The Apocalypse Where Rain Kills Humans

Chapter 8. The Red Rain

"Beatriz, look at the ledge!" Caio’s voice cracked, the pitch rising with the sheer absurdity of what he was seeing.

The scarlet liquid didn't just sit on the brickwork; it hissed with a predatory hunger, far more aggressive than the green mist from before. Where the red drops touched the stone, the masonry didn't just pit—it dissolved into a thick, bloody slurry that slid down the side of the building like melting wax.

"I see it, Caio! Shut up and move!" Beatriz snapped, though her hands were shaking as she shoved the spool of silk into her pack. "That’s not just a higher concentration. The pH level—it’s off the charts. It’s eating the building’s skeleton!"

"The fire escape is iron!" Caio yelled, pointing toward the window they had just climbed through. "If the rain hits the supports, we’re going to drop four stories into a lake of red acid!"

"Then we don't use the fire escape," Beatriz said, her eyes darting around the room. She grabbed her crossbow and slung it over her shoulder. "We use the stairs. We have to go through the interior, even if it’s crawling with more of those things."

"The spiders?" Caio looked at the dark hallway, his heart trying to hammer its way out of his ribs. "You want to go deeper into the nest?"

"Would you rather stay here and wait for the ceiling to melt onto your head?" she countered, already sprinting toward the door. "Follow me! And don't you dare stop for anything!"

They burst into the hallway, their boots thumping against the wet, web-choked carpet. Above them, the ceiling groaned—a deep, structural moan that vibrated through the floorboards. A drop of red liquid leaked through a light fixture, landing inches from Caio’s heel. It ate through the carpet and the floorboard beneath it in a literal second.

"System!" Caio roared, his vision swimming with blue text. "I need a way out! Give me the Shelter Compass!"

[SHELTER COMPASS ACTIVATED.]

[TARGET: SAFE ZONE - LEVEL 1.]

[CALCULATING OPTIMAL ROUTE... MINIMIZING EXPOSURE...]

A glowing blue line snapped into existence on the floor, snaking through the darkness of the apartment corridor.

"Beatriz! Follow the line!" Caio shouted, pointing at the HUD projection. "It’s calculating the shortest path with the most overhead cover!"

"I don't see a line, Caio! Just run!" she yelled back.

"Right, right! Just stay behind me!"

They dived into the stairwell. The air was thick with the smell of scorched concrete and something metallic, like an overheated radiator. As they descended, the sounds from outside grew more terrifying—a rhythmic, heavy thumping as the red deluge slammed into the city. It didn't sound like rain anymore; it sounded like a bombardment.

"My suit!" Beatriz suddenly gasped, stumbling on the landing of the second floor. She reached back, clutching at her shoulder. "Caio, my suit is smoking!"

Caio skidded to a halt, turning back. The high-grade Stalker Silk, which Beatriz had touted as nearly indestructible, was blackening. Small, pin-sized holes were opening up where the spray from the windows had touched her.

"How is that possible?" Caio asked, his eyes wide. "You said that stuff was non-reactive!"

"It’s not supposed to melt!" she hissed, her face pale with pain. "The red... it’s not just acid. It’s an organic solvent. It’s dissolving the silk’s molecular bonds! Agh! It’s on my skin!"

"Don't touch it!" Caio grabbed her arm, steadying her. "We’re almost at the lobby. If we can get across the street, the warehouse is right there!"

"The street is open air, Caio!" Beatriz looked at him, her eyes wide with a rare flash of genuine terror. "We’ll be dead before we hit the curb. Look at my shoulder! If a full drop hits me, it’ll go straight through my bone!"

"I have the poncho!" Caio said, though the plastic was already warped and brittle. "I’ll cover you!"

"Your plastic is garbage compared to this silk, and even this is failing!" she argued, her breath coming in ragged gasps. "We aren't going to make it."

"Yes, we are!" Caio gripped her hand, pulling her toward the ground floor. "Tlaloc! Talk to me! How do I get her across?"

"The girl is right," the voice boomed in his head, sounding remarkably bored. "Her gear is becoming a liability. The red rain—the 'Crimson Deluge'—is designed to strip the world of its organic defenses. You, however, have a Shelter resonance. Use it, you idiot."

"Use it how?" Caio yelled out loud, ignored Beatriz’s confused look.

"Project the field! Like you did with the roof, but move it with you!"

"I don't have enough energy!"

"Then use your own life force as a catalyst!" Tlaloc growled. "Or let her melt. It makes no difference to me."

"Caio, who are you talking to?" Beatriz demanded, her voice straining as another sizzle erupted from her leg. "We have to move! The lobby ceiling is sagging!"

"Beatriz, get on my back," Caio said, his voice dropping into a low, desperate tone.

"What? No! You're already injured!"

"Get on my back right now!" Caio roared, his command cutting through the sound of the storm. "My interface can project a small field, but I have to focus. I can't do it if we're running separately. I need to be the shield!"

Beatriz hesitated for a fraction of a second before she leaped onto him, her arms locking around his neck. She was lighter than he expected, but the weight still made his knees buckle for a moment.

"If you drop me, I’m killing you before I dissolve," she muttered into his ear.

"Fair enough," Caio panted. "Now, hold on tight. System! Divert all remaining energy to a forward-facing kinetic barrier! Overcharge it!"

[WARNING: VOLATILE ENERGY TRANSFER DETECTED.]

[USER PHYSICAL INTEGRITY AT RISK.]

[BARRIER STRENGTH: 300%... DURATION: 20 SECONDS.]

"Go! Go! Go!" Beatriz screamed.

Caio kicked open the lobby doors. The world outside was a nightmare of deep, pulsing red. The street was no longer a street; it was a river of scarlet gore. The air was so thick with the caustic rain that visibility was down to five feet.

He bolted.

As soon as they stepped out, the red rain slammed into his projected barrier. It sounded like gravel hitting a windshield. Crack-crack-crack. The blue light flickering in front of him was turning a violent purple as it struggled to neutralize the red liquid.

"The barrier is holding!" Beatriz shouted, but then she shrieked. "Caio! Your back! The spray!"

"I don't care!" Caio gritted his teeth, his muscles screaming.

The wind shifted, whipping a sheet of red rain around the side of his barrier. It hit his back and shoulders. The sensation wasn't a burn—it was an erasure. It felt like his skin was being unzipped from his spine.

"AAAGGHH!" Caio’s roar was primal, fueled by pure, unadulterated agony.

"Caio! You're smoking! Your hoodie is gone!" Beatriz was crying now, her hands tightening around his chest. "Put me down! You’re going to die!"

"Shut... up!" Caio wheezed, his vision blurring. He could smell his own flesh cooking, a sweet, sickening scent that made his stomach flip. "The door... where's the door?"

"Ten meters! To the left! There!"

The warehouse stood like a dark titan in the red haze. The iron gates were melting, the heavy metal dripping like thick syrup. Caio didn't slow down. He threw his body forward, his boots melting into the sludge of the asphalt with every step.

"Almost... there..."

He reached the side door—the one he had broken earlier. The steel was pitted, but it was thick. He slammed his shoulder into it, the impact jarring his burnt back and sending a fresh wave of white-hot agony through his brain.

"Open it! Open it!" Beatriz screamed, reaching over his shoulder to grab the handle.

The door creaked, the hinges groaning as the red rain began to eat through the frame. They tumbled inside, crashing onto the concrete floor of the stairwell as the heavy door slammed shut behind them.

[SHELTER PERIMETER BREACHED.]

[SEALING INITIATED.]

[INTEGRITY RESTORED.]

The sound of the rain vanished instantly, replaced by the heavy, pressurized silence of the Level 1 Sanctuary. The blue light of the system washed over the room, cool and clinical.

Caio collapsed onto his stomach, his breath coming in jagged, wet rattles. He couldn't move. His back felt like it had been flayed open and then rubbed with salt.

"Caio? Caio!" Beatriz scrambled off him, her own suit tattered and ruined. she crawled around to look at his back and let out a horrified gasp. "Oh god... Caio, your back is... it’s a mess."

"Did... did we make it?" Caio whispered, his face pressed against the cold concrete.

"We're inside," she said, her voice trembling. She reached out, her fingers hovering over his charred skin but too afraid to touch. "The system... it sealed the door. We’re safe."

"Good," Caio breathed, his eyes fluttering shut. "That’s... that’s good."

"Don't you dare pass out on me!" Beatriz snapped, though her voice was thick with emotion. "You just carried me through a literal sea of blood, you idiot architecture student! You don't get to sleep yet!"

"I’m just... resting my eyes," he muttered.

[TRIAL OF THE STORM GOD: SURVIVAL PHASE COMPLETE.]

[USER RANKING: INCREASING...]

[NEW TRAIT UNLOCKED: PAIN TOLERANCE (LEVEL 1).]

"Tlaloc..." Caio groaned. "Tell the system... to shut up."

"You did well, boy," the voice whispered, for once devoid of its mocking edge. "Rest. The sanctuary will hold. For now."

Beatriz sat back against the wall, watching the door as the red rain continued to pound against the other side, a rhythmic thud-thud-thud that sounded like the heartbeat of a dying god. She looked at Caio, then at her own trembling hands.

"What have we gotten ourselves into?" she whispered to the darkness.

There was no answer, only the faint, steady hum of the blue light, keeping the world at bay.