All Three Realms

Arista went quiet for a long moment, staring up at the distant summit, a slow, delighted smile spreading across her face.

Bram, catching the specific expression, immediately grew wary. "...What are you thinking about?"

"In the real world," Arista said, still smiling, "the tallest roller coaster ever built has a first drop of about a hundred and forty meters."

"...Okay."

"Ours easily matches that. And that's only the guided falling part, the actual open-air drop before the corkscrew even catches it." Arista grinned, already doing the rest of the math in her head. "If we look at the entire elevation span instead, base to Celestial anchor, ours is roughly twenty-nine times larger."

Bram did the math slowly, visibly, watching his own expression shift toward genuine alarm. "...That's not a normal comparison."

"That's twenty-nine times taller than the tallest roller coaster that has ever existed anywhere else," Arista said, delighted, savoring the number properly. "We didn't just build a big roller coaster. We built something roughly thirty times larger than the current world record, and the current world record isn't even close to being in the same category anymore."

Claire, reviewing the full elevation profile alongside her, tilted her head. "...That twenty-nine times is only the mountain, though. Surface to Celestial anchor. It doesn't include the Demon Realm side at all."

Arista paused. "...Right. Just the visible half."

"If we're measuring the entire structure," Claire continued, "base to peak and then straight back down into the Demon Realm on the other end, the actual total elevation span roughly doubles. Closer to fifty-seven times the record, not twenty-nine."

Bram stared at both of them, processing the sheer, absurd scale of what he'd apparently helped build over the past eleven weeks.

"...Not helping," he said, flatly.

"I'm not trying to help," Claire said, entirely unbothered. "I'm trying to be accurate."

"I'm trying to appreciate the scale of what we just did," Arista added, entirely too pleased with herself.

"You built something fifty-seven times larger than the biggest roller coaster humanity has ever managed to construct, and you're currently standing here smiling about it."

"Yes."

"That should concern you at least a little."

"It concerns me a normal amount," Arista said, grinning. "Which is to say, not very much, because we tested every single section individually before ever connecting them, and the whole thing's held up perfectly every time."

Bram rubbed his temples, staring back up at the mountain, at the tiny, distant silhouette of the first cart still sitting patiently at the summit.

"...I would like it on record," he said finally, "that I am about to voluntarily strap myself into something fifty-seven times larger than any roller coaster that has ever existed, and that this is, somehow, still not the most alarming thing you've ever built."

"It's genuinely not," Arista agreed, cheerfully. "The railgun was worse."

"That's not comforting."

"It wasn't meant to be comforting," Arista said, already turning back toward the workshop, grinning at the sheer scale of her own achievement. "It was meant to be accurate."

Getting the whole system fully operational took another two weeks beyond the structure itself, the steam engine properly integrated and tested against the cable system, enough carts finally hauled up the climb to run proper operations, every pillar connection double-checked, every guide rail polished clean, the whole sprawling, three-realm structure finally ready to actually carry a passenger from the Celestial anchor point all the way down through the Demon Realm and back.

Arista stood at the Celestial starting platform on the appointed day, the small, embroidered flag Nettle had made now flying properly from a mount beside the boarding area, the fly, the mining helm, the six feathered wings, all three realms represented equally, exactly as she'd hoped.

She glanced over at the original tunnel, considerably widened now to accommodate the crowds the coaster would eventually draw, and beside it, the separate opening they'd cut specifically for the track itself, a solid four and a half meters across, plenty of clearance for the rails and cart to actually pass through, though calling it a tunnel felt generous at this point. It was really just a hole, straight down, considerably less elegant than her original crossing but entirely necessary for the drop to actually exist.

The crew had all gathered, one way or another. Bram stood nearby, cloud-material shield strapped to his back out of pure habit even though nobody expected disaster today. Claire ran one final systems check, methodical and calm despite the enormity of the moment. Colm stood with his sketchbook already open, ready to properly document whatever happened next. Petrov checked the schedule one last time, satisfied that thirteen weeks of careful, sustainable pace had brought them exactly here, on time, without a single burnt-out crew member along the way. Nettle stood proudly beside her flag, already planning the merchandise line this moment would inevitably inspire. Gorthruk had made the trip up specifically to witness his own Republic's craftsmanship put to its first real test, the journey itself considerably shorter than it once would have been, courtesy of the very lift his own people had built.

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"...You doing alright up here?" Nettle asked Petrov, catching the slightly rigid set of his shoulders.

"Please don't remind me," Petrov said, entirely serious. "I had Claire blindfold me the entire ride on the dwarven ski lift. But I've found, as long as I don't actually look down and see the ground, I'm perfectly fine."

Nettle glanced pointedly at the platform's edge, where the cloud barrier's own thick, solid white layer stretched away beneath them, obscuring the actual ground far below completely, letting nothing but sunlight through. "...You're aware there's nothing solid beneath that for kilometers, right? Just the barrier itself, and then a very, very long drop underneath it."

"I am choosing," Petrov said, staring resolutely at a fixed point on the horizon, "not to think about that."

Thoth, who'd barely fit through the widened entrance tunnel this time, circled once overhead, wings catching the thin, high-altitude light, before settling nearby to watch properly.

Michael arrived first, six wings folding with quiet, deliberate grace as he approached the platform, studying the gleaming cart waiting at the boarding point with genuine, unguarded curiosity.

Beelzebub arrived moments later, human-passing form settling in beside him, the woven mithril band still resting against his collar, glowing faintly with its own quiet warmth.

"...Strawberry," Beelzebub said, studying the full scope of the structure properly for the first time, the drop stretching away below them, the corkscrew wrapping the distant mountainside, the tiny, barely visible loop far below that. "This is considerably larger than I pictured from the blueprints alone."

"It usually is," Arista admitted, grinning. "Things tend to look different once they're actually built."

Michael studied the flag flying beside the platform, the small, careful embroidery catching the light. "...All three of us, represented together," he observed, quiet approval settling into his layered voice. "A fitting emblem for what this structure actually represents."

"That was the idea," Arista said. "Not one realm above the others. Just... all three, connected, equally present."

"You're going like that?" Beelzebub asked Michael, glancing pointedly at the full spread of his six wings. "Those won't fit."

"Of course not," Michael said, already beginning the process. "Retracting them is somewhat uncomfortable, however, so I generally wait until the last possible moment."

The two larger flight wings folded inward, smaller and smaller, until they vanished entirely, leaving only the smaller, eye-lined wings still wrapped close around his head and the lower, feathered wings still draped modestly around his legs.

The two rulers settled into the waiting cart together, harnesses fastened carefully by Claire's own hands, checked twice for proper fit.

"Ready, then," Beelzebub said, glancing sideways at Michael with something almost mischievous in his expression. "Try to keep your composure, old friend. I intend to enjoy this thoroughly."

"I make no promises regarding composure," Michael said, entirely serious, "given the reported angle of the initial descent."

Arista signaled the release. The starting gate's manual latch disengaged with a clean, mechanical click, and the cart, perched at the very edge of the eighty-nine-degree drop, hung suspended for one final, breathless moment before gravity finally, completely took hold.

It fell.

The drop swallowed the cart entirely, the roar of displaced air the only sound for several long, suspended seconds, before the corkscrew caught it, spinning it in a controlled, dizzying spiral against the mountainside's proven adamantium spine. The loop followed, inversion complete, momentum still carrying strong. The tunnel swallowed it whole, dark and brief, before spitting it back out into the Demon Realm's open depths, the second corkscrew catching it cleanly.

The drop, the corkscrews, the loop, the tunnel, the whole breathless sequence took just under four minutes.

Then, at the base of the climb, the catch hook engaged with a solid, mechanical click, and the cable took over, hauling the cart steadily, patiently back toward the Celestial anchor. This part of the journey took considerably longer, nearly fifteen minutes of steady, unhurried ascent, gravity and momentum finally spent, nothing left to carry the cart but the same reliable mechanism that had proven itself on that very first, cautious test.

The cart rolled to a gentle, controlled stop exactly where it had begun, and for a long moment, neither passenger moved at all.

Then Beelzebub let out a long, delighted laugh, entirely unrestrained, all traces of his usual careful dignity abandoned completely.

"...Again," he said, breathless. "I would like to do that again, immediately."

Michael sat very still a moment longer, the smaller wings around his head visibly, comically ruffled from the sheer force of the drop, countless small eyes blinking in what might have been genuine, overwhelmed wonder.

"...I have existed since before this world's own memory began," he said finally, quiet, something unmistakably moved in his layered voice. "I did not expect, at this stage of my existence, to discover something entirely new."

Arista crossed to the cart, helping unfasten their harnesses, practically vibrating with the same restless joy she felt every single time something she'd built finally, properly worked.

"...Well?" she asked. "Did I impress you?"

Beelzebub, still grinning, glanced at Michael, and then back at her.

"Thoroughly," he said. "Unreservedly. I don't believe either of us anticipated feeling quite this alive."

Michael inclined his head slowly, his remaining wings settling into something that, on him, might have been the closest thing to genuine delight his ancient, careful nature allowed.

"You have built something that connects three realms not through necessity," he said, "but through shared joy. I did not know that was a thing worth building, until this moment."

Arista stood there, surrounded by her whole crew, watching the Lord of the Seven Hells and the eldest Seraphim of the Celestial Realm both grinning like children fresh off their very first ride, and felt something enormous and warm settle fully into her chest.

Bram, standing nearby, caught her eye, grinning.

"...I think that's a yes," he said. "I think you actually impressed them."

Arista looked out at the full, sprawling structure, Heaven, the mountain, Hell, and back again, three realms finally, genuinely connected by nothing more than steel, adamantium, careful engineering, and the simple, stubborn belief that something didn't need a practical purpose to be worth building.

"...Yeah," she said, quiet, satisfied, watching Beelzebub already climbing back into the cart for a second ride. "I think it is."