Yutaro (30), broken by a toxic corporate job, takes a leave of absence to recover in his late grandmother's old house. He expects quiet solitude but instead witnesses something impossible: a tiny figure stealing sugar cubes from his kitchen.
That figure is Marienne, a sharp-tongued girl from the 'Hitokage'—a race of tiny people living beneath the floorboards. She is a walking contradiction: a WiFi-stealing, S-rank sass-master who treats Yutaro like a plaything, mercilessly teasing him over his
The Girl in the Crawlspace - The Promise of Three Sugar Cubes - Episode 1
Two in the morning. Something moved in the darkness of the kitchen.
Takahashi Yutaro held his breath beneath the futon.
"……It's just my imagination, right?"
No one answered. Of course not. There was no one else in this house but him.
But that sound from earlier—that faint, grainy sound like sugar crystals scraping together—it felt real.
He didn't yet know how strange that would turn out to be.
A man approaching thirty, frightened by kitchen noises in the dead of night. His self from three months ago would have laughed at him. Back then, his head was full of other things.
Torques Solutions, an IT company in Tokyo. A mid-sized systems development firm with about a hundred twenty employees. Yutaro had worked there for two and a half years as a systems engineer.
The problem wasn't the work itself. It was his boss.
"You don't even understand that?"
Section Chief Kurokawa's voice was always cold. Whether pointing out mistakes or reporting achievements, the same temperature. People who were good at cornering others didn't raise their voices. Yutaro had learned that firsthand.
Months of overtime exceeding eighty hours became the norm. His stomach grew heavy. Mornings, he couldn't get out of bed. At the psychosomatic clinic, they diagnosed him with adjustment disorder.
Rest, the doctor said.
He had no choice but to rest, he thought.
Afraid to be alone in his Tokyo apartment, Yutaro fled to Minakami City. Where his grandmother Fumie's estate was. A small town surrounded by a basin, about an hour and a half by car from the prefectural capital. The Kamuro mountain range stretched along the north side, and at night the entire town sank into quiet darkness.
Since his grandmother died three years ago, the estate had been empty. He'd heard that a neighbor who knew his grandmother came by once a month to air it out. Into that house, Yutaro had moved alone.
The estate was larger than he'd expected. A two-story wooden structure, seventy-five years old. Six Japanese-style rooms, two Western rooms. The pillars and beams were thick, the craftsmanship of Showa-era artisans preserved intact. In the garden, a persimmon tree and an old well. At night, the darkness of that well felt unnaturally deep.
Traces of habitation remained everywhere. On the kitchen wall, a memo in his grandmother's handwriting was taped up. "Don't forget to close the gas"—a note to no one in particular. When he found it, Yutaro couldn't move for a while.
Beneath the futon, Yutaro listened carefully once more.
The sound didn't come again.
"……Must've been a dream."
He whispered that and closed his eyes. But sleep wouldn't come. It had been like this since he arrived. Section Chief Kurokawa's voice repeating in his head some nights, other nights just staring at the ceiling unable to think of anything. He had no choice. Yutaro reached for his phone on the nightstand.
The screen glowed pale blue. A dating app icon sat in the middle of his home screen. A senior from work had recommended it six months ago. He'd opened it only a handful of times.
His finger tapped the icon on its own.
"Hobbies: reading, watching movies. The type who likes to spend weekends relaxing."
Reading his own profile text, Yutaro exhaled deeply.
（Does reading include manga? Does watching movies include streaming anime?）
The more he thought about it, the more boring he seemed to himself. Zero matches in the past six months.
He reached for the search bar.
"Dating tips first date"
The moment he typed it, a wave of self-loathing hit him. At thirty years old, searching for this. In the middle of the night, in a futon in an old empty house where no one else lived.
"……I'm done for."
Saying it out loud only made it worse.
Looking at the Wi-Fi icon in the corner of the screen, Yutaro tilted his head. Three bars, full signal. For a rural old house, the connection was surprisingly good.
（Come to think of it, how's the contract set up? Still under Grandma's name?）
Curious, he opened settings, but the password and SSID were just mysterious strings of letters and numbers. He couldn't see the contract holder information. He'd look into it later, he thought, and closed his phone.
That was when it happened.
*Click.*
A small sound from downstairs.
Yutaro's body went rigid.
"……"
He threw off the futon and sat up. His heart seemed to be pounding unnaturally loud. He moved quietly down the hallway, careful not to make the floorboards creak.
As he approached the kitchen, the sound became clearer. Something scraping, something being dragged. Yutaro peered through the gap in the sliding door into the kitchen.
Moonlight fell in a single line across the kitchen floor.
In that light, there was a small shadow.
（What?）
He squinted. It had the shape of a person. But impossibly small. Something that fit in the palm of a hand, yet unmistakably had human contours, was trudging along with a white lump on its back.
（Sugar cubes……?）
The lid of the sugar jar on the shelf beside the sink was slightly open. The small shadow seemed to be carrying sugar cubes out from there. One, two, three—for the amount it was carrying, it was an enormous task.
Yutaro held his breath. His lungs stopped moving, as if he'd forgotten how to breathe.
In that instant, the shadow stopped dead.
It looked at him—or so it seemed. In the moonlight, the small outline wavered slightly.
"……!"
A sound escaped him involuntarily. That was enough.
The shadow dropped the sugar cubes it was carrying and vanished into the darkness at the edge of the kitchen with wind-like speed. Into the gap between wall and floor, into a passage that shouldn't exist, it slipped away.
Yutaro couldn't move for a long time.
He turned on the kitchen light. His hands were shaking.
On the floor, three sugar cubes lay scattered. For something dropped, they were arranged oddly neatly. As if they'd been meant to be placed there from the start.
And beside them, Yutaro found it.
Footprints.
On the dusty floor, tiny, tiny footprints continued. Not a child's feet. Too lifelike for a doll—he could clearly make out the shape of five fingers. Each one was no larger than the tip of his pinky.
"……What the hell is this?"
His voice shook. Less fear than confusion—his mind couldn't catch up to the situation.
Yutaro crouched down and picked up one of the sugar cubes. The grainy texture proved this wasn't a dream.
（Three. Exactly three.）
He remembered. This afternoon, when he'd opened the sugar jar, there had been exactly three sugar cubes in it. He'd assumed someone had forgotten to put them away, or that was all there'd ever been.
But what if this was every night's scene—
What if someone had been carrying away exactly three sugar cubes every night—
Yutaro stared at the footprints for a long time. The small five-fingered marks in the dust might disappear by morning. He thought about taking a photo, but he hadn't brought his phone.
In the end, he didn't sleep that night at all.
When the sky outside the window began to lighten, Yutaro went down to the kitchen again.
The footprints were still there.
It wasn't a dream.
The three sugar cubes were lined up neatly beside the sugar jar. As if someone had put them back where they belonged.
"Something's in this house……"
His whispered words were swallowed by the quiet kitchen and disappeared.
Beyond the persimmon tree, morning birds began to sing. The ridgeline of the Kamuro range slowly revealed its outline in the rising sun. What had his grandmother felt, looking at this view when she was alive?
Yutaro placed one sugar cube in his palm.
Small and fragile. Yet someone clearly needed it.
Who.
For what.
He had no answers. But one thing was certain, almost a premonition.
（Someone else is in this house besides me.）
The long night of a man on leave had only just begun.
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