Naruto world:
Naruto strolled through the grand halls of the Central Library of the Empire, a place that was both a physical and mental construct—one that transcended time and space. Massive golden pillars stretched towards infinity, lined with ethereal bookshelves that flickered in and out of existence, each shelf holding the accumulated knowledge of countless worlds and lifetimes.
The grand library was ruled by Ino, the Keeper of All Knowledge. She had long since surpassed her former self, evolving into a being who held the memories, experiences, and wisdom of every person in the empire. Every discovery, every technique, every battle—all were recorded in her mind. Even if she were to perish, her library would persist forever within the mental realm she had created.
At her side stood Eda, one of Naruto's newer wives.
Eda, a cyborg born from the DNA remnants of an ascended Ōtsutsuki, had power that even Ishiki himself could not compare to. Her ability to see the past and present of all beings in the multiverse made her the perfect complement to Ino's role. With her vast knowledge of parallel worlds, hidden powers, and forgotten histories, she was the key to understanding the deeper truths of existence.
As Naruto entered, Ino, dressed in regal golden robes with silver patterns resembling neurons, looked up from her massive floating tome. Her blue eyes glowed faintly with the light of infinite wisdom. She smirked, already knowing what Naruto wanted before he even spoke.
Eda, who lounged lazily on a hovering couch nearby, gave him a flirtatious glance before grinning, "Did you come here to see me, or are you about to ask for another ridiculous upgrade?"
Naruto chuckled and shook his head. "Both, actually."
Naruto took a seat across from them and waved his hand, summoning a golden scroll of data he had gathered from Illya's world. The scroll floated into Ino's hands, who scanned through it instantly, her mind absorbing the runes, magical laws, and records of the Throne of Heroes.
Eda peered over Ino's shoulder, reading with mild amusement. "Ah, so this is the world where 'heroes' become divine concepts, fueled by belief."
Naruto nodded. "Exactly. And that gave me an idea—we can apply a similar concept to our own empire."
Ino raised an eyebrow. "You mean integrating techniques into a system-based law? Letting warriors access skills they've never learned just by paying a certain cost?"
"Yes," Naruto confirmed. "But I don't just want it to be a normal system—I want it engraved into the very fabric of our universe. If we do this, the warriors of our empire won't just be limited by their own training. If someone is desperate, they can call upon a technique they don't understand but still use it at a certain cost.
More importantly, if enough people believe in these skills, they will evolve beyond their original limits."
Eda smirked. "So, you're basically saying that by linking the system to the faith of the people, it will act like a spiritual amplifier? The stronger the belief in a technique, the more powerful it becomes, even if the original user dies?"
Naruto grinned. "Exactly. Imagine a world where Rasengan, Chidori, or Kamui continue to evolve, even after their creators are gone. A place where anyone—even a child or a common soldier—can borrow the strength of legends for a moment."
Ino leaned back, closing the scroll. Her mind processed countless possibilities within seconds. "To do this, we'd have to integrate a consciousness-based network into reality itself. We'd need a way for people to access this 'library of techniques' without disrupting their natural growth."
Eda chuckled. "And you're suggesting I be the connection between the library and the people, huh?"
Naruto shrugged. "You're the only one who can see everything in the multiverse. You'd make the perfect regulator."
Ino nodded. "And I would manage the memory storage, ensuring that only approved techniques are accessible."
Eda stretched lazily. "Well, it's an interesting idea… but how will you handle areas outside the engraved system? If someone leaves our universe, will they lose access?"
Naruto thought for a moment. "Only if the universe itself doesn't recognize the system. So, we'll need to find a way to make it self-sustaining, like a divine law."
Ino smiled, her mind already working on the solution. "We could create an anchor point—an unbreakable mental link between the library and reality. No matter where someone is, as long as they have faith in the system, it will continue to function."
Naruto's smile widened. "Then let's do it."
Ino and Eda stood up, both closing their eyes as they reached out with their boundless minds.
Ino's spiritual power expanded, weaving an unbreakable network of mental connections that linked the Central Library to the consciousness of every living being in the empire.
Eda's power over all knowledge across the multiverse surged, embedding the system into the fabric of reality itself. Every technique, every skill, every form of combat was now available—provided the user met the conditions to use them.
Across the empire, warriors felt the change instantly. Some gasped as new information flooded their minds. Others, sensing the potential, immediately began praying to the system, causing certain techniques to grow stronger.
A new era of combat had begun.
Ino smirked. "Done. The system is now part of the universe."
Eda stretched, satisfied. "Now let's see how long it takes for people to break it."
Naruto laughed. "If they can break it, it just means they're strong enough to deserve it."
With that, the Universal Combat System was born, a living, evolving network of power that would continue to grow for eternity.
With the Universal Combat System successfully implemented, the trio—Naruto, Ino, and Eda—took a moment to relax in a secluded chamber within the Central Library. This was a private space, away from the endless archives and floating data constructs, filled with soft cushions, a warm atmosphere, and the sweet scent of sakura blossoms drifting through the air.
Naruto stretched his arms and flopped onto a luxurious, oversized couch, sighing in satisfaction. "Whew, that was a lot of work! I deserve some pampering now."
Ino smirked, rolling her eyes but still walking over to sit beside him. "You say that as if you did all the hard work. Eda and I did most of the processing!"
Eda, who had already made herself comfortable, lazily leaned against Naruto's other side, resting her chin on his shoulder. "True, but he was the mastermind behind it. You should reward him, Ino~"
Ino huffed, but a playful smile curled her lips as she wrapped her arms around Naruto's waist, pulling herself closer. "Fine, fine. Since you're my beloved husband, I'll spoil you a little."
Naruto grinned and shifted, pulling both women closer—one arm draped over Ino's shoulders, the other resting around Eda's waist. "That's more like it~"
Eda let out a small giggle before pressing a soft kiss against Naruto's cheek. "You're lucky you're so charming."
Naruto turned his head, capturing her lips in a brief but sweet kiss, making the cyborg woman blush slightly despite her usual confidence.
Not wanting to be left behind, Ino smirked before cupping Naruto's face and pulling him into a deep kiss of her own. Unlike Eda's teasing peck, Ino's kiss was slow and passionate, filled with years of love and understanding.
When they pulled away, Naruto chuckled, rubbing the back of his head. "Damn… maybe I should come to the library more often if I get this kind of treatment."
Ino lightly smacked his chest. "Then do some actual work here once in a while, not just dump all the responsibility on me."
Eda pouted slightly. "Yeah, don't just come here for kisses, even if they're nice."
Naruto gave them both a playful squeeze. "Alright, alright. I'll try to help out more… but first…" He suddenly flipped them both onto the couch, pinning them playfully beneath him.
"Let me enjoy my break a little more~"
Laughter filled the chamber as the three indulged in some much-needed cuddling and affection, basking in the warmth of their love and the quiet satisfaction of their latest achievement.
At that moment, Naruto wasn't an emperor or a warrior. He was just a man, happily spoiling and being spoiled by his beloved wives. 💕
DXD
Rias had expected her first real conversation with Naruto to be overwhelming—after all, he was a man who had casually flipped the balance of power in the supernatural world like it was a board game. However, what she hadn't expected was… how relaxed he was.
There was no sense of superiority or condescension in his words, no attempt to rub his strength in her face. If anything, his attitude toward her was casual, even friendly.
When he ruffled her hair and spoke to her as if she were a little sister, Rias felt a mix of emotions—embarrassment, gratitude, and… curiosity.
His words about their world had been troubling at first. Was he truly someone who could read their future? But when he reassured her, she found herself wanting to believe him.
Her heart felt lighter, freer, and she couldn't deny it was because of Naruto's intervention. He had done something no one else had—changed their world not through war, but through pure, ridiculous charisma.
When Naruto brought up Issei, Rias found herself smiling, the old irritation fading.
"He is enjoying his victory with the new girls, seems to have gotten fans after this battle."
She didn't even feel jealous—only amused. Issei was Issei. The idiot had earned his rewards.
Then came Naruto's next question, a teasing smirk on his face:
"What about you? Aren't you going to stake your claim before dragon boy becomes too loose?"
Rias narrowed her eyes playfully. "They are just his concubines in the end. He knows who his Queen is."
Naruto laughed. "You got some confidence, I like that."
Rias, for once, didn't feel the need to justify herself. She was the Queen, and that was all that mattered.
When Naruto offered missions to help her comrades, Rias found herself relieved. Having a clear direction was reassuring, and starting with Koneko made sense.
She had never questioned what she had been told about Kuroka before, but if Naruto said the opposite was true, she believed him.
There was something comforting about his certainty.
As he teased her about being too passive, Rias couldn't help but chuckle. "Even Issei is doing better than you," huh? She supposed he had a point.
Then, as suddenly as he came, Naruto was gone, off to do whatever madness he had planned next.
For a moment, Rias felt genuine concern for the students of Kuoh Academy.
Then she shrugged. "Not my problem."
She leaned back on the couch, scrolling through her phone. Maybe she had been overthinking things too much.
Contacting Yasaka
"Miss Yasaka, could I ask for your assistance in helping a friend with chakra and Senjutsu?"
She had expected Yasaka to be hesitant, or at least demand something in return. But the response came almost immediately.
"You can come to Kyoto, and I will help you."
Rias blinked in surprise. That was… easy.
Across the city, Yasaka read the message with a thoughtful expression.
'For world peace.'
Naruto had changed everything, even the way she saw Devils.
Her own power had grown, her understanding of battle had expanded.
Naruto casually walked through the halls of Kuoh Academy, hands in his pockets, whistling a happy tune. The library had been fun. He had caused a little chaos, played around with some students, and given them existential crises over the meaning of life. Classic Naruto.
Just as he was about to leave, he was intercepted by none other than Sona Sitri.
Her sharp gaze and formal posture screamed "student council president energy."
"How may I help you?" Naruto asked in a perfectly polite tone.
Sona narrowed her eyes slightly. "Were you the one making a mess in the library?"
Naruto put on his most innocent expression. "No, I was using the computer for educational purposes."
Sona gave him a look that practically said, "I don't believe you."
"I hope you are not lying, as the students will tell us the details."
Naruto simply smiled. "I am sure."
Sona wasn't convinced but decided to change tactics. This man wasn't just some normal troublemaker. His presence felt off.
"Who are you?"
Naruto tilted his head, then sighed dramatically. "Naruto Uzumaki. People call me Emperor of Mankind."
And just like that, his playful facade faded. His young disguise melted away, revealing his true, older self.
Sona's entire demeanor shifted. He wasn't human. Not even close.
"I am a friend of Rias; you can ask if you want. We can walk toward the club room and talk on the way."
Sona nodded slowly. She had heard of him, of course. The mysterious, absurdly powerful figure that had shaken up their entire world.
The History Lesson
As they walked, Naruto glanced at her. "You seem like an intellectual. Are you interested in human history?"
Sona straightened her glasses. "I am, but I haven't followed it very well. I've been busy."
Naruto stopped walking and turned to her, his expression solemn.
"Then you must begin a reading program immediately so that you may understand the crises of our age."
Sona blinked. What?
"Begin with the late Romans, including Boethius, of course. Then you should dip rather extensively into early Medieval history. You may skip the Renaissance and the Enlightenment—that is mostly dangerous propaganda. Now that I think of it, you had better skip the Romantics and the Victorians too. For the contemporary period, you should study some selected comic books."
Sona just… stared at him.
"You're fantastic."
Naruto nodded sagely. "I recommend Batman especially, for he tends to transcend the abysmal society in which he's found himself. His morality is rather rigid, also. I rather respect Batman."
He spoke with such seriousness, such conviction, that Sona found herself actually considering his words.
Meanwhile, Rias—who had been eavesdropping—covered her mouth to stop herself from laughing.
Sona had no idea she was being played.
Naruto, meanwhile, just kept walking, nodding in satisfaction.
"Yes… Batman."
Chat Group:
Naruto stood at the center of the Heroes Chat Group, watching the chaotic stream of messages flood in.
"Good news, guys! I have taken over Izuku's and Gon's world. Soon, I will get Luffy's and Tsuna's."
You'd expect panic. Fear. Resistance.
Instead…
Izuku: "The internet doesn't care about shit. If the world was about to end, this would be their reaction: 'Finally, the cure to my depression.'"
Tsuna: "If I kill time, will it make me immortal?"
Gon: "The first man to milk a cow… what was he trying to do?"
Ichigo: "If you are clean after a shower, why do towels get dirty?"
Luffy: "Is an argument among two vegans still called a beef?"
Issei: "Will we ever know if traps are gay?"
Gohan: "If Cinderella's shoe fit perfectly, why did it fall off?"
Naruto looked at the screen. Then at the sky. Then back at the screen.
"This is why I love you guys."
There was no resistance. No dramatic speeches about "fighting for their world." No "I will never forgive you, villain!"
Just memes, dumb questions, and complete apathy toward their own universes being absorbed into Naruto's empire.
It was both hilarious and terrifying.
Naruto leaned back, smirking. He could literally erase them all if he wanted, but instead, they all chose to embrace the madness.
And honestly?
That was probably the correct choice.