Nate was walking through the halls of Y Academy with Fumika and Hailey, casually explaining what had gone down during the Rating Game.
"And then Koneko finished him," Nate said, sipping his drink. "One punch. Clean. Absolute humiliation."
Hailey burst out laughing. "No way. I really missed the good part."
Fumika shook her head. "That poor Phoenix. Losing to a Devil was bad enough—losing to a single punch?"
Nate smirked… then suddenly stopped.
"…You can come out now," he said calmly, not even turning around. "You've been tailing me since day one. We can sense you."
There was a sharp, startled sound from behind the wall.
"E–eep!"
A girl slowly stepped out from behind a pillar, clearly flustered.
She had long pink hair, bright green eyes, and fair skin. She wore the Y Academy uniform, a silver Rosario cross hanging from her neck. Her figure was undeniably curvy, yet her posture and expression screamed innocent, almost airheaded.
[Insert image of Moka Akashiya]
She nervously fidgeted with the hem of her uniform.
"I–I'm sorry! I didn't mean to get caught…" she said quickly, bowing slightly. "I just thought you wouldn't notice…"
Hailey raised an eyebrow. "Cute and a stalker. Bold combo."
Fumika leaned closer to Nate. "She's not human. Not even close."
Nate finally turned to face her, eyes sharp but not hostile.
"You've been following me since the first day," he said evenly. "You're not in my class. You're good at hiding—but not that good."
Moka froze.
"…Y-you knew?" she asked softly.
Nate nodded. "Yeah. And considering that seal around your neck…" His gaze flicked to the Rosario. "…I'm guessing there's more to you than you're letting on."
The hallway pressure subtly changed.
For just a split second—
Something ancient stirred beneath Moka's smile.
And somewhere deep inside her, a voice whispered:
'He's dangerous.'
Moka hesitated, fingers tightening around the Rosario.
"C-can you…?" she started, unsure how to finish.
Nate looked at her, completely unfazed.
"Vampire?" he said casually. "Yeah. I know."
Moka stiffened.
"I hang out with Succubi, Yokai, two Yuki-Onna, a Nine-Tails, and a Mermaid," Nate continued, ticking them off like a grocery list. "You're honestly one of the more normal ones."
Fumika nodded seriously. "Statistically speaking."
Hailey grinned. "Welcome to the club."
Moka blinked. "…Oh."
For a brief moment, the world shifted.
Deep inside her, something stirred.
A colder presence. Sharper. Older.
So… this is him.
Inner Moka's voice echoed softly in her mind, calm and predatory.
'Strong. Calm. No fear. No disgust.'
Her gaze sharpened for a split second—eyes glinting crimson beneath the seal—before the warmth returned.
'He's strong', Inner Moka thought, a faint smirk curling unseen.
'I like him.'
Moka shook her head lightly, cheeks flushing. "S-sorry! I just—most people freak out when they find out…"
Nate shrugged. "Monsters don't bother me. Hypocrites do."
That made her smile.
A real one.
Nate's eyes lingered on the rosary at Moka's chest.
"That seal is impressive," he said honestly. "Who put it there?"
Moka blinked, clearly surprised—not many people noticed that.
"Thank you," she said softly. "My mother did. It's… to control my powers."
Nate nodded, accepting it immediately.
"Makes sense."
He took another step back, giving her space, but his thoughts were already racing.
'So it's the same, he thought calmly. Rosario + Vampire canon held even after crossing into DxD. Her origin didn't change.'
For just a fraction of a second, his gaze sharpened—not predatory, not fearful—analytical.
And something behind the seal noticed.
Deep within, Inner Moka stirred again.
'He didn't flinch.
Didn't pry.
Didn't look at me like I was broken.'
A quiet, approving hum echoed in her mind.
'Interesting…'
Fumika glanced between them. "You're taking this very well, Nate."
He shrugged. "Seals like that are usually put on someone who's too dangerous to be allowed to roam freely."
Moka stiffened—
"—or too precious to be lost," he finished.
Her eyes widened slightly.
Hailey smiled. "Yeah. Definitely his thing."
Moka looked down at the rosary, then back up at Nate.
For the first time since enrolling at Y Academy, she didn't feel like she was hiding.
And beneath the seal…
Something ancient, cold, and powerful was patiently watching him back.
The lunch bell rang, echoing through the halls.
Nate gestured for Moka to follow. "Come on. You might as well meet the chaos early."
Moka nodded and walked beside him, still clutching the rosary at her chest.
At the cafeteria table, Mizore, Blizzaria, and Kurumu were already seated.
Kurumu was the first to look up.
Her smile formed instantly—then froze.
Her eyes snapped to Moka.
The air around her rippled faintly, wings twitching once.
"…Huh?"
Mizore tilted her head. "Kurumu?"
Kurumu leaned forward slightly, pupils narrowing.
"There's something wrong," she muttered. "No—dangerous."
Blizzaria frowned. "I don't feel hostility."
Kurumu swallowed. "That's the problem. Whatever she is… it's asleep."
Moka stiffened, instinctively stepping closer to Nate.
Kurumu's gaze locked onto the rosary.
"…That seal," she said slowly. "That's not hiding a monster."
She smiled, sharp and impressed.
"It's locking up an apex predator."
Nate sighed like this was the most normal thing in the world.
"Yeah. That checks out."
Kurumu whipped around. "YOU KNEW?!"
"I had a strong suspicion," he said calmly, pulling out a chair for Moka. "She's harmless right now."
Moka blinked. "R-right now?"
He glanced at the rosary again.
"That seal is good craftsmanship," Nate said casually, like he was talking about a phone case.
"But it's inefficient. Bleeds energy. Causes emotional instability."
Everyone at the table froze.
Mizore slowly asked, "…You're not thinking what I think you're thinking."
Nate shrugged. "If she wants, I could upgrade it someday."
Moka's breath caught.
"Upgrade… it?"
"Cleaner suppression," he continued. "Or a dual-state limiter. One that lets you access power safely instead of bottling it up."
Kurumu stared at him.
"…You're talking about rewriting a vampire seal like it's software."
Nate smirked. "That's basically what it is."
Blizzaria sipped her drink calmly. "You attract terrifying women."
Mizore nodded. "It's consistent."
Moka looked down at her rosary, then up at Nate—eyes shining with a mix of hope and fear.
"…You'd really do that?"
Nate smiled, warm and easy.
"Only if you ask."
And deep beneath the seal—
Inner Moka smiled back.
'I definitely like him.'
Elsewhere — Vampire Faction Territory
Deep within an ancient castle far removed from Kuoh—
A tremor rippled through the barrier network.
Not violent.
Not hostile.
Just heavy.
A noble vampire paused mid-step, pressing a hand to the wall.
"…That presence again."
Another elder looked up from a crystal screen.
On it played a recorded broadcast.
Rias Gremory's Rating Game.
The footage replayed:
Issei's Balance Breaker.
Akeno turning the battlefield into a natural disaster.
Koneko one-punching Riser into unconsciousness.
The camera briefly caught the viewing room.
And him.
A young man, relaxed, holding Kunou, drinking coffee like this was a school sports festival.
One of the elders hissed.
"…That human."
A higher-ranking vampire narrowed her eyes. "Not human."
The screen shifted—new live feed.
Y Academy cafeteria.
Moka Akashiya sat at a table.
Laughing.
Relaxed.
Unsealed—but not breaking.
And seated right beside her—
Nate.
The room went dead silent.
A noble swallowed. "Princess Akashiya is… comfortable."
An elder's voice went cold.
"That only happens when she senses absolute safety."
Another vampire muttered, horrified,
"…Or something stronger than her."
The castle's sensors screamed warnings—
Yokai signatures.
Dragon residue.
Contracted beings in the dozens.
And layered over all of it—
Him.
One of the oldest vampires slowly exhaled.
"That boy trained the Gremory peerage."
Another added flatly, "And broke a Satan-class engagement without lifting a finger."
A third nodded. "And now our princess is voluntarily sitting beside him."
Silence.
Then—
A unanimous decision.
"We do not interfere."
A noble blinked. "At all?"
The elder glared.
"If you value your unlife, your lineage, and this castle—no."
Another elder leaned back, smirking faintly.
"Besides… if Princess Akashiya chose him."
She paused.
"…Then whoever tries to take her away will not be fighting a vampire."
The room darkened.
"They'll be fighting the man who makes monsters better at being monsters."
Somewhere Beyond Barriers — Akasha Bloodriver
A vast crimson chamber, floating between dimensions.
Water and moonlight intertwined around a throne carved from ancient crystal.
Akasha Bloodriver sat with her eyes closed.
Then—
A ripple.
Not danger.
Not fear.
Recognition.
Her crimson eyes opened.
"…So," she murmured softly, "the one my daughter has been circling… has finally revealed himself."
A mirror of blood formed before her, showing Y Academy.
Moka.
Laughing.
Relaxed.
And beside her—
Nate.
Akasha studied him carefully.
Not just his power.
But the way the world leaned around him.
Contracts layered over contracts.
Yokai bonds.
Dragon residue.
A king without a throne—but obeyed nonetheless.
Her lips curved into a knowing smile.
"The Yokai King," she said calmly.
She watched Kunou hop onto the table, watched Nate sigh internally, watched Moka's sealed power remain perfectly calm.
Akasha's smile widened.
"…Good taste, my daughter."
She folded her hands.
"He does not seek domination.
He does not cage monsters.
He makes them choose."
A pause.
"And more importantly…"
Her eyes softened.
"He keeps you safe without ever trying to own you."
The blood mirror faded.
Akasha leaned back on her throne, satisfied.
"A worthy son-in-law," she decided.
Then, almost amused—
"…And strong enough to survive my family."
---
Back at Y Academy — Cafeteria
Kunou suddenly slammed both hands on the table.
Everyone jumped.
She pointed directly at Moka.
"You!"
Moka blinked. "E-eh?"
Kunou puffed out her chest proudly.
"You're pretty. Strong. And you like Nate."
Moka went red instantly. "I-I—!"
Kunou nodded seriously.
"Approved."
The table went silent.
Kurumu slowly turned. "…Approved what?"
Kunou declared with absolute confidence:
"You can be future sister-wife."
BOOM.
Moka short-circuited.
"S-S-S-SISTER—?!"
Mizore tilted her head. "That escalated."
Blizzaria sipped her drink. "Fast even by harem standards."
Kurumu stared at Kunou.
"…You just recruited her."
Kunou beamed. "I'm efficient."
All eyes turned to Nate.
He froze mid-bite.
Internally:
'…So another girl.'
Externally, he sighed.
"…Kunou."
She looked up innocently. "Yes?"
"You can't just declare things like that."
Kunou tilted her head.
"But Mama Yasaka does it all the time."
Nate closed his eyes. "…Fair point."
Moka peeked at him, face still red, heart pounding.
"…D-do you mind?"
Nate looked at her—really looked.
Strong.
Sealed.
Trying to live normal.
He shrugged casually.
"Welcome to the chaos."
Moka smiled.
Somewhere very far away—
Akasha Bloodriver nodded in complete agreement.
Later That Day
Nate sat alone in his room.
No chaos.
No arguing.
No supernatural pressure pressing against the walls.
Just silence.
Then the air shifted.
A figure stepped out of nothing.
She was a rabbit yōkai, dressed in a sleek black-and-pink spy suit traced with green accents. Silver bunny-shaped buckles rested on her wrists, a hollow bunny emblem sat at her belt, and a headset with pink headphones and tiny yellow hearts covered her ears.
[Insert image of Agent M]
She straightened, professional but clearly pleased.
"I have your report, my King."
She handed him a tablet.
Nate took it and nodded.
"Good work, Agent M."
Her ears twitched. She smiled, tilting her head.
"And my reward?"
Nate glanced up, already standing.
"Yeah. I didn't forget."
He leaned in and kissed her on the cheek.
Agent M froze for half a second—then grinned, cheeks faintly pink.
"Worth it."
She vanished in a shimmer, leaving only a faint scent of ozone and sugar.
The Report
Nate sat back down and scrolled.
Birth registries.
Hospital records.
Spiritual census logs.
Yōkai observation reports.
Timeline cross-checks.
His eyes moved fast.
Too fast for a human.
Minutes passed.
Then—
He stopped.
Nate slowly lowered the tablet and exhaled.
"…So Tsukune doesn't exist in this universe."
The room didn't respond.
It didn't need to.
Truthfully, he'd suspected it for a while.
The moment Kurumu had started circling him.
The moment Mizore had chosen him.
The moment the story had bent—just slightly—around his presence.
That was why he'd sent Agent M.
Twelve days.
Every birth record in Japan.
Every anomalous human with supernatural proximity.
Nothing.
No Aono Tsukune.
Nate leaned back, staring at the ceiling.
'Seems like I took his place.'
Not stolen.
Not erased.
Just… replaced by circumstance.
He closed his eyes.
Somewhere out there, the world had adjusted around him—quietly, efficiently—rewriting fate to fit the Yokai King instead of an ordinary boy.
And if that was true…
Nate opened his eyes, calm and focused.
"…Then I guess I don't get to mess this up."
To be continue
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