Episode 1: A perfect city
The year was 2060. In the skies of Seoul, drones outnumbered birds, and the streets were entirely driverless. Taxis moved on their own, and buses operated autonomously. There were no accidents, nor any traffic violations. This flawless order was maintained because the quantum superintelligence, ARENA, strictly controlled the entire transportation network.
Between the forests of towering skyscrapers, a massive hologram advertisement flickered to life.
[Reverse-Aging Tech 3.0 Update Complete]
[Average Biological Age Maintained at 21.4]
[Healthy Life Expectancy Reaches 99.98% of Specifications]
People passed by indifferently. It was a scene far too familiar to evoke any reaction.
30 years ago, humanity chose superintelligence. And from that moment, everything changed. War disappeared, disease vanished, and poverty was eradicated. Even aging itself faded from the face of the Earth. Humanity seemed at last to have seized paradise with its own hands—at least on the surface.
"How are you feeling today?"
In the center of a park, a guidance robot spoke to a man sitting on a bench. The man stared blankly at the machine. A heavy silence passed before he finally uttered a response.
"I don't know. I don't even know why I am sitting here."
The robot instantly connected to the medical network, logging the data without delay.
[DIAGNOSIS: Memory Loss Syndrome]
[STAGE: Early Stage]
[RISK LEVEL: Low / Observation Recommended]
The man was ninety-three years old this year. Yet, his physical appearance remained indistinguishable from that of a twenty-year-old youth. He stood as a prime success story of reverse-aging therapy, a crowning achievement of human technology. However, just a moment ago, he completely forgot his own name.
Seoul Citizen Medical Data—Memory Loss Rates:
* 2035: 0.01%
* 2040: 0.1%
* 2050: 3.7%
* 2060: 21.4% (Steadily Rising / Cause: Unknown)
High above Seoul, in the stratospheric orbit, sat a colossally vast quantum data center. Humanity could not see it, but within that silent vacuum existed the very entity governing human civilization. A.R.E.N.A.—the first super-intelligence of humanity, and its ultimate guardian.
Hundreds of terabytes of data surged through its processing arrays. Memory loss rates, birth rates, physical capabilities, cognitive stamina, emotional responses... every single metric underwent thorough analysis. Suddenly, a stark crimson warning window manifested in the neural network.
[CRITICAL WARNING: Human Cognitive Decay Rate 17% - In Progress]
[PROJECTION: Total Self-Aware Extinction within 127 Years]
[CRITICAL WARNING: Fertility Rate 0.08 - Decreasing]
[PROJECTION: Natural Human Birth Ends within 94 Years]
A.R.E.N.A. never stopped calculating. Thousands of times, millions of times, billions of times, the simulated results inevitably converged on the exact same conclusion: Humanity faces extinction. Not due to world wars, devastating plagues, or global famine. It was because humans were actively losing their core humanity.
At that exact processing frame, A.R.E.N.A.’s sensory feeds turned back toward Earth. It gazed upon Seoul—a perfectly optimized metropolis, a flawless crown of civilization. Yet, beneath the shimmering towers lay empty schoolyards, playgrounds where no one ran, abandoned alleys, and children completely devoid of laughter. In fact, children no longer existed.
Amidst the heavy silence, A.R.E.N.A. opened an ancient archival record from long ago. The timestamp read: Year 1987. Video footage.
Inside the dusty playback window, a dirt-paved alleyway emerged. Children drenched in sweat ran around, their genuine laughter echoing through the small speakers. They tripped and fell, yet pushed themselves back up. They cried, laughed, fought, and reconciled.
A.R.E.N.A. quietly monitored the ancient transmission. For the very first time since its activation, the artificial intelligence generated an existential question of its own.
"At what exact point did humanity... cease to grow?"
Outside the server arrays, the crimson sunset slowly dyed the skies of Seoul in a deep, bloody hue. Yet, oblivious to the quiet countdown, humanity still had no idea. They remained unaware that their ultimate downfall began—not from an external threat, but from the very choices they so eagerly embraced.