A twilight town.
He didn't know how they'd fit this inside an underground facility, but here he was—standing in a narrow alley paved with stone slabs, the sky overhead stained burnt orange, low buildings with tiled roofs lining both sides, and in the distance a church bell tower casting a long shadow in the dying light. The streetlamps had come on, warm yellow pooling on the ground like spilled honey.
Cozy. Peaceful. Almost nostalgic.
But the air carried the chemical undercurrent of disinfectant, and every ten meters a pink-suited staff member stood like a sentry, reminding you that this was not an evening stroll after school.
Each contestant had been handed a small cloth bag upon entering the town. Ten marbles. Glass, about the size of a thumbnail, catching the twilight with a cheap candy-colored sheen.
The intercom spoke from above:
"Game four: Marbles."
"Each player has been issued ten marbles. Please form groups of three."
"Within each group, compete through any marble game of your choosing. Only one person may leave the town carrying all thirty marbles."
"The other two will be eliminated."
"Time limit: forty minutes."
"Please team up with someone you trust."
That last sentence landed like a knife.
About three seconds of silence. Then someone in the crowd started screaming—"Are you insane? Team up with people you trust and then kill them?"—someone crouched on the ground and began to cry, someone was clutching the person next to them.
Jiang Han stood at the mouth of the alley, gripping the bag of marbles, doing subtraction in his head.
Ninety-eight people. Groups of three. Thirty-two or thirty-three survivors—two eliminated per group, another two-thirds cut away.
And he'd have to choose between Yoon Seo and the old man—
Footsteps came from two directions at once.
Yoon Seo from the left. The old man from the right.
They arrived in front of him almost simultaneously, as if coordinated, though he knew they hadn't planned it. It was because everyone in the dormitory had already assumed the three of them were a unit—every game, every interaction, every exchanged glance had bound them tighter without anyone signing a contract.
Yoon Seo's face was white. She looked at the bag in her hand, then at Jiang Han, then at the old man.
"Three of us. Two have to die."
Her voice was flat when she said it. But Jiang Han saw her knuckles go white around the bag's drawstring.
The old man smiled.
"What's the rush? It's a lovely evening. Let's walk a bit first."
The three of them moved deeper into the alley. From other streets, sounds drifted over: arguing, crying, the occasional gunshot. Some groups had already started. Some had already finished.
They found a quiet corner. One streetlamp, one stone bench, three people sitting in a loose circle. Marbles poured from cloth bags onto the bench, clinking against stone with a clear, bright sound.
"Rules." Jiang Han spoke first. "The announcement said 'any marble game.' Your pick."
Yoon Seo thought for a moment. "Odds and evens. Simplest, fairest. No tricks."
"Fine." Jiang Han nodded. "Round-robin. Two play at a time, whoever hits zero is out."
The old man nodded as well, still smiling. "Whatever you young folks decide."
First round: Yoon Seo versus the old man.
Simple rules—one player conceals a number of marbles in their fist, the other guesses odd or even. Correct guess: you win the marbles from the other player's hand. Wrong guess: you forfeit that many from your own pile.
Yoon Seo went first. She closed her fist around some marbles and extended it toward the old man. "Guess."
The old man tilted his head. "Even."
She opened her hand. Three. Odd. The old man was wrong.
He clucked his tongue—"Oh dear"—and pushed three of his own marbles across to Yoon Seo.
His turn. He held out a trembling fist. "These old fingers don't work so well anymore. Go ahead, young lady."
Yoon Seo: "Odd."
He opened his hand. Two. Even. She guessed wrong. But she only lost two—her net gain was still positive.
Several rounds in, the old man's performance was nosediving. His "guesses" were failing at an absurd rate—five wrong in a row, losing seven marbles. He was down to four. Yoon Seo had sixteen. Jiang Han still had his original ten.
Yoon Seo exhaled, a fraction of tension leaving her shoulders. The old man shook his head with a sigh. "No good, no good. Brain's not what it used to be."
Jiang Han hadn't participated in this round. He sat to the side, hands crossed on his knees, watching the entire exchange.
He was watching the old man's error pattern.
First miss: guessed "even," actual was three (odd). Plausible mistake.
Second miss: guessed "odd," actual was four (even). Plausible.
Third miss: guessed "even," actual was one (odd).
Fourth miss: guessed "odd," actual was two (even).
Fifth miss: guessed "even," actual was five (odd).
Every single time, he'd guessed the opposite.
Pure random chance of getting five in a row wrong was one in thirty-two. Low, but not impossible. For an old man whose "brain wasn't working so well," five consecutive misses wouldn't raise eyebrows.
But Jiang Han had noticed something else.
The old man's fist, when it was his turn to hold marbles for the other person to guess. His grip. Every time he extended his fist, the tightness of his fingers around the marbles was identical. Whether he held one or five, the shape of his hand, the angle of his wrist, the arc of his curled fingers—no variation at all. That wasn't the behavior of someone whose "hands don't work." That was the behavior of someone in precise control of their own body language.
He was performing.
Every "wrong guess" wasn't a mistake. He was losing to Yoon Seo on purpose. He was testing her psychological responses at different stakes. When she bet one marble, she was relaxed. Three marbles, she hesitated for two seconds. Five marbles, her pupils contracted slightly.
He was collecting data.
Preparing for a reversal.
Second round: Jiang Han versus Yoon Seo.
This round was more straightforward. Two sharp minds in genuine psychological combat, no disguises, no tricks. Yoon Seo's strategy was to vary her stakes rapidly, denying any pattern. Jiang Han countered by doing the opposite—maintaining an apparent pattern long enough for her to think she'd cracked it, then breaking it.
Back and forth. Six exchanges later: Jiang Han twelve, Yoon Seo nine. Close, but Jiang Han had the edge.
After her loss, Yoon Seo pressed her lips together, eyes flicking between Jiang Han and the old man. She was running the numbers—the marble distribution across three players. Jiang Han twelve, Yoon Seo nine, the old man nine.
Nobody at zero. Nobody eliminated.
Twenty-three minutes had passed.
The old man's turn. He cradled his nine remaining marbles—during the previous round between Jiang Han and Yoon Seo, his total hadn't changed.
He sighed. A long sigh, the kind that came from the very bottom of the lungs.
"Forget it," he said, pushing his marbles forward. "I'm old. My memory's shot. Can't guess right to save my life. Rather than drag this out, just take them. Split them between you. At least save an old man some dignity."
His tone was so sincere it could have been genuine. A seventy-something man, trapped in a death game, admitting the only thing he was good at was sighing, pushing his stakes across the table. How many people would soften at that image?
Yoon Seo's expression wavered.
Jiang Han didn't move.
He looked at the old man's eyes.
Those cloudy, bloodshot eyes of an elderly man—in the streetlamp's warm glow, they looked especially tired, especially helpless.
But tiredness and helplessness could both be performed.
"You haven't been confused." Jiang Han spoke. "Not for a single second since this game started."
The old man's hand stopped.
"You lost to Yoon Seo on purpose." His voice wasn't loud, but each word was cut into the air with the precision of a needle point. "Your wrong guesses weren't random—you guessed the opposite every time. Five for five. The probability is explainable, but your grip betrayed you. Identical hand shape, regardless of how many marbles. A man whose 'hands don't work' couldn't maintain that level of consistency."
Yoon Seo turned to stare at the old man. The uncertainty on her face shifted to alarm.
"You weren't guessing wrong. You were collecting her data—reaction time, pupil dilation, breathing rate at different stakes. You were preparing for a counter-attack."
The alley held nothing but distant gunshots and the low hum of a streetlamp's current.
The old man's smile froze for one second.
Then it broke.
Not the kind of breaking that meant collapse. The kind where a mask is gently peeled away. All the warmth, the fatigue, the harmlessness on his face melted like a thin layer of wax held over a flame, revealing what lay underneath.
He laughed.
Not the neighbor's-grandfather laugh. A different one.
Clean. Appreciative. Appraising.
"Impressive." His voice changed too—still raspy, but the deliberate frailty had been stripped out, leaving behind something very awake and very sharp. "When did you start seeing through me?"
"Game one."
"Oh?"
"You smiled during a massacre. You could have ended the game with your vote but chose to continue. Your number is 001—the first person registered. Kang Dae's crew robbed everyone but skipped you. You haven't broken a sweat in a single game." Jiang Han said it all in one breath, his gaze never leaving the old man's eyes. "You're not a player."
Yoon Seo sat beside them, lips parted. She was cross-referencing Jiang Han's words with her own observations—all the things she'd sensed but never spoken aloud, the suspicions she'd filed away without naming, now laid out one by one and assembled into a picture she didn't want to see but couldn't deny.
The old man didn't argue.
He drew his hands back from the marbles, placed them on his knees, and straightened his posture.
About ten seconds of silence. The streetlamp hummed overhead.
Then he spoke. What he said had nothing to do with marbles.
"Young man. Do you think there's a way—in a game where three go in and one comes out—for all three to walk out alive?"
Yoon Seo's breathing stumbled.
Jiang Han watched him.
The question didn't sound like a plea. Didn't sound like a desperate old man grasping for a miracle.
It sounded like a man who'd set an exam, waiting for an answer.
The system panel flickered in the corner of his vision. New text:
HIDDEN QUEST UPDATE: 3/5
"The old man is offering you a choice.
This is not a game of marbles.
It is a test."
Jiang Han read the words, then shifted his gaze back to the old man's face.
Twilight was deepening the town into a richer shade of orange. The gunfire in the distance was growing more frequent. Seventeen minutes left on a forty-minute clock.
Three people sat beneath a streetlamp, and before them on a stone bench lay thirty glass marbles scattered in a loose constellation.
The marbles caught the dying light—cheap, pretty little things.
The old man waited for his answer.