The sensation of falling was endless.
No sound, no air — just a spiraling, colorless void.
He remembered flashes of tires screeching, a horn blaring, the sickening crunch of metal on flesh... and then, nothing.
Now, he drifted in a weightless space, his memories already starting to blur around the edges.
"Is this... death?" he thought, his voice echoing only in his mind.
Before despair could creep in, a voice — calm, emotionless, yet somehow not unfriendly — broke the silence.
[You have been selected for transmigration.]
[World Selected: High School DxD.]
[New Identity: Kiba Yuuto.]
[Initializing Auxiliary System...]
[System Installed: [Sacred Gear Developer System].]
"W-Wait, what?!" the boy — no, now Kiba Yuuto — stammered mentally. "High School DxD?!"
He wasn't just familiar with the name — he was a fan. An otaku who had spent countless nights binging through the light novels, anime, even the manga spin-offs. The story of devils, fallen angels, dragons, gods, and absolute chaos.
And Kiba Yuuto... wasn't he Rias Gremory's loyal Knight? The handsome swordsman with a tragic past?
Just as the magnitude of it all hit him, the void around him shifted. The darkness shattered like glass, and the next thing he knew—
He was waking up in a bed.
A real one. Soft sheets, warm air, the faint scent of lavender... and a body that felt strangely unfamiliar, yet somehow natural.
Slowly, he sat up. His reflection caught in a nearby mirror: silver-blonde hair, striking blue eyes, a sharp yet youthful face. Athletic build, lean but strong.
No doubt about it.
He was Kiba Yuuto now.
"This... this is insane..." he muttered, his voice lighter, smoother than he remembered.
Then, like a whisper against his consciousness, a glowing blue panel appeared before his eyes.
[Status]
• Name: Kiba Yuuto
• Race: Reincarnated Devil (Low-Class)
• Age: 16
• Affiliation: House of Gremory
• Title: Knight
• Attributes:
• Strength: 38
• Agility: 52
• Endurance: 34
• Intelligence: 41
• Magic: 29
• Sacred Gear:
• [Sword Birth] - (Ability: Create and manipulate demonic swords.)
• Skills:
• Swordsmanship (Advanced)
• Magic Control (Intermediate)
• Strategy (Beginner)
[System Functions Unlocked: [Develop] | [Status]]
Kiba — or rather, the soul now inhabiting him — exhaled slowly, reading each line carefully.
"Sword Birth..." he mused. One of the coolest Sacred Gears in the series, capable of manifesting countless demonic swords.
But more importantly, now that he had the [Sacred Gear Developer System], he could upgrade it beyond its canon limits.
And judging from the timeline he remembered, there was about a week left before Issei Hyoudou's story — and all the madness that would follow — truly began.
"I have time... but not much."
If he wanted to survive — no, if he wanted to thrive in this chaotic world — he couldn't stay passive.
He needed to get stronger. Smarter. Better.
And it would start now.
Morning light poured through the windows of the Gremory dorms. The place was eerily quiet, most members out handling their own business.
He stretched, feeling the natural strength of his new body, then stood before the mirror.
A surge of determination burned in his chest.
"This time..." he thought, clenching his fists, "I won't just be a pawn. I'll carve my own fate."
The system responded, almost as if hearing his resolve.
[Quest Generated: Unlock "Balance Breaker" for [Sword Birth]]
[Reward: Access to [Develop] Feature.]
"Balance Breaker..." Kiba's lips curved into a grin.
Normally, achieving Balance Breaker — the ultimate form of a Sacred Gear — took years of intense training or extreme emotional upheaval. But with his knowledge and the System, he had an edge.
"Alright," he said aloud, his voice steady. "Let's get to work."
[Training Grounds – Gremory Mansion]
Kiba stood in the center of a wide, open field behind the mansion, sword in hand.
The training area was usually reserved for sparring and honing abilities, but today, he had it all to himself.
He took a deep breath and closed his eyes.
Visualize. Manifest. Create.
From the core of his being, he summoned the power of [Sword Birth]. A dark light gathered around his hand, taking shape.
CLANG!
A demonic sword, black as night and pulsing with crimson veins of energy, formed in his grasp.
"Not bad," he muttered, admiring his own craftsmanship.
But creating swords wasn't enough. He needed to push his abilities to their absolute limit — to force the Sacred Gear to evolve under pressure.
He summoned another sword. Then another. And another.
Dozens of blades materialized around him, floating midair, spinning slowly like a deadly halo.
"Alright... let's go!"
With a shout, Kiba launched himself forward, swords flying behind him like guided missiles.
He moved through imaginary enemies, slashing, dodging, weaving — pushing his speed, strength, and control beyond what even the "original" Kiba would have dared.
Minutes turned into hours.
Sweat poured down his brow. His muscles burned. His magic reserves thinned dangerously.
But he didn't stop.
Every movement was a challenge against his limits. Every moment was a battle against the clock.
He had to succeed before the story began. Before fallen angels arrived. Before the dangerous battles that would decide life or death.
Just as his body threatened to collapse, the System chimed.
[Congratulations! Conditions to trigger Balance Breaker met.]
[Would you like to initiate Balance Breaker Awakening?]
[Y/N]
"YES!" he roared mentally.
The world around him twisted — the demonic swords shuddered, then shattered into pure energy.
A massive surge of power exploded from his body, sending shockwaves across the training field.
In the center of the storm stood Kiba, his body surrounded by an aura of shimmering silver and deep crimson.
His Sacred Gear had transcended its limits.
[Balance Breaker Unlocked: Sword Birth – Eternal Armory]
• Ability: Instantly manifest a limitless array of specialized demonic swords, each with unique enchantments or curses.
[Develop] Function Unlocked!]
[Would you like to develop a new feature for your Sacred Gear?]
Kiba fell to one knee, panting, a wild grin on his face.
"Balance Breaker... achieved." he gasped between breaths. "Now, let's see just how far I can push this."
The journey had just begun.
He wasn't just a Knight anymore.
He was a creator.
A force that would shape his own legend.
---
This Fanfic Is Purely Written By An AI If you have a complaint about how chatgpt writes then go and search: chatgpt.com and vent your anger by telling them all your complaints :v