When Riku entered seclusion, he wasn't simply preparing for the next test—he was preparing to transcend the very boundaries of martial existence.
The chamber granted by the academy was carved deep into the cliffside, with ancient formations carved into the stone, perfectly suited for deep cultivation. As the heavy stone doors sealed shut, Riku sat cross-legged on the cold ground. The air grew still. His breathing slowed. His mind sharpened.
The first path he walked was the Sage Arts of Hashirama's Wood Style. With each breath, he summoned roots and vines from the stone floor, shaping them into spears, armor, and wood clones. Yet he wasn't satisfied. Controlling the life energy of nature itself was different than pure chakra manipulation—it required heart, stillness, and resonance with the world.
He sat in same position for day and meditated and started feeling natural energy of earth . Slowly, his chakra and natural energy began blending in harmony. Wood grew at his command—lush and vibrant, strong as steel, he moved forward..
Then came his 3-Tomoe Sharingan. He refined it daily, meditating with mirrors, fighting against his clones, observing the smallest ripples in ki flow. His perception grew sharper than any blade.
But it was his swordsmanship that evolved most radically.
Having fused the stolen memories of the Sword Demon's feral chaos with the Blade God's disciplined precision, Riku began to forge a new path:
"Heaven-Severing Blade Doctrine" — an ultimate sword art of Murim. Where the Demon relied on instinct and rage, and the God relied on calculation and form, Riku danced on the edge—his swordplay was like poetry wrapped in thunder. Unpredictable, fluid, perfect.
In original timeline , cheon woon also did this but he was not able to perceive natural energy and has no sharingan which made his technique slightly inferior to his creation .
He recorded the techniques on blank scrolls using Fuinjutsu—the art of sealing—another field he had purchased from the system. He learned to create storage scrolls, explosive tags, and even barrier formations. One entire week was spent perfecting the "Four Pillar Seal," capable of trapping even a Grandmaster temporarily.
To withstand all this power, Riku put his body through brutal training:
He tied iron weights to his limbs, each 50 kg.
He ran up vertical cliff walls, over and over until his legs screamed.
He submerged himself in icy water for hours, then jumped into blazing heat, tempering his body like a blade.
He trained sword forms blindfolded, upside-down, and even while dodging needles shot from all directions by a trap formation he created himself.
His muscles expanded, then refined. His bones strengthened and condensed. His organs pulsed with energy.
And slowly, unknowingly, his body began to change…
Two years passed.
The room where Riku sat was filled with a rainbow-colored aura, radiant and wild, whirling around him like a divine storm. Cracks began appearing on his skin. Not from weakness—but from evolution.
Then, his old body shattered like a shell—and from within, the new Riku emerged.
He stood tall—over 6 feet, his body carved like a sculpture of a war god. His once-lean frame was now a balanced blend of strength and grace.
His skin glowed faintly, radiating health and qi in perfect harmony.
His black hair was longer, cascading to his shoulders with silver streaks appearing near the ends.
His eyes, when activated, gleamed with a deeper hue—a three-tomoe Sharingan with a golden ripple.
His chest bore a faint crimson lotus-shaped mark, symbol of his mastery over both sword arts.
He had turned 17 years old inside seclusion, and in that time, he had:
Mastered Sage Mode: Wood Style
Perfected the Heaven-Severing Blade Doctrine
He reached grandmaster realm in fuinjustu.
Achieved complete harmony of Qi, Chakra, and Natural Energy
Reached the rare and feared state of peak Supreme Grandmaster
Refined his body to surpass that of most elders
And developed a spiritual pressure that could crush weaker warriors with a glance
Riku took a deep breath, his chest rising slowly. "It's time."
He stepped out of the chamber. The sunlight greeted him warmly for the first time in years. Waiting for him were six figures, each standing straight, their eyes filled with pride and reverence.
His Six Swords.
Each one an heir of the six main clans. The Blade Clan heir, stern-faced and loyal. The red-haired girl, Wonryou, radiant and strong. And the others, each exuding a refined aura—they had all grown in his absence.
Two of them—Wonryou and the cheong—had reached the Grandmaster Realm. The others weren't far behind.
They knelt instantly as he approached.
"Master Riku," they spoke in unison, their voices full of respect.
Riku gave them a nod. "You've grown well."
Wonryou stepped forward and held out a folded robe of obsidian silk, embroidered with a golden lotus and crossed swords. "This is for you… Young Lord. I made it ."
The robe shimmered in the light. It was made for a ruler.
Riku took it silently and began wearing it, and as he did, the Blade Clan heir added with a small smile, "We emerged from seclusion a week ago. We've been waiting for you."
Wonryou's gaze lingered on him, her cheeks slightly red.
Riku stood tall, his new robes fluttering with each breath of wind. The mountain trembled faintly under his rising aura.
In original timeline, all of these were talented but due to cheon woon crippling them due to his hatred towards great clan made them a forgotten extra.
But now everything has changed,then he stepped forward and patted wonryuo head like little girl making her blush.
And then riku felt a angered gaze from moon gyu still hiding her identity from everyone one .
The old world would not recognize this new Riku. And that was just as he intended.