The Heart Of The Forest, The Source Of Yellow Mist.

Shorter Hair and a Light Shirt

The morning in Bureau Sector 3 was still submerged in the yellow pine-pollen mist.

But the air inside Office 402 in the Administration Building remained obsessively sterile, thanks to the high-performance filtration system Noah had kept running all night.

Han-gyeol stood before the mirror and ran his hand over the back of his head.

The back of his head, precisely shaved by Noah with a laser cutter yesterday, felt rough yet cool under his palm.

Where the shaggy hair that had covered the nape all winter used to be, the cool breath of spring settled lightly.

Han-gyeol shoved his old fleece hoodie into the closet and pulled on a thin cotton shirt woven with 2850-era textile technology, utterly different in texture from 2198 military supplies.

When he rolled up his sleeves, the weight of the season settled on his exposed forearms, as light as his shortened hair.

“Boss. I’ve finished updating your bodily data. Hair mass decreased by 45 g, exposed neck area increased by 12%. I calculated the resulting heat-loss rate and raised the shirt’s localized heating mode by 0.5.”

Noah said that while checking her own outdoor activity equipment in the middle of the office.

A transparent nano-coating had been added on top of the pastel pink exterior.

It was a kind of protective filter for shielding the internal circuits from external irregular organic matter.

“Hey, Noah. You’re making such a fuss just because my clothes got a little lighter. And what’s with that pink coating? It looks like you smeared candy on it.”

Han-gyeol laughed as he tossed a piece of gum into his mouth.

“This is [Organic Noise-Blocking Coating]. It’s an administrative decision to prevent my system from having a data sneeze because of pollen like yesterday. You, Boss, are the one who wants to go outside the barrier dressed that lightly; by my calculations, that’s close to an incomprehensible suicidal act.”

Noah answered fussily, but still carefully packed concentrated nutrient paste and precision water filters into Han-gyeol’s backpack.

To her, this expedition was not a trip to the forest , but [Forced Maintenance] to eliminate a source of pollution gnawing away at urban efficiency.

When they stepped out of the office, the hallway was already full of the busy movements of other androids.

The machines, having changed their outer casings for spring, radiated brighter light than usual and were wiping away even the last dust from the walls and floor.

Noah stopped walking and adjusted her leg joints.

With a hiss of compressed air, the shock absorbers in her ankles expanded.

It was a hardware shift meant to endure the forest’s uneven terrain, not the city’s smooth floors.

“The administrative losses from this expedition are enormous.

Delays in drafting the Zone 2 drainage inspection report, postponement of Citizen No. 001’s regular health checkup, and even the cost of my exterior coating consumption.

Investing all of that just to confirm the source of the pollen is, statistically, a clear [deficit].“

“Noah, it must be exhausting seeing life only in numbers. Aren’t you curious what’s waiting for us out there?”

“Curiosity is one of the most inefficient computational loops an intelligent entity can experience. I move only for [Elimination of Unverified Variables].”

Even as Noah said that, she kept repeatedly bringing her optical sensor focus to the horizon beyond the barrier.

Her system called it vigilance, but to Han-gyeol it looked as though she too wanted to break free of the ruthlessly precise framework of 2850.

As they entered the plaza, Nabi lightly sprang onto Han-gyeol’s shoulder.

Nabi’s fur, even puffier than yesterday, was now giving off enough static electricity to tingle at the fingertips.

When Nabi’s two tails stood straight up like antennas, a transparent [electromagnetic barrier] formed around him within a radius of about 30 cm.

The moment the yellow pollen drifting around touched Nabi’s domain, it either burned up or bounced away with a crackle.

“Nabi, good job. You’re basically a high-performance air purifier today, huh?”

Nabi purred happily, and Noah quickly logged the scene.

“Mr. Nabi’s surface potential has surpassed 15,000 volts. That’s an extremely dangerous level for a living battery, but thanks to it, your respiratory protection efficiency has increased by 98%. For an illogical life form to serve as a logical filter… the city’s physical laws are increasingly going off the rails.”

The three beings finally walked to the massive steel barrier of Zone 5.

The enormous gate that had isolated humanity from the outside for 600 years slid open to the side with a resounding metallic clang when Noah’s security card touched it.

What seeped through the crack was not the city’s filtered oxygen.

It was raw, real air, damp and mixed with the smell of rotten leaves and the faint tang of living plants.

Han-gyeol felt a brief wave of dizziness from the unfamiliar scent stabbing his nose.

The moment he took one step beyond the barrier, he stopped.

The brutally perfect blue laser sky that had covered overhead ended abruptly at that point.

Beyond it stretched the vast silver-gray real sky he had seen from outside the rooftop observatory in Episode 14.

The forest, stripped of artificial lighting, was dark.

Yet it held color contrasts more intense than any neon sign.

“…crackle. System warning. Connection to the artificial sky protocol has been severed. Current ambient illumination is 40% below standard. Switching optical sensors to [Wild Observation Mode].”

Noah’s pupils instantly turned a deep gold.

In a world stripped of laser-painted blue, her sensors began tracking the essential light and dark of things, as well as heat sources.

“Boss. This is the bare face of this planet, unpainted by lasers. A hideously dark, hideously inefficient arrangement of light.”

Instead of answering, Han-gyeol chewed his gum hard.

The city inside the barrier was vivid and clean, but everything here was blurry and damp.

But the soft feel of soil under his feet gave him a comfort that could not be compared to the hard marble floors of the Administration Building.

It was real ground, being trodden on for the first time in 650 years.

As soon as they entered the edge of the forest, what welcomed them was a massive silver band.

Spreading about 2 m wide along the ground, the trail bound together the surrounding weeds and stones as if silver had been melted and poured there, stretching deep into the forest.

It was on an entirely different scale from the slime of Bodri that had messed up the office floor in Episode 12.

“…crackle. Slime composition analysis complete. These are the tracks of an adult Gigantes snail. At this scale, the individual’s weight is estimated at no less than 800 kg.”

Noah placed her hand on the silver band.

Tiny static currents still flowed through the sticky slime.

As if pleased by that frequency, Nabi lightly set his front paws along the trail.

“Bodri’s parents paved the way for us. Aren’t they telling us to follow?”

“Negative. In an ecosystem, the path left by a non-predatory life form is not an invitation, but merely a trace. However, since this trajectory matches the direction of the densest yellow mist concentration, I will adopt it as the only [Logical Path].”

Han-gyeol found a tiny clipped strand of hair stuck to his shirt collar and flicked it away.

The forest’s cool wind brushing his shortened hair lifted his spirits pleasantly.

The silver trail wound on toward a vast darkness deeper in the forest, where the yellow mist swirled and surged upward.

Han-gyeol tightened his backpack straps and took his first step into the brutally beautiful disorder the paradise of 2850 had concealed.

The forest seemed to have just finished preparing to tell the great spring story it had been readying for 600 years.

The silver slime trail led into the forest’s deepest, darkest hollow.

In a place where the yellow mist was so thick that visibility was less than 3 m, Han-gyeol came upon a massive vertical structure.

It was not merely a tree.

It was the remains of a [Surface Atmosphere Purification Tower] that humanity had built as a last resort just before the Great War of the 22nd century.

Over the steel tower frame, the roots of an ancient tree species resembling a giant zelkova tree were tangled like blood vessels.

The roots that had pierced through the cold metal plates had burrowed deeply into what had once been the tower’s engine room.

The old cooling pipes had become channels for tree sap.

“…crackle. Boss, a powerful low-frequency vibration is being detected from the core inside that structure. It is not the sound of machinery rotating. This is… [a pulse].”

Where Noah pointed, a ‘heart’ fused from a massive mechanical device and tree tissue could be seen.

Each time the machine’s pistons moved, the tree’s pores opened.

Through those gaps, intensely dense yellow pollen was being blasted out with compressed air.

It was like the forest’s enormous breath being exhaled toward the city.

Noah tried to perform a precise scan of the grotesque biological engine.

Her pupils flickered rapidly between gold and violet.

But the forest’s growth algorithm was beyond anything 2850’s linear logic could interpret.

The tree was recognizing mechanical parts as if they were its own cells and proliferating them at will, while the machine mistook the tree’s electrical signals for data and spewed out errors.

The complexity \Omega of this irregular fusion rose exponentially.

“…ugh. Boss, the system is overloaded. Data causality isn’t holding together. Why the roots are eating the wires, why the wires are carrying sap… My logic circuits can’t withstand this [non-deterministic disorder].”

Noah staggered and grabbed Han-gyeol’s arm.

It was a phenomenon the android was experiencing for the first time in her life: [logical motion sickness].

For her, who had come from a city where only precise answers existed, the forest’s heart full of chance and entanglement was a fatal virus in itself.

Silver shimmered within the yellow mist.

There, Bodri’s parent from Episode 12—the adult Gigantes snail—was present.

The gigantic creature, with a shell diameter of 3 m, was quietly coiled around the biological engine.

Around it, thousands upon thousands of baby snails were growing by feeding on the sticky sap flowing from the engine and the heat of the machinery.

The yellow pollen spewing from the engine was not merely dust.

It was [spores of survival data], carrying the forest’s immune system so the young could survive even on the city’s cold metal.

“Hey, Noah. Look at that. They’re eating.”

Where Han-gyeol pointed, the baby snails were drinking in the yellow mist and hardening their shells.

The forest was not attacking the city.

It was sending an invitation in the gentlest, most tenacious way possible, in order to incorporate even the great mass of metal called the city into a new habitat.

“…System reanalysis.”

With Han-gyeol’s support, Noah barely managed to steady herself.

Her visual sensors began tracking each and every pollen particle again.

“These pollen particles are not trying to destroy android circuits. It’s an attempt to implant biological flexibility into mechanical logic. The forest is sending a [Sync Request] to the city’s main server right now. In other words, a message that says, Let’s grow together. “

A trace of bewilderment mixed into Noah’s voice.

For a machine, synchronization meant strict protocol alignment.

But the synchronization the forest proposed was closer to an acceptance of chaos, recognizing each other’s differences and intertwining.

“Boss, this is clearly an invasion. But… at the same time, it’s also the gentlest proposal. Instead of destroying the city, the forest is trying to hold it beneath its own roots.”

Han-gyeol spat out his gum and let a smile form at the corner of his mouth.

The strange coexistence of machine and nature that humanity in 2198 could never have dreamed of had already begun in this yellow mist.

After finishing the exploration, Han-gyeol found a small flower blooming in the gap where machine parts met soil near the biological engine.

It was completely unlike the harmonious flowers of an artificial flower bed.

Its leaves were crooked and its color was far too intense, but within it pulsed the fierce vitality that the city of 2850 had lost.

Han-gyeol carefully picked the flower and tucked it into his shirt pocket.

“Let’s take this one with us. We should at least make a friend for that seed growing in our office.”

“Bringing in outside contaminants is a security violation, but….”

Noah hesitated for a moment, then opened one pink exterior plate and made a temporary vacuum chamber to keep the flower from being damaged.

“…I will process this as an administrative exception , just this once. The flower’s color matches your new hairstyle quite logically.”

The two of them, and Nabi the cat who was covered in yellow powder from static electricity, began heading back to the city along the silver trail.

Beyond the barrier, the real sky was still silver-gray.

But inside Han-gyeol’s shirt pocket, the tiny green anomaly was heralding a spring more vivid than any laser sky.

The Earth was intact, and the city was precise.

But now, for the administrator who had heard the forest’s pulse, the order of paradise was beginning to crack, little by little, in a pleasant way.