His eyes went wide."You… you can't do that!"
Rias leaned forward slightly, the cascade of her crimson hair spilling over one shoulder. Her tone was calm—dangerously calm—but the weight behind it was absolute."Oh, I can," she said. "And I just did."
Kazuma's fists clenched, knuckles bone-white."I'm still under contract with Lord Alvaris Balam! That means I'm under Gremory protection—devils don't break contracts!"
Rias's lips curved into a slow, cool smile."And we aren't."
Her gaze sharpened to a razor's edge."We honor our pacts, Tenjou. But perhaps you've forgotten the clause at the foundation of every agreement under our name…"
She reached for a leather-bound folder on her desk, flipping it open with deliberate grace. One slender finger came to rest on a single, elegantly inked line at the bottom of the parchment:
All contracts entered under the authority of the Gremory name remain binding—unless dissolved by the will of a devil who bears that name.
Her smile was faint. Almost pitying."And I," she said softly, "bear it in full."
Rias folded her hands beneath her chin."Exactly. We value contracts… but we value our authority more. Especially when someone acts against the family's interests."
He stared at her, his voice beginning to tremble."You… you're voiding it? Just like that?"
"Yes," she said without the slightest hesitation. "Effective immediately. Your contract with Lord Alvaris Balam is null. You no longer operate under the Gremory banner."
Kazuma's face drained of color."You're leaving me defenseless!" he snapped.
"That," Rias said, rising from her seat, her blue eyes cutting through him like glass, "is the consequence of overstepping. Be grateful I'm letting you walk out alive."
He froze, words dying in his throat.
"Now," she said, turning her back to him, "leave—before I reconsider the generosity I've shown you today."
________________________________________
As Eishi stepped into the cozy café set inside Class 1-B, the warm scent of tea and fresh pastries greeted him. Soft chatter filled the air, blending with the distant hum of festival music outside.
His gaze swept the room—then stopped.
There she was.
His mother sat alone at a corner table, elegantly enjoying a beautifully plated dessert. The sunlight streaming through the nearby window framed her in a gentle glow, making the moment feel almost unreal.
He approached with an easy grin."Hi, beautiful lady. Is this seat taken?"
She blinked, caught off guard—then giggled like a shy schoolgirl, a faint blush on her cheeks."O-Oh! Darling, please, have a seat. Order anything you like. It's Mom's treat, huhu~"
"Sure," Eishi said, pulling out the chair opposite her. "I won't hold back then."
He raised a hand toward the nearest maid."Hi, can I place an order, please?"
The maid turned—and froze when her eyes landed on him. A light pink crept up her cheeks."Y-Yes! Of course! Ano… what would you like to order?"
He gave his choices, and she quickly scribbled them down, sneaking glances at him before darting back to the kitchen, still flustered.
Eishi chuckled and turned back to his mother."So… where's Issei?"
"My son's become famous, huh!" she said with a proud smile. "Oh, Issei's on shift right now. I think he's in the kitchen—I haven't seen him serving tables."
Eishi smirked, imagining Issei hiding in the back to avoid attention."Pfft… maybe he's shy, Mom."
She laughed softly. "He always was, around girls."
They shared a quiet laugh together as the café's warmth wrapped around them. Outside, festival music and the sounds of clinking glasses drifted through the open windows.
After their meal, Eishi and his mother wandered through the festival grounds. They played games, watched student performances, even braved the haunted house—where his mom screamed louder than anyone else. The day was filled with laughter, the kind that made the weight on his shoulders feel lighter, if only for a little while.
But time, as always, slipped away too quickly.
By the time Eishi found himself back in the courtyard, it was nearly 7 p.m. The sky had deepened into twilight, the horizon still painted with the last strokes of gold from the setting sun. It was a quiet, suspended moment—neither day nor night.
He stood there for a while, staring at the sky.His mother had already gone home to prepare dinner, leaving him with one last hug and a gentle reminder not to be late.
He promised her he wouldn't.
But he stayed.
Waiting.
Below, the main courtyard had transformed into the festival's heart—flooded with bright lights, echoing cheers, and the voice of the host announcing winners.
If he'd taken first place in the talent competition, his name would be called soon. The prize would be his to claim.
But he had already made arrangements.
Winning didn't matter anymore—not after receiving the scholarship. At this point, it would only be a symbol.
Still… would he win? He thought he would. Maybe it was pride. Maybe it was the quiet certainty that hard work never betrays you. Or maybe it was simply knowing his own worth.
Either way, Issei would accept the prize in his stead.
Eishi closed his eyes.
Today had been fun—surprisingly fun—but beneath that lighthearted surface, something heavier lingered.
Devils.Fallen Angels.Youkai.
They were real.
Not myths. Not bedtime stories. Real… and dangerous.
And somehow, he was part of that world now.
Sona's words echoed in his mind—about Sacred Gears, about the long war, about the danger that came with power.
"Humans with Sacred Gears can rival even gods… and that makes them targets."
A slow, quiet sigh escaped him.
If what Sona and the others had said was true… then he couldn't afford to stay weak.
He had to be strong—stronger than anyone else.
Not for pride. Not for glory.
But to protect the people he loved.
His mind drifted back—
That conversation in the Student Council room.
"You said you checked my background," he had asked Sona, voice low. "I have a question… about my mother."
There had been a pause.
"Is she…?"
Sona's gaze had been steady, her answer certain.
"Yes. She's human."
The memory faded as the cheers below suddenly swelled, echoing across the courtyard.
The festival's final event had begun.
But Eishi didn't move. His eyes stayed fixed on the twilight sky as he exhaled slowly, the weight in his chest unshifting.
"System," he whispered.
Reality shimmered. A faint ripple—like glass bending and fracturing—flashed before his eyes.
The interface unfolded before him.
┌── SAMSARA FINIS SYSTEM ──┐
Name: Eishi Lucivar
Age: 17
Main Class: (B) Martial Artist – Mastery 65%
Subclass: (B) Singer – Mastery 70%
Point:22
Available Classes:
(B) Violinist – Mastery: MAX
(C) Pianist – Mastery: 84%
(C) Chess Master – Mastery: 73%
Unlockable Class:
(A)Dark Slayer – Mastery: 5% (LOCKED) - 20pts
[View Class Details?]► Yes
[CLASS: DARK SLAYER – Rank A]
Class Theme: A hybrid warrior born of both human and demonic blood, the Dark Slayer walks a solitary path forged in loss and tempered by pride. Having endured the sting of helplessness, he seeks absolute power—not to rule over others, but to ensure he never suffers such loss again.
Wielding a spectral blade forged from condensed soul essence, the Dark Slayer is a master of space, timing, and elegance. His fighting style is deliberate and refined—every movement stripped of excess, every strike precise, efficient, and lethal.
Through the manipulation of dimensional rifts, he can slip through space in an instant, appear behind foes without warning, or cut through reality itself—his blade arriving before the enemy even realizes he's moved.
Unlike warriors who rely on raw power or frenzied emotion, the Dark Slayer fights with a predator's calm. That same discipline makes him deadly… but also distant. With every step toward greater mastery, he drifts further from human connection—bound to a cycle where strength takes precedence over all else.
_____________________________________________
5%… Eishi frowned. From the description alone, it was clearly a combat-oriented class. Which meant… he had no idea how quickly mastery would rise.
Still, his mind was made up.
[Purchase – 20 pts?]► Yes
The interface faded.The world went dark—utterly, completely.
A low chuckle echoed through the void, smooth yet edged like steel.
"Hmph… so you're still alive, kid."
The voice carried a weight of familiarity that Eishi couldn't place.
"You've grown… but you're still weak. Just as before."
"Before?" Eishi asked, his own voice sounding small in the emptiness.
"We've met before?"
The man chuckled again—quiet, almost amused.
"We have. But now's not the time for stories."
"We'll meet again soon enough… after all, I still owe your father a favor."
A shape emerged from the black—a tall silhouette, impossibly poised. The faint outline of a long, high-collared coat shifted with unseen wind. His hair, silver-white, fell neatly back, catching glints of light from nowhere. A sheathed blade rested in one hand, its presence sharp enough to cut the silence.
His stance radiated control. Every line of his figure spoke of discipline, elegance… and danger held on a leash.
Before Eishi could speak again, the darkness shattered—
—and he was back in the rooftop, the interface gone, his heart pounding.
A rush of heat surged through his veins—raw, intoxicating. Every muscle in his body felt sharper, tighter, as if the world itself had slowed to match his pace. His heart thundered, but not from fear… from power.
Then—an itch. Sharp, insistent, right between his shoulder blades.
"The hell…? who is that and father? what with- " he muttered, reaching back instinctively—
Fwoop!
Something burst from his back. Air shifted, the sound deep and leathery, like a whip cracking in slow motion.
Eishi froze. His breath caught.
From the corner of his eye, he saw them—black, membranous, shaped like a bat's, stretching outward with a subtle gleam under the twilight sky.
"…Wings?"
His pulse spiked. He twisted, staring in disbelief. They moved when he thought about moving them, flexing instinctively like they'd always been there.
Recognition slammed into him like a hammer. He'd seen these before—twice, in fact. Once on Sona. Once on Tsubaki.
"No way…" he breathed. "These… are devil wings?!"
The realization clawed at his thoughts.
Eishi's breathing quickened, his mind racing as the leathery appendages twitched behind him.
Then… it clicked.
His eyes widened.
A hybrid warrior born from both human and demonic lineage…
He swallowed hard. "No… it can't be…"
END
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of First Volume
Hey guys, KK here!With this chapter, we've officially reached the end of Volume 1.
Next volume will dive straight into the High School DxD timeline—yes, that means Issei and all the familiar faces will finally step onto the stage.
I've had a lot of fun writing this first volume, setting the stage and building Eishi's world. Volume 2 is where the real DxD story kicks in, and I can't wait to explore how Eishi fits into it all.
I'll be spending some time planning out the flow for the next volume so it all connects smoothly, but don't worry—I'll still aim to release 1–2 chapters every week.
Thanks for all your support so far. You guys keep me motivated, and I hope you'll stick around for what's coming next!
— Kiwikawaiii