100 Years Later – The Peaceful Rule of Eden
The city of Eden shimmered beneath the golden afternoon sun, its towers humming with life and its streets filled with the quiet hum of progress. There were no wars to fight, no monsters lurking in the shadows—just peace, prosperity, and the occasional bureaucratic headache.
In the Royal Council Hall, two figures stood at the center of attention.
"Alright," Lira said, arms crossed, red eyes scanning the reports spread across the table. "So we've stabilized the eastern provinces, trade routes are secure, and the new educational system is rolling out on schedule."
She smirked. "I'd say we're doing pretty good for a couple of 'demigods.'"
Sara nodded beside her, adjusting her glasses. Her presence was quieter than Lira's, but no less commanding. The aura of [Sariel] surrounded her like a soft glow—divine authority wrapped in compassion.
"I'd agree," she said. "But we still need to address the housing shortage in the outer districts. We can't keep pushing people into temporary shelters."
Lira groaned. "Ugh, more construction? That's so boring compared to demon-slaying or monster hunting!"
Sara gave her a flat look. "We're not teenagers anymore, Lira. This is our battlefield now."
Lira waved a hand dismissively. "Yeah yeah. Still doesn't mean I have to like it."
A voice cut through the air like silk over steel.
"You wouldn't be saying that if you had to do this alone."
They turned.
Progenitor leaned casually against the doorway, arms folded, eyes calm and knowing. He looked exactly the same as he had a century ago—untouched by time, unburdened by age.
Sara smiled softly. "My lord."
He walked in, glancing between them with pride.
"Good work today," he said simply. "You're both making me proud."
Lira grinned. "Of course we are! Who else could run an empire this big without blowing anything up?"
I raised an eyebrow. "That remains to be seen."
Then he turned to Sara, noticing the subtle sadness in her eyes.
"You're thinking about them again, aren't you?"
Sara stiffened slightly, then nodded. "Yes... My parents. It's been a fifty years, but sometimes I still dream about them. About home."
She looked down at her hands. "I know it's selfish. I have everything I could ever want here. But sometimes... I miss the life I used to have. Even if it wasn't much."
Lira stepped closer, placing a hand on her shoulder. "Hey. You don't have to feel guilty for remembering them. They raised you. That matters."
Sara smiled weakly. "Thanks."
The Progenitor stepped forward, placing a gentle hand on Sara's head.
"You know..." he said, voice softer than usual, "you've always been my daughter, even if it wasn't official."
Sara blinked. "...What?"
He tilted his head, looking genuinely confused. "Didn't you realize that? You've lived here longer than most of my ministers. You eat dinner with us every night. You argue with Eve more than Lira does."
He smirked. "And you cry when I forget your birthday."
Sara blushed furiously. "I—I didn't cry!"
"You did," Lira confirmed, grinning. "It was adorable."
The Progenitor chuckled. "Anyway, I figured it was time to make it formal. No more ambiguity. No more 'honorary' titles."
I met Sara's gaze directly.
"Sara, will you let me adopt you? Officially?"
Silence fell.
Sara stared at him, eyes wide, lips parting slightly.
"You... want to?" she whispered.
He nodded. "I should've done it sooner. You've always been family. Just because you weren't born of my essence doesn't change that."
Tears welled in her eyes—not sadness, but joy.
"I would love that," she said, voice thick with emotion. "More than anything."
He ruffled her hair gently. "Then welcome to the family, Sara Eden."
Lira whooped, throwing an arm around her. "Now we really are sisters!"
Sara laughed, wiping her eyes. "I guess we are."
The Progenitor watched them for a moment, smiling faintly.
Time Skip – Rimuru's Arrival
Time flew by in the blink of an eye.
What felt like only a few centuries to me was, in truth, over 30,000 years since I first awakened as the Demon Progenitor . Eden had grown beyond anything this world—or even most others—could comprehend.
Cities floated above the landmasses, powered by divine reactors and stabilized with spatial magic.
AI-guided constructs patrolled the skies, maintaining peace and order.
Gravity-defying transit systems connected every corner of the continent.
Even the stars above shimmered with artificial constellations.
And yet, despite all that progress...
I was still just some guy who liked anime.
In My Office – Same Old Me
I lounged on my throne-like chair, feet up, scrolling lazily through my custom-built dimensional phone, watching episode twelve of That One Anime Where the Main Character Dies Every Episode But Comes Back Stronger.
Then—
<
'I don't know... is it the girls' birthday or something?'
<
'Your birthday?'
<
I blinked once. Then twice.
"Oh. Right."
I didn't move. Just kept watching the anime.
<
I sighed, pausing the episode. "Yeah, well. Let's leave him be—for now."
Eve materialized beside me, arms crossed, white hair cascading over her shoulders. "You're not even going to interfere?"
"Not yet," I said, stretching slightly. "Let him live his life. Let him make his own choices."
She raised an eyebrow. "So you're saying you won't influence anything at all?"
I smirked. "Not entirely. I might drop a few hints. A stray demon here, a bit of knowledge there. Nothing too direct."
"In other words—you'll meddle, but pretend you're not doing it on purpose."
"Exactly."
She rolled her eyes. "You're impossible."
I grinned. "But you love me anyway."
She huffed, then leaned against the armrest of my chair. "Fine. We'll let him grow. For now."
I nodded. "When before Falmuth attacks... that's when we'll start paying attention."
"And after that?"
"After that?" I chuckled. "After that, things get interesting."
I glanced out the window toward the horizon, where the city of Eden pulsed with life and power.
"One way or another, our paths will cross."
I paused, smiling faintly.
Time Skip – The Annual Vacation Begins
I finished signing the last document and set my pen down with a satisfying clink .
"Ugh... finally done," I muttered, stretching my arms above my head until something popped. "I think it's time for my annual vacation."
Before I could fully enjoy the thought, a familiar voice piped up from the right.
"Vacation? Can I come as well?"
Lira lounged on the table beside me, flipping through a book she probably stole from the royal library, her red eyes gleaming with mischief.
From my left, another voice followed.
"Me as well."
Sara sat upright in a chair, notebook already open and half-filled with calculations about where we might go.
I smirked. "Sure, sure. But this is gonna be a long vacation—brace yourselves to actually enjoy it for once."
Lira grinned. "Works for me. No training, no tests, no lectures?"
"Nope," I said, leaning back in my throne. "Just us, some fresh air, and maybe a few minor disasters along the way."
Sara flipped through her notes before pausing. "Oh, Father... there's something else."
She held out a report, her analytical gaze scanning the data.
"A new nation has emerged in the Forest of Jura—called the Jura Tempest Federation . Our satellites have been monitoring its growth. It's expanding faster than expected."
I raised an eyebrow. "Tempest Federation, huh?"
Lira sat up, suddenly interested. "Is that like... a monster nation or something?"
Sara nodded. "It appears to be a coalition of various races—ogres, goblins, orcs. Their leader is a slime named Rimuru Tempest."
That name lingered in the air like a whisper of fate.
I leaned forward slightly.
Lira tilted her head. "Wait, a slime? That's weird."
Sara added, "He's surprisingly powerful. His magic signature rivals low-tier demon lords. And he's forming alliances at an unprecedented rate."
I tapped my chin thoughtfully. Then I smiled.
"...Let's go exploring."
Both girls blinked.
"Exploring?" Lira repeated.
"Yeah. We've kept Eden hidden for too long. If we're going to make our presence known to the world... we might as well start with the newcomers."
Lira clapped her hands together. "Ooooh, do you think they'll freak out when they see us?"
"Possibly," I said, standing. "But more importantly—I want to see what this Rimuru is capable of."
Sara looked thoughtful. "You sound... interested."
I shrugged. "A slime leading a multi-racial federation? That alone is impressive. Throw in the fact that he's drawing attention from both the Holy Church and the Demon Lords... yeah, I'm curious."
Lira hopped off the table. "So we're just gonna waltz into their territory and say 'hi'?"
"Why not?" I said with a grin. "We can keep things low-key—at first. Observe, interact, maybe drop a few hints about who we are. If things get interesting, we'll play it by ear."
Eve materialized beside me, arms crossed, eyes twinkling with amusement.
"Going on vacation again, Master? And you didn't even finish your tea."
I waved a hand dismissively. "Tea can wait. This is more fun."
Eve sighed. "Of course it is."
Lira cracked her knuckles. "Alright, so how are we getting there?"
I gave her a lazy smile. "Think of a place... and poof—we're there."
With a flick of my wrist, a portal shimmered into existence—its surface rippling with golden light.
Sara hesitated only briefly before stepping forward. "If we're doing this, I'd like to approach him diplomatically at first."
I ruffled her hair. "Good idea. Don't want to scare the poor guy."
Lira snorted. "Too late for that. He's gonna crap himself when he sees Papa."
Sara shot her a look. "Lira."
"What? Just saying!"
I chuckled. "Alright then. Let's go meet the future Demon Lord of Tempest."
And with that, we stepped through the portal.
The sensation was brief—like stepping through water without getting wet—and then we were standing on a hillside bathed in golden afternoon light. Below us stretched a city: the city of Rimuru .
Creatures of all shapes and sizes moved through the streets—goblins, ogres, orcs, elves, and even a few dragons soaring above.
"Oh look at it," Lira breathed, her red eyes wide with wonder. "There are so many different races!"
Sara arms crossed as she observed the city like a scholar reviewing a living document.
"Yes, yes—I mentioned it in the report."
Lira waved a hand dismissively. "You did, but seeing it in person is way better than some image from satellites."
I chuckled under my breath. "You two are still as sloppy as ever."
They blinked, confused.
Then I pointed skyward.
A streak of pink energy cut across the horizon like a comet, trailing sonic booms in its wake. The air vibrated with raw power.
"Wait—is that Milim ?" Lira asked, shielding her eyes from the glare.
Sara followed her gaze, already calculating. "Seems like it. She hasn't visited in almost five hundred years. Must've forgotten about us."
I smirked. "More like remembered the wrong set of coordinates."
Before they could ask what I meant.
"Ah," I said, turning toward the tree line. "And here comes our host."
With a flick of my will, I nudged both girls behind a thick oak just as a second figure landed below the hill.
From our vantage point, we had a perfect view.
A blueslime stood there, his form shifting slightly as he scanned the area with sharp, intelligent eyes.
Rimuru Tempest.
"Talk about bad timing," I muttered. "Sheesh, Milim must've tracked him somehow. Either that, or she's been looking for a fight."
Lira peeked out from behind the tree. "So... do we stop her?"
"Not yet," I said, folding my arms. "Let's see how he handles himself first."
Sara frowned. "But Papa, if Milim gets too excited, half the city could be leveled before anyone realizes what hit them."
I gave her a knowing smile. "Exactly why we're watching."
Below, Rimuru tilted his head upward..
He didn't run.
Didn't panic.
Just stood there, calm as you please.
Then—
A blur of motion.
A shockwave.
And suddenly, Milim was there, hands on her hips, grinning down at him like a cat who'd found a very interesting mouse.
"MUHAHAHA! Hello there, little slime!" Milim declared, landing with all the flair of a villain in her own action movie, wings unfurling in a burst of radiant pink energy.
Rimuru stood still for a moment — not out of fear, but calculation.
Lira leaned in, whispering smugly, "Is this really how he reacts to a disaster like Milim? Pathetic. Even I can put up a fight against her."
I chuckled, folding my arms. "Yeah, I know. I didn't send you to train under Anos just for fun."
"Ohhh, look!" Sara pointed down the hill.
Down below, Shion, Benimaru, Souei, and Ranga had launched themselves at Milim, hoping to overwhelm her with sheer numbers.
They didn't stand a chance.
Milim didn't even flinch. A pulse of her aura sent them flying backward like leaves caught in a hurricane.
"Ooooh, that's one way to keep us entertained," Lira said, grinning like she was watching her favorite show.
Sara shot her a mild glare. "Shhhhh."
Below, Rimuru stepped forward, hands raised in a placating gesture.
"Milim," he said calmly, voice carrying across the clearing. "Let's make a deal. If you flinch from my next attack... you leave Tempest alone. If you don't... I'll serve under you."
There was a beat of silence.
Then—
"Woah," Lira whispered. "He's got guts."
Sara tilted her head. "Or he's awful confident in whatever he's about to do."
I smirked. "Haha, you'll see."
They both got ready — Milim cracking her knuckles, Rimuru adjusting his stance.
Then Rimuru rushed forward, faster than the eye could follow, summoning something into his hand.
He pressed it against her lips.
And then—
She licked the corner of her mouth.
"Huh..." Milim blinked, tilting her head. "Wow. What was that? It was seriously amazing!"
"SERIOUSLY, HONEY?!" Lira shouted from behind the tree, unable to contain herself any longer.
All attention snapped toward us.
We stepped out from behind the tree.
"Sorry for interrupting your fight," I said casually, hands in my pockets. "But I figured now was as good a time as any to say hi."
Milim froze mid-lick.
Her eyes widened. "...Wait. Progenitor?! Is that really you?"
I gave her a lazy wave. "Yeah, it's me. How've you been?"
She stared at me like I'd just materialized out of thin air — which, technically, I did.
"You're alive? You're here? You're real?! " she sputtered.
I arched an eyebrow. "You doubted me?"
She pointed dramatically at me. "Of course I doubted you were real! For all I knew, you were just some dream I had after eating expired carrot!"
I sighed dramatically, folding my arms behind my head. "Well, I'm here now, aren't I?"
"Wait... who is this ?" Rimuru asked, eyes narrowing slightly as he looked between Milim and me, clearly trying to piece together what kind of being stood before him.
"Oh no need to worry about us," I said casually, waving a hand. "We're just here to relax and have fun."
Milim crossed her arms, puffing out her chest like a proud peacock. "So Milim, I guess you can call this a draw then?"
She shot me a glare. "Ugh, no way! I clearly won!"
"Nope," Rimuru countered, arms folded with a smirk. "You flinched from that honey."
"Now now, kiddos," I interrupted, stepping between them like a referee breaking up a fight. "Let's be fair. I call it a draw. Nobody gets anything."
Milim pouted. "...Okay, fine. I can settle for that."
"I'm fine with that," Rimuru said, though his eyes never left me.
I turned toward the city, already walking away. "Now then, I believe there's some good food in your city. Lira and Sara haven't had lunch yet, so we're gonna grab something to eat."
Before I could take another step, a firm tug on my coat stopped me.
"Wait," Rimuru said, voice low but confident. "I still want to have a word with you."
I glanced down at his hand on my sleeve—then slowly raised an eyebrow.
"...Sure," I said, tone light but unmistakably amused. "Over dinner is fine, right?"
He hesitated for half a second—just long enough to realize he'd probably overstepped—but held his ground.
"Right," he muttered, releasing my coat.
I gave him a small smile. "Good call."
At the Restaurant – A New Kind of Meeting
The restaurant was modest—nothing too flashy, which surprised me given how fast Tempest was growing. But it smelled amazing, and judging by the way Lira's stomach growled, she approved.
Sara already scanning the menu like it was a military strategy document.
Milim hovered above the table, legs swinging under her like a kid in trouble. "So... are we really not talking about the fact that the Progenitor is back? "
"You say it like I ever left," I replied, sipping from a glass of tea.
Rimuru sat across from me, hands folded, expression serious.
"Who are you, really?" he asked. "And why are you here now?"
I leaned back, letting the question hang for a moment.
Then I smiled.
"Call me Nox Eden. Ruler of Eden, father to Lira, and mentor to many—including a few people you might know."
He blinked. "Eden? That legendary hidden nation? You mean it's real?"
"Very real," Sara said quietly. "It's advanced beyond anything in this world. We're both part of its government."
Lira grinned. "Also, Papa doesn't usually visit unless something big is about to happen."
Rimuru's gaze sharpened. "And what's going to happen now?"
I chuckled, spearing a shrimp with my chopsticks and taking a slow bite before answering.
"I decided to make it official."
He blinked, tilting his head slightly. "Make what official?"
I gestured vaguely around us with my chopsticks. "Eden. I'm here to establish formal diplomatic relations with your nation."
There was a beat of silence.
Then Rimuru smiled—small, calculating, but genuine. He extended his hand across the table.
"Sure. I'd be honored to form diplomatic ties with Eden."
I looked at his hand for a moment—then took it.
A pulse passed between us, not violent, but unmistakable: two rulers acknowledging each other for the first time.
"Alright," I said, setting down my chopsticks. "But official talks will start in a couple of months. For now... enjoy the peace."
He gave me a curious look. "You're not going to push for immediate negotiations?"
I leaned back in my chair, folding my arms behind my head. "Nah. You've got enough on your plate right now. And besides..." I smirked. "I like seeing how you handle things without interference."
Lira grinned beside me. "Translation: he wants to see if you can run a country without screwing it up."
Sara elbowed her lightly. "What she means is... we believe in giving leaders room to grow before holding them accountable."
Rimuru laughed softly. "I see. Well then, I won't disappoint."
Milim, who had been uncharacteristically quiet, suddenly leaned forward. "So wait—is this like an alliance? Are we gonna have embassies or something?"
I arched an eyebrow. "That's up to him. I just opened the door."
Rimuru tapped his chin thoughtfully. "An embassy could work. We'll need to set up trade routes eventually, too."
Benimaru, who had been listening quietly from behind him, stepped forward respectfully. "Your Majesty, may I suggest we begin with cultural exchanges and economic agreements before full political integration?"
I gave him a small nod. "Good call. That's the smart way to do it."
Rimuru glanced at Benimaru with approval. "Agreed. Let's take it step by step."
I stood, brushing imaginary dust off my coat. "Sounds good. We'll send our envoys in about three months. Until then—" I looked out over the city through the restaurant window. "Enjoy your peace while it lasts."
Lira groaned. "Ugh, Papa, don't scare him off already!"
Sara smiling faintly. "He seems fine."
Rimuru gave me a long look—measuring, weighing, considering.
Then he returned the smile.
"I think I'm starting to get it now," he said. "You're not just some random powerful figure. You're testing me."
I winked. "Maybe. Or maybe I'm just hungry."
He chuckled. "Either way—I'm glad we met."
As we stepped outside, the sun was beginning to dip below the horizon, casting golden light over the bustling streets of Tempest.
Eve her voice soft in my mind.
<
I smirked.
'Yeah. Why not? It's been a while since I played the game.'
<
'Peaceful doesn't mean boring, Eve.'
She sighed. <
Back inside, Milim was already plotting something loud and destructive.
And Rimuru?
He watched us go with sharp eyes and a thoughtful expression.
The kind that meant he wasn't done asking questions.
Which was good.