At noon, Arianna nervously peeked into the grand dining room, her voice trembling as she called out, "Lunch is ready, everyone!"
Akiyama Ren, the newly crowned Seventh Godslayer, strode in and took the main seat at the table like a monarch presiding over his court. His golden eyes swept across the meal laid before him, his expression turning a shade colder.
The table was packed with meticulously prepared Japanese dishes: miso soup, grilled saba, tamagoyaki, and rice balls. But instead of excitement, Ren looked... disappointed.
Arianna, ever the attentive maid, immediately panicked. "L-Lord Ren, d-do you not like it...?" she asked, her voice quivering.
Ren didn't scowl or sigh. His tone was calm, devoid of emotion—but somehow that made it more intimidating. "I'm not really fond of Japanese food. Can you cook Chinese cuisine? If you can, I'd prefer you make that from now on."
"Y-Yes, of course! I'll go study it right away!" Arianna bowed deeply, inwardly blaming her grandfather, whose love for all things from Japan had influenced her cooking style.
Lucretia Zola, the legendary Witch of Sardinia, raised an intrigued brow, her eyes lighting up like she'd stumbled upon a lost artifact. "Lord Ren, are you from China then?"
To the magical community, Akiyama Ren was still a mystery—his rise to power sudden and shrouded in secrecy. Many speculated about his origins, but none had definitive answers. If a Godslayer hailed from a certain country, it was a matter of global political weight.
Judging from Ren's East Asian features and distaste for Japanese food, Lucretia's deduction was swiftly narrowing in.
Ren smirked, seemingly amused by her reaction. "Yeah, I'm from China."
Lucretia's eyes widened slightly, her thoughts spinning.
China already had a Godslayer—the famed Luo Hao, King of Martial Arts. Now another one had emerged?
"One mountain cannot accommodate two tigers…" she muttered internally, her heart racing. Two Godslayers from the same country was a powder keg waiting to blow.
Ren caught the change in her expression and chuckled lightly. "Relax. I've already taken control of the magical societies in South Europe. I have no interest in challenging Luo Hao for dominance in China."
Of course, that was a lie.
His Flügel Army and Ex Machina Army were already prepared to cross dimensions and march upon this world. He simply hadn't pulled the trigger—yet.
Lucretia let out a relieved breath. "That's a relief. After all, the King of Martial Arts is... well, she's the strongest of the Godslayers, isn't she?"
Ren's golden eyes narrowed. "Oh? You think I can't beat Luo Hao?"
"N-No, of course not! You're obviously the strongest, Lord Ren!" Lucretia corrected herself hastily, her voice an octave higher.
Ren let it go with a sly smile, then suddenly leaned back in his seat and asked, "Hey, Lucretia. Have you ever heard the saying: 'One mountain cannot accommodate two tigers, unless one is male and the other female'?"
Lucretia nearly choked on air.
Her cheeks flushed crimson. That line... Did he mean what she thought he meant?
Was Lord Ren planning to conquer Luo Hao not just in battle, but... romantically?
Insane! Unthinkable! And yet… her mind wandered to the female attendant at Ren's side who had easily slain the King of Swords. If someone that powerful served Ren, perhaps he truly had the strength to defeat even the mighty Luo Hao.
And if that happened... would Luo Hao become his woman, too?
If so, then she, Lucretia, would become... sisters with Luo Hao?
Her heart pounded at the absurd yet thrilling possibility.
After the slightly awkward but filling meal, Ren returned to his room. There was work to be done.
His mind turned toward his Authorities—the divine powers he'd earned from slaying Heretic Gods. He had a total of eleven now, including the Eastern God of War, whose Authority alone counted as ten.
That gave him the equivalent of twenty Authorities!
It was time to see if they could be fused into something greater. He called upon King of Wisdom, the Authority that had guided many of his strategic victories.
But King of Wisdom delivered disappointing news: the number of Authorities Ren held was not yet sufficient. Fusion wouldn't yield a qualitative leap in power—only a combination of effects without true transcendence.
Ren clicked his tongue in mild irritation.
"Not enough, huh? Then I guess I'll just have to devour more..." he muttered.
In this world, there were seven other Godslayers and an untold number of Heretic Gods. All were potential targets.
And if it came to it... he would even go after the Last King, the ultimate existence sealed above the skies of Japan.
But the Last King's power was said to correlate with the number of active Godslayers. The more Godslayers alive, the stronger he became.
A wicked grin crept onto Ren's face.
"Then it's simple," he whispered, a dangerous gleam in his eyes. "I'll just thin the herd."
Luo Hao and Madame Aisha could stay. They had their uses.
But the rest?
With that, Ren stepped out from Lucretia's villa. His figure lifted into the sky, aura blazing like a divine star. His magical energy rippled across the atmosphere as he hovered above Sardinia, his domain expanding.
In a split second, he activated his Divine Sense, stretching it across the entire European continent like an invisible net. At the same time, his Mystic Eyes—powered by Spiritual Vision—scanned through layers of magical concealment.
"Gotcha," he said with a feral grin.
With a snap of his fingers, he vanished in a burst of prismatic light, his teleportation ripping space like tearing paper.
He reappeared above a brooding ancient castle nestled deep in the Balkan Peninsula—ominous and surrounded by thick forests. This was the lair of Sasha Dejanstahl Voban, the old monster among the Campione. Voban had walked this world as a Godslayer longer than even Luo Hao. Known for hoarding Authorities like a dragon with treasure, his power was legendary.
Ren floated high above the castle, eyes cold. From his system space, he summoned a five-star greatsword—Skyward Pride—borrowed from the Genshin arsenal. A streak of azure light shimmered as the blade materialized in his hand.
Without ceremony or flourish, he slashed downward.
No skills. No spells. No Authorities. Just raw divine force channeled into one devastating strike.
The crescent slash tore through the air like a heavenly judgment, splitting clouds and space itself. In one blow, the entire ancient fortress was obliterated—reduced to ash and shattered stone.
Marquis Voban didn't even have time to react.
—But death wasn't enough to kill a Campione.
From the rubble, a low rumble echoed. Suddenly, a black vortex exploded from the ground, and with it, a monstrous roar.
A jet-black dragon, stretching over thirty meters long, burst forth into the sky—its scales gleaming with ancient magic. This was Voban's resurrection Authority: Netherworld Black Dragon, usurped from the Earth Mother Goddess Inanna.
In this form, his soul left his human body and took on a draconic avatar, capable of immense destruction. The dragon's body could regenerate endlessly, and even if destroyed, Voban could reconstitute himself using cursed energy.
Hovering opposite Ren in the sky, the black dragon snarled, "Who dares attack this old one?! State your name, boy!"
Ren yawned and stretched his sword arm. "Tch. So noisy."
He slashed again—but this time, he infused his blade with two Authorities: Sword of Concealment and Ripping Silver Hand.
Dozens of radiant slashes burst from the sword—phantom lights that severed all things.
Voban's dragon eyes widened in alarm. "That Authority... King of Swords, Doni's technique?!"
He tried to dodge, but Ren raised his left hand, forming a hand seal with his index and middle fingers crossed.
"Domain Expansion... Innfinite Void!"
The space around them warped. Voban's senses collapsed as he was forcibly dragged into the domain.
Within the void, time and space stood still. Ren's version of Domain Expansion wasn't like Gojo Satoru's—it was backed by the divine power of a Godslayer fused with a Spirit Race. It guaranteed absolute hit.
The moment Voban entered, his mind was overwhelmed with torrents of meaningless data—sensory overload crashing his thought process.
He hesitated for a split second.
Ren struck.
The luminous sword slashes, each imbued with the Ripping Silver Hand's severing Authority, tore through the black dragon's body like paper. Voban's transformation was shredded—his draconic flesh minced into glowing black mist.
Then came the final act.
"Authority Devour: Gluttony King!"
Ren's body shimmered with crimson light as the devoured remains were absorbed into his being.
[Authority Analysis Complete: Obtained Authorities—Tempest, Sodom's Eye, Greed of the Wolves, Netherworld Black Dragon, Holy Communion of Blood, Chanting of Cursed Fire Sin Servant Cage, Severing the Knot of Fate, Ragnarok Wolf]
A total of eight Authorities.
The King of Wisdom's voice echoed in his mind.
"Assimilation complete. Ten distinct Authorities harvested."
A devilish grin spread across Ren's face. "Yare yare daze... Voban-san really was a treasure trove of Authorities. As expected from the crusty old man with the most Authorities among the Campione."
Without wasting a second, Ren teleported back to Lucrezia-san's villa in Sardinia. He hovered in mid-air, golden magic circuits flickering through his skin like starlight, and began the process of Authority integration.
First to be fused was Sodom's Eye into his innate Divine Eye. This eye was no ordinary mystic vision—it was a transcendent ocular skill Ren had forged by merging the Six Eyes, the Witch's Eye, and the God's Gaze obtained from his ascension as a God Spirit. Now enhanced further, it held the all-seeing qualities of future sight, x-ray perception, insight detection, illusion breaking, and now—
"Saltification," Ren muttered, his pupils briefly glowing with an eerie silver hue. "I can literally turn people into salt now… That's metal."
One glance. One fate. Turned to salt like the ancient cities punished by divine wrath. And this power? Now baked into his body as a passive ability.
Next, Ren raised Skyward Pride above his head. With a solemn incantation, he fused Sword of Concealment, Ripping Silver Hand, Severing the Knot of Fate, and the Golden Sword Avatar from the Eastern God of War into one supreme Authority—
Sword of Beginning and End!
A black-and-gold longsword manifested beside him, its blade humming with cosmic vibrations. This sword didn't just cut. It could sever space, time, causality, divinity, karma, and even the concepts of existence itself.
"Sugoi… This is no longer just a sword. It's a cosmic eraser. One swing, and poof—entire galaxies are gone," Ren whispered in awe, stroking the edge reverently.
Without even using divine power, this Authority could cleave an entire planet in half. If he empowered it with divine energy?
One Sword = One Galaxy.
Akiyama Ren was now approaching galaxy-level destructive capacity.
But he wasn't done.
Next came the fusion of his innate traits: God's Blessing, Infinite Regeneration, and Immortal and Undying, along with the Authorities: Steel Blessing, Netherworld Black Dragon, and the Youth and Aries Avatars from the Eastern God of War.
From this terrifying amalgam, a new Authority was born—
Eternal!
The moment the fusion was complete, Ren felt the universe bend slightly around him. His very concept of existence had changed. Now, even if his body and soul were annihilated, he would still resurrect in any of the worlds he'd traversed:
The Main World
Type-Moon Universe
Campione! Universe
Noragami Universe
DanMachi Universe
No Game No Life Universe
"Even if I get erased… I can respawn wherever I please. Cheat-kun just went full god mode," he chuckled.
Better still, in worlds where he had integrated the Eternal Rule, he no longer needed the Stargate to travel. He could freely shift planes as if walking through a door.
This Authority didn't just make him immortal—it turned him into a universal constant.
His power level soared yet again. From quasi-galactic... To—
Quasi-Single Universe Level.
And still, he wasn't done.
Cracking his knuckles, Ren took a deep breath and initiated his final fusion. He combined:
Shikigami Summoning from Onmyōdō
Ten Shadows Technique from Jujutsu
Greed of the Wolves
Wolf of Ragnarok
and the Wild Boar Avatar of the Eastern God of War
Divine Familiars!
A circle of light appeared at his feet as nine Shikigami emerged behind him, now glowing with upgraded power levels. Demon Sword Princess and Takiyashahime had evolved from SSR to SP rank, while the rest had reached SSR tier.
"Tadaima~ My precious familiars, time to unleash your true might."
This Authority let Ren summon:
The Divine Beast Wild Boar
The Doomsday Demonic Wolf Fenrir
The Twin-Elemental Earth Wolf Beast of Darkness
And the Fantasy Species Abante Heim
But that was only the surface.
With Divine Familiars, Ren could forcefully contract any Youkai Beast, Spirit, Magic Beast, or even Divine Beast—so long as their strength was beneath his own.
Moreover, he could access all of his familiars' abilities.
"I basically became a walking Pokémon master with hacks enabled," Ren grinned, his arms folded.
His aura flared violently, divine patterns swirling around him as the world seemed to shudder under the weight of his evolution.
Four Supreme Authorities… One Unstoppable Existence…
And Ren wasn't even close to done. With more Authorities waiting, the hunger for power hadn't even started to wane.
"Let's keep going… This Demon King isn't satisfied yet. Fufufu…"