer Technique, Eight Gates, Body Flicker, Fire Release: Great Fireball, Fire Release: Dragon Fire
Specials: Immortal Body, Perception
Weapons: Bloody March Scythe, Black Spear
Kill Points: 5105
Hidan tilted his head, grinning under the mask.
"Well, look at me… a silver-haired freak running around with Uchiha eyes. Bet Danzō would shit himself if he saw this panel."
Still, the system annoyed him.
"5000 kill points just to upgrade to Mangekyō? That's one Shisui-tier genius per upgrade! Kage-level monsters aren't exactly falling from the sky, you know!"
He paced the cabin, scythe scraping against the floor. "What do they expect me to do, farm Kages? Hunt missing S-class freaks for breakfast? Tch."
And even if he could, the Mangekyō came with its own curse...blindness after repeated use.
Unless he reached Eternal Mangekyō, his new toy would burn his eyes out eventually. That wasn't exactly part of Hidan's long-term plan.
"The only shot is banking on the Uchiha clan massacre," he muttered.
"All their blood, all their deaths, all those kill points… enough to push me through to Eternal."
"Otherwise, I'd have to jump some future boss character, and honestly… that might be kinda fun too."
Finally, he stopped pacing.
"Upgrade."
The word left his lips like a curse.
The system chimed:
5000 kill points consumed. Upgrading Sharingan to Mangekyō…
Choose two abilities from the list of known Mangekyō techniques.
A panel unfolded before his eyes:
Tsukuyomi
Amaterasu
Kotoamatsukami (cooldown: 10 years)
Kamui (long-range / short-range variants)
Hidan's brows twitched. "…That's it? Where the hell's Madara's? Where's Izuna's? Did you idiots eat them?"
Unknown abilities cannot be selected.
The system's voice was cold, robotic.
"Che. What about Susanoo forms? Can I pick those?"
No. Susanoo manifests only when specific ability combinations are unlocked.
"Bullshit!" Hidan spat. "You're telling me if I pick the wrong combo I don't even get a Susanoo? That's scuffed as hell."
He clenched his fists. Ideally, he wanted Itachi's Susanoo: the Totsuka Blade to seal enemies instantly, the Yata Mirror to reflect any attack, plus Yasaka Magatama for long-range spam. A perfect kit.
Instead, the system boxed him in.
He pressed. "If I choose two abilities now, can I still get the others later?"
Upon evolving to Eternal Mangekyō, you will gain the remaining two. Final ability may be purchased for 50,000 kill points.
"…Fifty thousand?" Hidan froze, then burst out laughing. "FIFTY. THOUSAND. Kill points? You absolute scammer! That's daylight robbery!"
Please choose your abilities.
"Yeah, yeah. Screw you."
He inhaled sharply, then said, "Kamui. Both versions."
Confirmed. Left Eye: Long-Range Kamui. Right Eye: Short-Range Kamui.
The panel burned into his vision. His Sharingan twisted painfully, tomoe reshaping, bleeding into a new form.
The Mangekyō pattern gleamed back at him from a shard of glass: twin spirals, hungry and infinite.
Almost immediately, he tested it.
Whrrrp.
Space folded like a whirlpool. Hidan's arm blurred, vanishing into nothingness before reappearing intact. His grin stretched under the mask.
"Now we're talking. Private pocket dimension, untouchable intangibility, teleportation tricks… Kakashi and Obito made entire careers out of this. And now it's mine."
A stray thought made him pause. "Wait… does my Kamui dimension crash with Obito's? Like… do I accidentally bump into him mid-warp? Because that'd be awkward."
No. The host's Kamui generates its own separate space. Outsiders cannot access it.
"…Good." Hidan wiped imaginary sweat from his forehead. "Last thing I need is opening a door and seeing Obito naked in his little void. Ugh."
He spent the next hour playing with it, warping kunai in and out of his pocket world, phasing through the cabin walls just to laugh at how broken it was.
Even better: Kamui didn't shred his eyesight.
No heavy bleeding, no collapsing, no instant blindness like Amaterasu or Tsukuyomi spamming.
As long as he didn't burn himself out with full Susanoo, his eyes were safe.
"This is why I picked Kamui," he muttered with satisfaction. "Space hacks. Low cost. High trolling potential. And now… getting blood just got way easier. They can't block what they can't touch."
"Aahahaha"
Finally, Hidan stood, twisting reality one last time. His body blurred, distorted, and was swallowed by a swirling vortex of space.
When the whirlpool closed, the cabin was empty.
Only the echo of mocking laughter remained.
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