Guided Falling

Arista wandered through Tabula Rosa without any particular destination in mind, letting the open, unstructured quest sit quietly in the back of her thoughts while she simply existed in the city she'd helped build.

She passed the swing ride without meaning to, the same steam-driven ride she'd built after the hydra fight, and stopped for a moment, watching a fresh crowd of children shriek with delight as the chains swung them wide through the open air.

She smiled, the same quiet, warm satisfaction settling in that she always felt watching it, and kept walking.

She caught Nettle's voice a few streets further on, deep in conversation with Bram outside her workshop.

"...Three full days," Nettle was saying, still visibly recovering from the memory of it. "Climbing that mountain to reach the Celestials was genuinely brutal. I don't think I've been that exhausted since the storm crossing."

"You could've just asked Thoth for a ride," Bram pointed out.

"I could have. I didn't think of it until I was already halfway up." Nettle sighed dramatically. "Lesson learned."

Arista smiled at the exchange, filing it away without much thought, and continued on, eventually finding herself standing near the city's outer edge, the cavern wall rising up into darkness somewhere far overhead.

Arista looked around at the familiar, ember-lit stretch of cavern surrounding Tabula Rosa itself, the Demon Realm's own particular warmth settling against her skin the way it always did down here. She closed her eyes, picturing the other two realms instead, the Celestial Realm somewhere far above the surface entirely, still mostly isolated from the rest of the world even with the tunnel now, and the Dwarven Republic's mountain peak, distant and equally unseen from her current position, reaching up toward that same barrier from the opposite direction.

Three realms. Stacked, vertically, across an enormous span of altitude, sky, surface, and depth, all connected, in theory, by nothing more than distance and the memory of a pickaxe that had once cut through all of it.

A slow, playful grin spread across her face.

"...What if," she murmured, mostly to herself, "we built a roller coaster."

She kept staring upward, the idea assembling itself with startling speed now that it had actually arrived. "Starting at the Celestials. Full corkscrews, loops, the whole thing, dropping down toward the Dwarven Empire, gravity doing basically all the work the entire way. Then continuing down, through the surface, into the Demon Realm itself, and eventually looping back around to the start."

She pulled out her notebook, sketching furiously now, the whole absurd, magnificent concept taking shape.

"...Gravity handles the initial drop beautifully. Momentum carries it through most of the middle stretch, assuming the track's angled properly. But eventually, momentum runs out, you can't coast forever, not across that kind of vertical span, not without some way to recover the height you'd need for the return loop."

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She tapped her notebook, already sketching the solution alongside the problem.

"...Cable system. same principle as the ski lift tunnel, once gravity's done everything it can, a cable-driven mechanism picks up exactly where momentum fails, hauling the cart back up to whatever height it needs before gravity takes over again for the next drop."

She stood there a long while, eyes still closed, watching the whole, impossible, three-realm structure assemble itself in her mind: loops, corkscrews, a continuous, thrilling descent and ascent spanning the entire vertical breadth of the world she'd spent all this time quietly reshaping.

"...This might actually be it," she said quietly, to nobody in particular, feeling the old, familiar restless spark ignite fully now. "This might actually be how I answer 'impress us.'"

Arista laid the full concept out for the assembled crew the next morning, sketches sprawling across her workbench, the Celestial starting point, the long, corkscrewing descent, the Demon Realm's depths, the return cable system, all of it converging into one continuous, three-realm loop.

Bram studied the initial drop section carefully, tracing the angle with a finger. "...How steep are you actually planning this first descent?"

"Eighty-nine degrees," Arista said, entirely matter-of-fact.

Bram looked up slowly. "...That's basically free fall."

"It's not free fall."

"It is one degree away from a completely vertical drop, Strawberry. At eighty-nine degrees, the only thing keeping this from being literal free fall is a single, symbolic degree of angle that changes nothing meaningful about the actual physics involved."

"It's guided falling," Arista corrected, entirely serious. "There's a track. There's a cart. There's a rail keeping everything on a controlled, predetermined path instead of just plummeting randomly through open air."

"The track is along the direction you're already falling," Bram said. "That's not guidance. That's a very expensive, very precisely shaped hole for gravity to pull you through."

"It has structure," Arista insisted, gesturing at the sketch. "Rails, a cart, safety restraints. That's meaningfully different from just jumping off the Celestial Realm and hoping for the best."

"Is it, though."

"...Mostly," Arista admitted, after a pause just long enough to be genuinely concerning.

Claire, reviewing the sketch with her usual careful, professional eye, cleared her throat. "For what it's worth, from a purely structural standpoint, eighty-nine degrees is achievable. The track can absolutely be built to that angle. The actual concern is rider tolerance, not engineering feasibility."

"See," Arista said, pointing triumphantly at Claire. "Achievable."

"I said achievable," Claire clarified, "not advisable. There's a difference between 'the track can physically exist at this angle' and 'a human-shaped rider should experience it.'"

Bram crossed his arms. "This is exactly the kind of sentence that precedes someone ending up at seven percent HP."

"Nobody's ending up at seven percent HP," Arista said, though her grin suggested she wasn't entirely opposed to the possibility on principle. "We'll test it properly first. Small scale, controlled conditions, same discipline as literally everything else I've ever built. If eighty-nine degrees turns out to be genuinely unsurvivable for a normal rider, I'll adjust."

"...To what, exactly? Eighty-eight?"

"Maybe eighty-five," Arista said, entirely too pleased with herself. "I'm willing to compromise slightly."

Bram stared at her for a long moment, then let out the exact same long-suffering sigh he'd given a hundred times before across two years of exactly this kind of conversation.

"...I would like it formally noted," he said, "that I raised the concern, and was overruled by 'guided falling' as an actual engineering justification."

"Noted," Arista said cheerfully, already sketching the corkscrew section that followed the initial drop. "Now, let's talk about the loops."