The Machine That Counted Regrets

By the time the rain began to fall over Tokyo, the city already looked like a reflection of itself—lights blurred into streaks of color on every wet surface. From the window of the Châtelet Café, Ayumi Sato watched umbrellas bob past like dark flowers, the scent of espresso and warm sugar curling around her as if she were in some small Parisian corner instead of a side street in Shinjuku.

The café itself was an oddity: carved wooden chairs with lion feet, brass lamps with green glass shades, an antique clock on the wall whose Roman numerals were faded with age. Above the bar, a shelf of dusty European knickknacks—porcelain dancers, tiny metal towers, a miniature Venetian mask—stood guard over the bottles.

And behind the counter, perpetually drying the same glass, stood Lucien Moreau.

“You’re staring again,” he said in French-accented Japanese, without looking up.

“I’m thinking,” Ayumi replied, swirling the last sip of her café au lait.

“You only stare like that when you’re about to do something stupid for a story.”

She smiled despite herself. “It’s called investigative journalism, Lucien. Not stupidity.”

“Mm.” He finally raised his eyes to her. They were a soft gray, like the sky before snow. “Which is why my café has been used as your unofficial newsroom for three years.”

To his point, her laptop was open on the small round table, the screen glowing with an email whose subject line kept pulsing in her mind.

URGENT – LEAD FOR YOUR ‘URBAN LEGENDS’ COLUMN

The sender was anonymous. The body of the email contained only a single photograph: a grainy, sepia-toned image of a massive machine in a shadowy room. Gears, cogs, and brass arms spread outward in a dizzying array, like an exploded cathedral of metal. In the foreground, a wooden plaque bore a name in German script, barely legible:

Die Reue-Maschine.

“The Machine of Regret,” she had translated automatically, lips moving unconsciously.

Below the photograph was an address in Japanese: a district she knew. The old foreigner’s quarter, perched on a low hill above the modern maze of Shinjuku. During the Meiji era, they had built stone villas there, importing European architects and aesthetics to dress Japan in foreign styles for foreign eyes. Most of those mansions had been demolished to make way for high-rises.

But not all of them.

“You’ve got that look,” Lucien murmured. “What is it this time? Another haunted vending machine? A cursed manga?”

“A machine,” Ayumi said slowly, tapping the trackpad to enlarge the photograph. “From Europe. Left in a house above the city. Supposedly built to measure regret.”

The gray in his eyes deepened. “You get this from a source you trust?”

“No. Anonymous.” She shrugged, but felt a prickle along her spine. “But it fits the column. ‘Tokyo’s Hidden Myths.’ If it’s a hoax, it’s a good one.”

“And if it’s real?”

“That’s where the fun starts,” she said lightly, though her fingers curled tighter around the mug.

Lucien dried the glass more thoroughly than necessary. “There is a reason some things are left to rust, Ayumi.”

She closed the laptop with a click that sounded louder than it should have. The rain picked up outside, drumming on the awning in a rhythmic pulse.

“Come on,” she said, standing and pulling on her trench coat. It was navy blue, double-breasted, with a cinched waist that made her feel like she belonged in some noir film set in Paris rather than Tokyo. “Walk me to the station, at least. Then you can go back to pretending you don’t like being curious.”

He hesitated, then hung the towel carefully over the counter. “Which house is it?”

She told him the address. Lucien’s face went still.

“That place is not on any of your tourist maps,” he said quietly. “The locals avoid it. They say it hums at night when the wind is wrong.”

Ayumi laughed. “Machines hum, Lucien. That’s what they do.”

“They say it hums even though there is no electricity connected to the property.”

For a moment, the café felt colder. The antique clock ticked overhead, relentless.

Ayumi straightened her shoulders. “You’re doing it again.”

“Doing what?”

“Making it sound like a ghost story. It’s probably just some derelict property with old junk inside. At best, I get a good atmospheric piece. At worst, I get tetanus from a rusty nail.”

“That is not reassuring,” he muttered.

“Want to come with me?” she teased.

His mouth twitched. “I have customers.”

The café was empty.

She raised an eyebrow, and for a moment something flashed across his face—a conflict she couldn’t name. Then he shook his head and reached under the counter, pulling out a small brass object: an old skeleton key on a chain.

“What’s that?”

“A little Parisian superstition,” he said, pressing it into her hand. The metal was warm from his palm. “A café owner once told me that if you carry the key of a place that welcomes you, no locked door can truly trap you.”

She smiled, charmed despite herself. “That’s impractical and romantic.”

“Exactly,” he said. “Take it.”

She slipped the chain around her neck, the key settling just below her collarbone. Its weight was oddly comforting.

Outside, the city swallowed her up—a blur of umbrellas, the glow of signs in Japanese and English, the smell of wet asphalt and grilled skewers. But as she rode the train toward the older district, the modernity thinned. Glass and steel gave way to low, stone walls and sharply peaked roofs that seemed transplanted from another continent.

By the time she reached the hill, the rain had lessened to a mist. The air was heavy with the scent of wet pines and old stone.

The house stood at the end of a narrow, cobbled lane—cobbled, like in some European village rather than Tokyo. Its façade was a strange marriage: European arches and carved stone cornices sat atop a base of dark wooden beams in a distinctly Japanese pattern. Ivy crawled up the walls, and stained-glass windows glimmered faintly, depicting unfamiliar coats of arms.

A wrought-iron gate, its bars twisted into delicate patterns of leaves and roses, stood half-open. No lights inside. No movement.

Ayumi’s heart beat a little faster.

She clicked on her phone’s recorder and spoke softly, out of habit. “Urban Legends series, entry number twenty-three. Location: former foreigner’s villa in Shinjuku’s old quarter. Time: 20:17. Weather: light rain. Objective: verify the existence of a so-called ‘Machine of Regret.’”

Her voice trembled only slightly.

She pushed the gate wider. Its hinges screamed, then fell silent.

The path to the front door was lined with stone angels, their wings blackened by time, their faces turned toward the city below as though watching its progress. The door itself was heavy oak, featuring a brass handle in the shape of a lion’s head.

Ayumi tried it. Locked.

She stepped back, assessing. A rational part of her mind said: come back in daylight, find the owner, get permission. Another part—the one that had dragged her into derelict subway tunnels and onto rooftops at midnight—said: the story is inside.

Her fingers brushed the small brass key around her neck.

“That’s ridiculous,” she told herself. “This key is for a café in Shinjuku, not—”

On impulse, she lifted the key and held it up to the antique keyhole. The shape was different—her key was slender, the door’s lock wide—but when she slid it in, there was a soft, almost polite click.

The door opened inward.

Ayumi froze, one hand on the handle, the other clutching her phone. The rational part of her brain flailed; the rest of her surged forward, carried on a wave of adrenaline.

“Okay,” she whispered. “Urban Legend twenty-three just upgraded.”

She stepped into the house.

The air inside was cool and dry, smelling faintly of dust and machine oil. A grand foyer opened before her, its marble floor patterned in a checkerboard like a European ballroom. A sweeping staircase curved upward, its banister carved with vines and serpents. On the walls, portraits of stern-faced men and women in Victorian attire watched her with painted eyes.

The door sighed shut behind her, the sound echoing through the empty halls.

Ayumi’s footsteps rang out as she moved around, phone held up like a torch. “Interior seems intact,” she murmured into the recorder. “No obvious signs of recent habitation. Or squatters. Too clean.”

She reached a door on the left, its wood darker than the rest. A plaque next to it bore a name in German:

Emil Adler, Konstrukteur.

“Adler,” she repeated, tasting the foreign word. It meant eagle, she remembered from a long-forgotten German class. “Constructor.”

This door, too, was locked. This time, when she slid the café key into the lock, it did not fit. She jiggled the handle, pushed her shoulder lightly against it.

Nothing.

She stepped back, scanning the hallway. At the end, she noticed a narrow staircase leading down instead of up, disappearing into darkness.

Basements in Japanese houses were rare. Basements in hybrid European-Japanese mansions were the ones where, in every horror movie, something waited.

Ayumi’s pulse hammered. She swallowed, hit the flashlight icon on her phone, and began her descent.

The stairs creaked under her weight. The smell of machine oil grew stronger, laced with something metallic and sour that she couldn’t name. At the bottom, the stairwell opened into a broad underground chamber.

Her light swept across brick walls lined with shelving, workbenches cluttered with tools frozen in the act of repair, as if someone had just stepped away for tea and never returned. But her gaze was drawn instantly, irresistibly, to the center of the room.

There, resting like some mechanical altar, was the machine from the photograph.

It dominated the chamber. A foundation of polished brass gears and cogs rose into a tangle of rods, levers, and oscillating arms. At its front, a semicircular console bristled with keys—some like typewriter keys with letters in German, Japanese, and English; others like organ stops labeled with single words: ZEIT, ERINNERUNG, GUILT, APOLOGIE. Above the console, a circular dial like an enormous clock face was divided not into hours, but into phrases in several languages.

Her flashlight flicked over the words:

PAST / PRESENT / FUTURE

WHAT WAS / WHAT IS / WHAT COULD HAVE BEEN

Ayumi’s mouth went dry.

Near the base, a small brass plaque was bolted into the metal. She crouched, angling her light.

In German, then Japanese, then halting English:

This apparatus calculates the weight of human regret.

For every life, there is one moment that defines all others.

Feed it your choices, and it will show you the one you cannot escape.

The silence in the room seemed to thicken, pressing against her eardrums. The machine was utterly still. Yet as she drew closer, she could feel—no, imagine—a faint vibration in the floor.

As if it were only sleeping.

Ayumi lifted her phone again and forced her voice to steady. “Urban Legends, entry twenty-three. The Machine of Regret is real.”

Her reflection stared back at her from a polished brass panel—dark hair damp from the rain, eyes wide, the small café key glinting at her throat.

Behind her, somewhere in the darkness of the mansion above, a floorboard creaked.

She wasn’t alone.