The land shifted as they moved northeast. Emberleaf’s warm trails and sunlit hills gave way to veins of stone, slagfields, and old channels where molten rock once ran. The soil thinned to black, the air shimmered with heat vents that hissed like the mountain itself was breathing.
Kael stepped lightly over a deep fissure in the trail, a faint red glow pulsing far beneath. He didn’t flinch—just shifted his footing and kept walking.
Behind him, Nanari walked with her usual quiet vigilance, glaive strapped across her back, eyes scanning the jagged horizon. Rimuru floated ahead in wide, lazy loops, dressed for “diplomacy”—a tiny satchel slung across her slime-body, a monocle perched for style, and an oversized pen tucked behind what she insisted was an ear.
Heat shimmered around her as she sparkled faintly. “Are you sure we’re not melting?” Rimuru muttered. “Because if I squint hard enough, I swear the rocks are sweating.”
“They’re not,” Nanari said flatly.
Kael smiled faintly. “We’re close.”
The cliffs narrowed into a wide canyon, walls sheer and black with glowing runes cut into their seams. Above, cranes and gear-lifts churned, some powered by mana cores, others by ancient waterwheels drawing from hidden veins. It was dwarven craft—old ingenuity bent to new survival. Functional. Worn. Alive.
Kael tapped the satchel at his hip. Inside, wrapped in foam-mana cloth, rested Emberleaf’s first working Runegun—a fire-synced weapon built to channel stable mana bursts through a rune array. Not a threat. Not a gift. Proof that Emberleaf could build.
“Dwarves trust tools,” Kael said quietly. “We didn’t come to flatter them. We came to give them something they can hold.”
“And if that doesn’t work?” Rimuru asked.
“Then I let you eat the contracts.”
Her glow brightened. “Really?”
“Not the first one.”
They crossed the final ridge—and there it was:
Runebrick.
A fortress carved into the mountain itself. Its outer wall sloped like a dam, hex-stone reinforced with glowing furnace seals. Tower balconies jutted like ribs from the cliffside, belching black smoke and orange heat. The gate was no drawbridge, but a rotating hex-lock, each ring grinding open with a hiss of steam.
A checkpoint waited.
Four dwarves stood in stone-and-iron uniforms, fire picks at their sides and rune-scribed vambraces glowing faintly. Their leader was taller, broad-shouldered, ember-gold eyes set beneath a braid laced with an iron spike. She looked Kael over like someone with no patience for pomp.
“Envoy from Emberleaf?” she asked.
Kael stepped forward. “Kael Drayke. We’ve come to open trade—if your forge still remembers trust.”
Her eyes flicked to the satchel at his side. “What’s in the bag?”
Kael opened the satchel and set the Runegun gently on the blackstone table between them. Bronze-plated, rune-etched, its barrel heat-vented and grip hand-carved—it gleamed in the forge-light.
“Something we built,” Kael said. “It’s not a threat or a gift. It’s Proof.”
The dwarf leaned in, studying it. “Looks like a torch with ambition.”
Rimuru bobbed beside it. “It hums if you pet it right.”
Kael stayed calm. “Test it. You’ll see what we’re offering.”
The leader held his gaze a moment longer, then turned sharply toward the forgeway. “Let’s see if your toy sings in stone. Welcome to Runebrick.”
A case of literary theft: this tale is not rightfully on Amazon; if you see it, report the violation.
The forge-floor of Runebrick wasn’t built for ceremony. No banners or marble—just heat, motion, and the roar of molten steel.
Kael stood on an overlook, watching the stronghold’s heart churn below. Dozens of forges lined a circular hall carved straight from the mountain, steam hissing through vents, hammerfall ringing like thunder. Runes glowed in precise webs across the floor, feeding mana from deep core veins into every station.
At least half the smiths were already watching—some openly, others through narrowed eyes and tightened grips on their tools.
Their guide, Magrun Bronzeweld—Runebrick’s trade minister and master smith—strode ahead, boots striking iron walkways. Her voice carried without turning: “Before you sit at our table, you show us what you’ve built. That’s the way of Runebrick. Words fade. Steel remembers.”
Kael inclined his head. “That’s fair.”
They descended to the forge floor, where a wide testing dais waited—curved blast wall behind it, three mana-pillars ahead. It wasn’t ceremonial. It was industrial, meant to judge weapons at full strength.
Rimuru brightened. “Ooooh, a trial arena. You think they’ll let me fire it?”
“Let me survive first,” Kael muttered.
Magrun crossed her arms, one brow arched. “So? This Emberleaf invention you carried like it might bite—show us.”
Kael stepped onto the dais and set the Runegun on the stand. The forge-light caught its bronze casing, Emberleaf’s flame crest shimmering faintly along the barrel.
He thumbed the safety glyph, the hum of mana rising in response. “Compressed flame cores, stabilized by a triple-inscribed weave,” he explained. “Not thrown—fired. Controlled bursts. Minimal overspill.”
From the sidelines, a dwarf muttered, “Sounds like a flamethrower with manners.”
Kael grinned. “Try it.”
Magrun stepped forward, lifting the Runegun with practiced care. She aimed at the first mana pillar and tapped the focus rune.
Boom.
A tight burst of flame spiraled out, striking dead center and burning a molten ring into the stone. The forge fell silent.
She fired again, this time at the second pillar. The burst punched through clean, precision without waste. A third shot angled downward into a hardened plate, shaking it but leaving it intact.
Magrun lowered the weapon slowly. “Well. You turned a dragon’s whisper into a hammerstroke.” Her eyes flicked to Kael, sharper now. “What do you want in return?”
Kael stepped forward, steady. “We need building materials—high-tolerance metals, construction crews, quarry shares. In return, Emberleaf offers three things: mana tech, trade exclusivity for the Runegun… and honesty.”
Magrun snorted. “Honesty doesn’t fuel a forge.”
“I’m not here to light fires,” Kael replied. “I’m here to rebuild from them.”
Magrun studied him a long moment, then handed the Runegun to Rimuru.
Rimuru saluted with her whole body. “Diplomatic slime reporting for duty!”
Kael winced. Magrun only smirked. “Good weapon,” she said. “Now let’s see if your contracts are as sharp.”
Magrun’s office overlooked the molten stream that powered Runebrick’s furnaces. Blackstone walls laced with fireglass veins hummed with redirected heat. No throne, no banners—just a stone bench, a slab table piled with ledgers, blueprints, and a single sealed contract scroll the size of Rimuru.
“You forged something worth respect,” Magrun said, pouring tea into heat-proof mugs. “But Runebrick doesn’t shake hands—we hammer terms.”
Kael inclined his head. “That’s what we came for.”
She unrolled a parchment glittering with binding glyphs, its text shifting to match the room’s mana and the names present.
Rimuru’s eyes lit up. “Reactive paper! Wait—are those edible fibers?”
Magrun smirked. “Grain-pulp, bitterroot ink. Easy to burn if someone cheats.”
Rimuru poked the corner with a pseudopod. “Tastes like overregulation.”
Kael suppressed a smile and read the terms.
The contract was clear: Emberleaf would provide three Runegun prototypes, rotating envoy visits, and schematics for non-combat mana tools.
Runebrick would grant access to two mineral quarries, thirty builders on rotation, and rights to install a monitored mana-forge capsule beneath Emberleaf.
Magrun rolled up the spare copy and, with a grin, handed it straight to Rimuru. “Go on. You earned a bite.
Rimuru stared at the scroll like it might explode. Slowly, she nibbled the edge, chewed, and declared, “Tastes like diplomacy. And chalk.”
Magrun barked a laugh. “Better than blood and lies.”
By the time Kael’s party stepped back through the outer ring gate, the sky was glowing amber. The clang of hammers faded behind them, steam no longer hissed underfoot. What lingered now was the smell of stone, ink, and something rarer:
Trust.
Rimuru bounced at Kael’s side, proudly holding a shiny casing in her gooey grip—a dwarven core-shell designed to stabilize unstable magic.
“A gift,” Magrun had said. “For when your blob decides to torch another roof.”
Rimuru was already planning glitter runes for it.
Nyaro padded behind them, silent and steady, his blue eyes scanning the ridgelines without tension.
Kael said nothing for a long while, not until Emberleaf’s distant spires were barely visible against the horizon.
“That’s one,” Kael said at last.
Rimuru tilted her head. “One what?”
He paused. “One stone. One builder. One new name written down without a sword.”
Rimuru tilted her head. “You sound tired. But your heart feels… tall. Like you’re standing on something.”
“I am,” Kael said softly. “The first brick.”
As they crested the last ridge before home, Rimuru pulled a scroll from her satchel. She unrolled it proudly—a doodle labeled in bubbly ink:
Boomforge v1.0 – Powered by Hope, Goblin Grit, and Kael’s Sleepless Nights.
Kael looked at it. Smiled. And walked forward into the dusk.