Strawberry's Descent

Petrov had a list by day two. An actual list, not Arista's usual variety, which tended to begin with GENIUS IDEA, probably feasible, possibly dangerous, but a proper, professional one, neatly organized under a single clear header.

PROJECT RISKS

Material shortages.

Crew coordination.

Ventilation.

Safety.

Lighting.

Arista read down to item five and stopped, genuinely puzzled by its inclusion among the others.

"...Lighting?"

Petrov looked at her, entirely matter-of-fact, the specific patience of a man who'd clearly anticipated this exact reaction. "Yes."

"Why?"

"Strawberry," he said, "half your workforce is demons."

"Correct."

"The other half isn't." He let the implication sit there a moment before finishing it for her anyway. "The dwarves can't see anything down there, not once you're passed the staging areas near the city proper. Ashfall Reaches itself has centuries of ambient lava-glow and existing infrastructure lighting the place well enough for anyone to get by. A freshly cut tunnel face, two hundred meters into raw unlit rock, has none of that."

Arista turned slowly toward the nearest demon tunnel worker, who happened to be standing close enough to overhear the exchange. He gave her an easy, genuinely puzzled shrug, apparently just as surprised by the question as she was.

"I assumed everyone could see in the dark," the demon said, entirely earnest.

"No," Arista said, flatly, the realization landing with visible, dawning horror as she actually thought it through. "No, they absolutely cannot."

She went to the dwarves that same afternoon: not for advice on rails, not for machinery specs, but for something considerably more basic.

"Light," she said, standing in Gorthruk's forge with the specific, sheepish energy of someone who had genuinely overlooked something fundamental. "I need a lot of it. Underground. Long-lasting. For a tunnel that's going to have both demons and dwarves working it side by side."

The dwarves, as it turned out, were less confused by the request than outright offended by the implication that it might be difficult.

"You think we haven't solved this?" one of the older miners said, arms crossed, deeply unimpressed. "We have lived underground for generations, Strawberry. Longer than your entire race has needed a way to reach the surface at all."

"...Fair. Extremely fair. Show me."

They led her deep into one of the Republic's oldest working mines, past shaft after shaft, and Arista found herself half-expecting torches, lanterns, maybe some kind of enchanted glowstone she hadn't encountered yet.

What she found instead was an enormous vein of crystal embedded directly in the rock, pulsing with a soft, steady, ambient light that filled the entire tunnel without a single flame or spell anywhere in sight.

"...Okay, that's not what I expected." She stepped closer, studying the vein with open fascination. "What is this?"

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"We call them lightcrystals," the old miner said, with the particular pride of someone finally getting to show off something everyone else had underestimated. "We use these."

"What does it do?" Arista asked, though the answer seemed increasingly obvious.

"Gives light," the old miner said, entirely unbothered by having to state the obvious. "Since our ancestors first found it, and no maintenance required, before you ask."

Arista blinked, genuinely stunned by the implication. "...None at all?"

"None."

She stood there for a long moment, staring at a light source that had apparently been quietly, perfectly solving illumination for the entire Dwarven Republic for generations, while she'd spent six months building steam engines and mana pipelines without once thinking to ask how anyone actually saw underground.

She grabbed her notebook and wrote, in letters considerably larger than usual, underlined twice for emphasis:

NATURAL LIGHTCRYSTALS, DO NOT STEAL THIS IDEA, THE DWARVES ARE EXTREMELY PROUD OF IT

The old miner peered over her shoulder, reading the note, and allowed himself the faintest, most begrudging hint of a smile.

"...You may line the tunnel with them. Properly credited, mind. This is dwarven knowledge, not yours to claim as another freeform invention."

"Wouldn't dream of it," Arista said, already sketching a rough lighting layout along her tunnel cross-section, crystal veins marked at regular intervals beside the mithril pipeline and the adamantium reinforcement notes. "Petrov's going to be thrilled. One less item on the risk list."

Petrov reviewed the lighting layout that evening, tracing a finger along the tunnel cross-section, nodding slowly at the crystal placements.

"For construction, we definitely want the dwarven lightcrystals throughout, consistent, reliable, no maintenance, exactly what a six-thousand-person crew working around the clock actually needs while we're still digging." He tapped the sketch, then paused, something shifting into a more considering expression. "But once construction's done and the network's actually running, you've got two completely different light sources available, and they don't need to serve the same purpose."

Arista leaned in. "Go on."

"The lava," he said. "You're already routing steam engines near it for heat. What if the tunnel sections themselves, the actual rail corridors, not the platforms, used ambient lava glow instead of crystal light? Not open flame, obviously, nothing dangerous, just filtered warmth bleeding through reinforced viewing panels along the tunnel walls. Red-orange light, constant, atmospheric. It'd look incredible from inside a moving train, like traveling directly through the heart of the realm instead of through a sterile, lit corridor."

Arista's grin started creeping in, the specific expression that meant an idea had just landed somewhere she genuinely hadn't expected. "...That's not just lighting. That's branding. Nobody rides a demon metro and forgets what realm they're in."

"Exactly. But then at the stations—" Petrov flipped to a fresh page, sketching a station platform cross-section "—that's where people actually stand around waiting, where you want them comfortable, not staring at ominous red light for ten minutes before their train arrives. That's where the dwarven crystals come in. Cool blue-white glow, steady, calming. Completely different emotional register from the tunnel itself."

"So the actual journey feels like Hell, in the coolest possible sense, not the scary sense, and the stations feel safe and welcoming." Arista was already sketching alongside him now, marking the transition points where tunnel lighting would shift to platform lighting at each station approach. "Red-orange rushing past the windows during the ride, then you pull into a station and it shifts to cool blue the moment you arrive. That's genuinely beautiful. That's not just infrastructure anymore, that's an actual experience."

Petrov nodded, satisfied. "It also solves a practical problem, not just an aesthetic one, passengers get a clear, instinctive visual cue for 'we are arriving' before the train even fully stops. Color shift as a built-in signal, no separate announcement system required."

"...You're very good at this."

"It's what I do." He shrugged, easy. "You build things nobody's thought of. I figure out how to make the things you've already built actually work well for the people using them."

Arista sat back, surveying the finished lighting concept, warm lava-glow tunnels giving way to cool crystal-lit platforms at every station along the entire future network, an aesthetic signature woven into the infrastructure itself rather than bolted on afterward.

"Beelz is going to lose his mind over this," she said, delighted. "He wanted Hell to actually improve for demons living here. This isn't just faster travel. This is Hell looking genuinely, deliberately beautiful for the first time anyone probably remembers."

"That," Petrov said, "was rather the idea."

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