In the original timeline:
The Poison Clan heir was crippled after disrespecting cheon' s mother.
Cheon Yeo-Woon was punished for fighting back and sent to detention for a week.
He only later found the map to the Demon Cave and discovered the Sword Demon's legacy much too late.
But now—
The Poison Clan heir was healthy, his dantian intact.
Cheon Yeo-Woon, unpunished, had moved freely through the academy.
He found the ancient map early, and with it—the path to the Demon Sword Art, hidden deep beneath the library's eastern wing.
Within a day, dozens of students began flooding the Central Library, hungry for knowledge. Cultivation manuals, qi theories, martial philosophies—all accessible if one could read fast enough.
And among them… two stood out.
Cheon Yeo-Woon. Yun Riku.
📚 Library – Central Hall
The guards at the library had never seen anything like it.
The two boys—both 15, both beautiful and terrifying in different ways—sat at opposite ends of the library. Scrolls unrolled, books opened, pages fluttered.
"I-Is it me or… are they reading 10 pages a minute?"
"They're flipping like madmen. Are they even comprehending any of it?"
"No… look at their eyes. They're memorizing everything."
Of course, only one had a secret weapon.
From beneath his half-lowered eyelashes, Riku's Sharingan spun slowly, reading and analyzing every symbol, theory, and martial method at terrifying speed.
"System," he whispered silently, "record everything I see."
"Acknowledged."
He moved through dozens of books—on inner Qi manipulation, sword trajectories, illusion breaking, and demon art history.
🪨 The Sword Mark Stone
Later that evening, both Cheon and Riku—drawn by instinct or destiny—arrived at the same stone in the back courtyard.
The large slab of black jade held dozens of faint sword marks, carved by the legendary Sword Demon in his final days.
Some were deep, some barely visible.
Some looked chaotic, others divinely smooth.
Riku's eyes narrowed as he stared.
Cheon Yeo-Woon stood nearby, staring as well, hand slowly mimicking a few of the strikes.
Riku activated his 3-Tomoe Sharingan in secret, analyzing every groove, every angle, calculating trajectories and timing.
Then—he sat down.
He closed his eyes and began to visualize.
In his mind, he saw the sword dance. The flow of qi. The rhythm of life and death.
And then
🔔 System Notification
> Demon Sword Art Detected
Learn [ Blade Manual] + [Demon Sword Art: 9 Cuts of Oblivion]
⚠️ Cost: 25,000 System Points
✨ Hidden rewards available based on user's Enlightenment Level
> Do you wish to proceed?
> [✔️ Yes] [❌ No]
"Yes," Riku whispered.
Download Complete…
His body shook.
Suddenly, his mind exploded with information—countless blade trajectories, forms, and deep demonic intent filled his sea of consciousness.
But then something unusual happened.
He didn't just learn the techniques.
He felt them.
His body began to tremble, not from pain—but from resonance.
The blade forms awakened the flow of natural energy within him.
The Five Chakra Natures gifted by his system—Fire, Water, Earth, Wind, Lightning—merged with his Murim Qi Core.
For the first time—
Qi and Elemental Nature fused in harmony.
His wooden heart pulsed.
His ice core resonated.
His Sharingan spun wildly.
He stood, unsheathing a basic training blade.
He performed one cut.
The air split.
The stone cracked.
The library's lights flickered for a moment.
🐉 Enlightenment Achieved!
> ✅ Qi + Natural Chakra fully unified
✅ Demon Sword Art Mastery: 100%
✅ Hidden Reward Unlocked: [True Blade Intent – Phase 1]
⚔️ Realm Breakthrough!
🔥 You have entered the Realm of SUPREME GRANDMASTER
Note: Only 8 known cultivators hold this realm across the Demonic Cult & Central Alliance.
Riku stood under the moonlight, blade humming.
Even Cheon Yeo-Woon turned to look at him, brows furrowing slightly.
"...What did he just comprehend?"
After some time , he woke up
And the said to guards
" Thank you for guardinh me. "
Guards bowed and showed gratitude
Even main character was feeling down due to riku' s talent .