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Oops, I'm Kimimaro? Guess I'll Be the Final Villain!
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(You can find the link for it on my profile page.)
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Around three months had passed since Konoha's failed attempt to eliminate Ryusei.
Not only had they failed to kill him, they hadn't even managed to drive him out of the area, let alone the village itself.
Technically, he was still a member of Konoha, though he'd long stopped wearing something as ridiculous as their forehead protector.
A lot had changed in the shinobi world during those three months.
Through his wide network of sensory and intelligence clones scattered across nations, Ryusei learned something remarkable: at the very same time Konoha had attacked him, the village itself had been struck by someone else.
Specifically, the Hyuga clan.
Konoha had tried to suppress the incident completely, but information like that couldn't stay hidden from someone like Ryusei for long.
The reports were unsettling.
A mysterious attacker had appeared, using a strange, greenish chakra that warped his body, and he controlled some kind of weird mechanical puppets and even shaped lifelike golems from the surrounding terrain.
Witnesses described him as something not entirely human.
Ryusei immediately recognized what that meant. "So… someone from the Moon," he muttered when he first read the reports. "Hamura's line."
But that realization came with another surprise.
Wasn't Toneri supposed to act more than a decade from now?
Then who was this? His father? One of the elders?
Why didn't they move in the original timeline?
The only logical answer, Ryusei concluded, was himself.
His actions—the butterfly effect—had already altered too many threads of this world.
If that was the case, then the lunar Ōtsutsuki had likely acted earlier than intended.
Toneri was still too young, which meant it had to be his father—or perhaps one of the few surviving elders—taking direct action.
But Ryusei didn't see this as a problem. Quite the opposite.
"Perfect," he thought, his lips curling slightly. "More pressure on Konoha… less room for them to focus on me."
The attack had also exposed the Hyuga's long-buried secrets to Konoha's leadership, now under Tobirama's control, adding new cracks to the village's stability.
The other Great Nations had seized the moment, briefly regaining momentum in the war, though it didn't last long.
Ryusei knew that was likely because Tobirama had ordered Danzo to summon Hashirama as reinforcement right away.
With both brothers active again, Konoha had quickly stabilized.
Still, Ryusei knew the lunar threat wasn't finished.
The fact that the Ōtsutsuki patriarch had acted at all meant he wasn't content to leave his clan's fate to Toneri.
He was planning something actively now.
Thinking to himself, his eyes glinted faintly. "Good… come back down to Earth. I'll be waiting."
A small grin formed on his face. "And when you do… that new 'Tenseigan' could be mine."
During those three months, Ryusei also didn't waste a single day, as he never did.
While Konoha was busy licking its wounds and reshuffling leadership under Tobirama's watch, he focused entirely on mastering something new, something no one in the world or the original series had ever seen before.
Deep in the rocky valleys of the southern Hot Water Country, where the mist rolled heavy and the terrain was thick with mineral veins, Ryusei stood shirtless atop a shattered ridge.
Around him, the ground was fractured in wide rings, as if a giant had struck the earth with invisible fists.
He raised his palm. The air around him shimmered faintly, distorting like haze.
A low hum filled the valley, a vibration so deep it made the stones underfoot tremble.
He smiled faintly. "Perfect."
He had finally done it.
A fusion of Fire and Lightning, the two primary affinities this body had even before his transmigration, refined and condensed into a single, advanced elemental release.
He called it Thunder Release.
Unlike Lightning, which relied on raw voltage, or Fire, which relied on combustion, Thunder Release operated through vibration, pure energy compressed into oscillation.
It could pass effortlessly through air, water, and even solid earth, delivering force from any direction.
Ryusei focused, and the mountain below him groaned.
A split second later, the ground erupted with a quake, splitting in jagged lines as if the world itself had flinched.
"Earthquake 'pulse'... stable," he muttered, analyzing the resonance. "Range increase of one or two hundred meters radius again."
Thunder chakra could rattle foundations, crumble buildings, and shatter weapons mid-flight.
Against living targets, the results were even more brutal.
The vibrations shredded muscle and ruptured organs from within, not unlike the Hyuga's Gentle Fist, but instead of precise strikes, this was raw, all-consuming destruction.
He vanished in a blur, his body flickering like a mirage.
When he stopped, he left a crater beneath his feet.
The constant micro-vibrations running through his body made his form quiver at extreme speeds, blurring his outline to the naked eye.
His punches cracked the air with each swing.
The shockwaves followed, rippling outward in concentric waves of force.
A nearby boulder disintegrated into dust.
Another was shattered in two.
When he focused those vibrations into a small, precise point around his fist, a glowing, translucent "quake bubble" formed, pulsing white.
Ryusei drove it forward.
The impact unleashed a roar that shook the entire canyon.
So, it was also the most concentrated and fitting close-range form of an attack he had so far.
The rock wall ahead collapsed completely, leaving a crater so deep it shimmered with rising heat.
White energy radiated faintly around him, not sharp and electric like Lightning, nor wild and fluid like Fire, but a translucent, blinding hybrid of both.
It wasn't light; it was pressure itself made visible.
He stared at his own hand, feeling the faint tremor running beneath his skin.
Micro-vibrations now coursed through his body at all times.
Ever since he'd learned to control them with surgical precision, in part also thanks to the aid of his Byakugan, they constantly tore and rebuilt his muscles, bones, and other tissue, at a cellular level, forcing his body to evolve, adapt, and grow stronger every passing moment.
"My body's still changing," he said quietly. "Every second."
A grin spread slowly across his face.
He looked around at the devastation, the fractured earth, the ruined valley, the air still trembling with residual energy.
"Past Kage level… easily," he murmured. "At this rate, I'm already stepping into Six Paths territory."
Thunder cracked faintly in the distance as if the heavens themselves were echoing his claim.
Ryusei exhaled, chakra swirling faintly around him.
"Let the world burn faster," he said under his breath. "I'll make sure it trembles first."