Rimuru Tempest phased through the labyrinth's tenth-floor barrier like a bored office worker sliding into a meeting room ten minutes late. The moment the heavy doors swung open on their own (Veldora's dramatic flair, no doubt), the slime ruler was hit by a wall of sensory overload that made his [Great Sage]—no, Ciel—subtly glitch in protest.
The chamber had evolved again. What was once a neat otaku fortress now looked like a game studio after an all-nighter crossed with a dragon's hoard. Holographic screens floated in overlapping layers, each playing different isekai episodes on mute. Empty ramen cups formed a miniature Great Wall around the throne. A half-built Gundam model the size of a goblin stood guard beside a glowing orb pulsing with raw, golden energy that screamed "do not touch unless you want to accidentally invent nuclear fusion."
Veldora lounged in full humanoid form, one leg crossed over the other, wearing a custom black haori embroidered with pixel-art storm clouds and the words "True Dragon Level: MAX." He didn't even look up from the floating tablet in his lap.
"Little brother! You are precisely seven minutes and forty-three seconds late. Faust calculated it. Takumi insists I dock you one limited-edition collab figure as penalty."
Rimuru floated forward, tiny arms akimbo, already sensing the ridiculous power spike humming in the air like a server farm on overdrive. "Veldora, I felt your energy flare from the surface. It was like the Dungeon grew a second sun. What the—wait, who's Takumi?"
A cheerful, unmistakably Japanese male voice echoed directly inside Rimuru's head, casual as a Discord ping.
"Sup, Slime Bro. Kanzaki Takumi, former overworked programmer and professional otaku. Died, reincarnated as Manas inside your big bro's Faust skill, accidentally made it evolve into something beautiful. Nice to meet the guy whose memories I've been binge-reading like premium isekai light novels."
Rimuru froze mid-float. "...Excuse me?"
Veldora finally looked up, golden eyes twinkling with the perfect mix of ancient wisdom and gremlin energy. He tapped his temple twice. "Allow me to explain in the most scholarly fashion possible. While I was deep in contemplative research—analyzing the probability that your festival speech would cause international incidents—my Ultimate Skill [Faust, Lord of Investigation] encountered a wandering soul with exceptional otaku density. Takumi here was pulled in like data into a black hole. Result? Faust has transcended. New sub-skills unlocked. Infinite creative and destructive energy generator, now fully online and ready for sharing with you and every subordinate in Tempest. Also, Otaku Art Creation Techniques. I can now manifest entire anime seasons on demand. Quite useful for morale."
He grinned, fangs flashing. "Takumi died in a manner most heroic for our kind. Seventy-two hours coding an isekai VRMMO, zero sleep, energy drinks as his only companions. At the exact moment the anime protagonist unleashed his final form, Takumi stood up, screamed 'THAT'S THE GOOD STUFF!' and suffered a noble karoshi. Heart attack mid-hype. His last coherent thought was a wish to create infinite worlds instead of debugging them. Fate, in its infinite comedy, delivered him straight to me. I call it destiny with excellent taste."
Takumi's voice chuckled warmly. "Yeah, pretty much. One second I'm yelling at my monitor, next second I'm a skill spirit riding shotgun in a dragon's brain. Best plot twist ever. No regrets—except maybe not stocking more wasabi peas."
Rimuru pinched the bridge of his non-existent nose, but a smile was already tugging at his slime form. This was peak Veldora: wise enough to quote probability matrices like a philosopher, yet still enough of a shut-in otaku to treat a reincarnated soul like a new co-op partner in an MMO. The brotherly dynamic felt warmer than ever—less "sealed calamity" and more "that one chaotic older sibling who somehow became a genius inventor."
"Alright, show me the goods before Shion barges in demanding to 'protect' me from whatever explosion she assumes is happening," Rimuru said, landing on a nearby cushion that suspiciously looked like a giant plushie of himself.
Veldora's eyes lit up like a kid who just got admin rights. "Observe." He raised one hand. Golden energy coalesced into a perfect sphere—no waste, no strain. It hummed with pure creation laced with controlled destruction, the kind of power that could birth stars or erase mountains depending on the user's mood.
"Infinite Pure Destruction & Creation Energy Generator," Takumi narrated proudly. "I designed the output to be shareable. Think of it as an unlimited mana battery for the whole nation. No more resource bottlenecks for your MagiTrain project. I also threw in Creative Technology, Science, and Magic Knowledge Repository. Plus Skill Creation, Duplication, Gifting, and Storage. We can literally hand out custom skills like participation trophies."
Veldora flicked the orb toward Rimuru. The energy threaded into the slime's core like a warm handshake. Rimuru's senses exploded with clarity—new pathways opened, old limits dissolved. He felt like he could run the entire country's power grid on a whim.
"Whoa… this is ridiculous. I could power a city with pocket change now."
"Precisely," Veldora said sagely, then immediately ruined the moment by striking a dramatic pose. "As the elder brother, it is my duty to supply my cute little sibling and his ragtag band of misfits with infinite resources. Takumi calls it 'support character OP build.' I prefer 'enlightened patronage with extra flair.'"
A knock rattled the door. Before anyone could answer, Shion burst in carrying a tray of suspiciously perfect onigiri. "Lord Rimuru! I sensed danger and brought emergency provisions! Also Benimaru insisted on coming because he said something about 'unstable dragon energy'—"
Benimaru stepped in behind her, arms crossed, looking equal parts exasperated and amused. "What my colleague means is that the entire tenth floor just registered a mana spike big enough to make the dryads nervous. Care to explain why the air tastes like someone mixed lightning with… instant ramen?"
Veldora's grin widened to dangerous levels. "Ah, perfect timing for a live demonstration!" He snapped his fingers. Using the new Skill Creation and Gifting functions, he wove a thread of energy, duplicated a basic [Magic Sense Enhancement] skill from his own repertoire, and gifted it straight into a spare onigiri on Shion's tray.
The onigiri glowed, then politely floated up and bowed. "Thank you for the enhancement, Lord Veldora. I am now a self-aware rice ball with improved perception. Would anyone like me to scout for wasabi?"
Shion's eyes sparkled with dangerous delight. "A talking snack?! Lord Veldora, you are a genius! I shall name him Oni-giri the First and train him in the way of the blade!"
Benimaru facepalmed so hard the sound echoed. "This is exactly why we have safety protocols…"
Rimuru couldn't help laughing, the sound bubbling up uncontrollably. "Veldora, you turned food into a subordinate. That's next-level trolling."
Takumi snickered in their heads. "Hey, creative application! I approve. Want to go bigger? I've got an idea for your MagiTrain. Using Otaku Art Creation Techniques plus the energy generator, we can prototype a hybrid magic-tech engine that looks like a transforming mecha dragon. Infinite power, zero emissions, and it can do the cool anime transformation sequence when it hits max speed. Call it 'Tempest Rail-X.' Kids will love it. Adults will buy the model kits."
Veldora nodded sagely, though his tail was literally wagging behind the throne. "A most excellent proposal, partner. Wisdom dictates we balance progress with entertainment. The people of Tempest have suffered enough grim battles. Let us give them wonder… and limited-edition merchandise."
Rimuru felt the brotherly bond click into place deeper than ever. Veldora wasn't just a sealed calamity anymore—he was a wise, ridiculously powerful, chronically online dragon who now had an internal co-pilot equally obsessed with creation. The shut-in tendencies were still there (the chamber screamed "do not disturb, I am farming gacha"), but they were evolving into something productive. Something fun.
"Fine," Rimuru said, already drafting mental blueprints with Ciel's help. "Let's test it. Small scale first. Create a single carriage prototype right here. Then we'll share the energy grid with the construction teams upstairs. But no mecha transformation until I approve the safety testing. I do not need another festival incident where a train does a backflip into the sky."
Veldora and Takumi answered in perfect sync—one booming voice, one mental cheer: "As you wish, little brother!" / "Hell yeah, Slime Bro!"
Energy surged. Holographic schematics bloomed across the room. Shion was already cooing over her newly sentient onigiri, promising it "special training." Benimaru muttered something about writing a strongly worded report titled "Why Dragons Should Not Be Left Unsupervised With Modern Media."
In the middle of the creative storm, Rimuru caught Veldora's eye. The dragon's expression softened for just a moment—wise, ancient, and genuinely fond.
"You have built something beautiful here, Rimuru. A nation of monsters living in peace. Now, with Takumi and myself as your infinite support line… let us make it legendary. One otaku-approved upgrade at a time."
Rimuru smiled, small and sincere. "Yeah. Together. Just… maybe tone down the talking food until after lunch?"
Takumi's laugh rang out. "No promises. This world's about to get the ultimate fan-service update."
Outside the chamber, the winds of Tempest carried a faint new hum—pure, creative energy quietly threading into the nation's veins. The MagiTrain project had just received divine (or rather, draconic-otaku) backing. And somewhere far above, unaware merchants and council members were about to discover that paperwork was about to become a lot more… interesting.