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Another World with My Rented Girlfriend

steve_little_pen
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Synopsis
Trapped in a fantastical realm, Kiyoshi discovers a volatile magic that weakens him as it strengthens. His rented girlfriend becomes his shield against impending doom, revealing they're humanity's last hope. Amidst a web of secrets, their journey unveils a destiny intertwined with Earth's future.
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Chapter 1 - Calm before the storm

📍 A Meadow That Should Not Exist | Location: Unknown | Time: Unknown

The world smelled of roses and burned sugar.

That was the first wrong thing.

Kiyoshi opened his eyes to darkness thick enough to taste — sweet and cloying, pressing against his tongue like something that had never learned what air was supposed to feel like. His hand moved before his mind did, reaching blindly through the void until his fingers found Sakura's wrist. Her pulse hammered against his fingertips — fast, uneven, alive.

She's afraid, he registered. So am I.

"What—" Her voice cut through the nothing, sharp and cracked at its edges.

Then light.

Sudden. Merciless. Blinding.

They stood in a meadow that should not have existed.

The grass was too green — the kind of green that lived only in paintings by people who had never truly looked at grass. The sky above them hung a deep and impossible violet, cloudless, pressing down like the inside of a held breath. And floating above them — hundreds of them — translucent cards spun slowly in an updraft that came from nowhere, each one catching light from a sun that wasn't there, each one covered in handwritten wishes in scripts Kiyoshi had never seen. Languages that felt older than language. They drifted like autumn leaves that had forgotten how to fall.

Three meters away, something stood watching.

A porcelain doll. The size of a child. Its body too still, its painted smile too wide — a red crescent stretched past where a mouth should end. Its joints clicked once, twice, a dry and deliberate sound, as it turned its painted eyes toward them.

It spoke in a voice like wind chimes and grinding glass.

"Bye-bye," it said. "Become strong."

⟵ THREE HOURS EARLIER ⟶

📍 Kiyoshi's Room | Downtown Tokyo | 9:30 AM | Valentine's Day

The phone buzzed like a dying insect against the nightstand.

Bzz. Bzz. Bzz.

Kiyoshi cracked one eye open. February sunlight fell across his ceiling with the particular cruelty of a morning that expected things from him. He registered three facts in sequence: it was late enough that he should be up, it was Valentine's Day, and he had stayed awake until three in the morning reading about quantum entanglement for reasons that made complete sense at the time.

He pulled the blanket over his head.

The phone buzzed again.

His room told the story of a boy who was very good at things that didn't help him. Science fair trophies lined the shelf in varying heights, catching the light like a miniature skyline. Textbooks rose in precarious towers from the floor, each stack a monument to a sleepless night. A robotics award dangled from his lamp like a forgotten ornament, swaying slightly in the draft from the window he'd left cracked open. The room smelled of old paper and cold coffee.

He finally reached for the phone.

[Takeshi: Dude where are you?? Aiko brought her friend. You're missing out 😭]

He deleted it.

Takeshi's brand of help always arrived in the shape of ambush double-dates — girls who looked at Kiyoshi the way people look at a documentary about an obscure fish. Interesting, perhaps. Not something you'd bring home.

He sat up. Stood. Took two steps toward the bathroom.

And immediately walked into a stack of physics journals.

The floor introduced itself to his knees with unnecessary enthusiasm. He lay there a moment, cheek pressed to the cool wood, staring at the spine of a journal titled Emergent Phenomena in Quantum Systems as though it owed him an apology.

Then he got up, because the floor offered no comfort, and made his way through his morning ritual — washroom, face, clothes selected without any real hope.

Downstairs, the television was already at war with the morning.

"— and today, the KOK shopping mall is THE place to be this Valentine's Day! Couples receive complimentary—"

"Mom," he called, voice still rough with sleep. "Please turn that off."

His mother appeared in the kitchen doorway, spatula in hand, expression already sharpening into the particular brightness she reserved for parental requests.

"Kiyoshi! Perfect timing. I need you to pick up groceries."

He closed his eyes.

Of course.

📍 Downtown Tokyo | 9:50 AM

Twenty minutes later, he stood on a pavement that the city had decided to dedicate entirely to other people's happiness.

Couples moved around him like water around a stone — holding hands, sharing earbuds, leaning into each other with the careless ease of people who had never once had to think about how to be near someone. He stood in his stained grey hoodie, grocery bag in hand, feeling precisely like what he was: a white rose dropped into a field of red. Conspicuous. Misplaced.

His phone buzzed.

[Takeshi: You're missing EVERYTHING. This is your life, man. It's just passing you by.]

Kiyoshi stared at the message longer than he meant to.

Last February, he had confessed to Yumi from Chemistry class. He had prepared for it for two weeks. He had said the words clearly and without stumbling, which he had considered an achievement. Then he had watched her face move through confusion, then a careful pity, and then that worst expression — the one where someone is already planning how to be kind while they decline.

You're a good person, Kiyoshi. It's just—

He put his phone away.

He was popular, in the technical sense of the word. People knew his name. Came to him before exams. Asked him to check their lab reports. Oh, Kiyoshi? The science guy. Kinda weird but smart. Useful. Respected in the abstract. Never quite wanted.

A billboard caught his eye across the street — enormous, gleaming, positioned with the precision of something designed to find him specifically.

RENT A GIRLFRIEND — Your Perfect Valentine's Day. Guaranteed.

He stared at it.

His finger moved before his brain could lodge an objection.

⟵ ONE HOUR LATER ⟶

📍 His Apartment | 11:00 AM

He changed clothes three times.

The website had been clinical about it, the way contracts are clinical — all courtesy and zero warmth. The rules had printed themselves across the back of his eyes while he scrolled.

No excessive physical contact. No personal questions. No expectations of genuine connection. You are purchasing time. Nothing more.

Seventeen profiles. He'd read each one with the careful thoroughness he applied to research papers, which was perhaps the problem. He wasn't looking for data. He didn't know what he was looking for.

Then he found her profile. Sakura. Black hair. Eyes in the photograph that seemed somehow both present and absent at once — looking directly at the camera while looking at something else entirely. Something in him went quiet when he saw that photograph. He didn't examine why.

He arrived at the café early. Stood outside in his least-wrinkled shirt, wearing cologne his grandmother had given him for Christmas three months ago, feeling every bit as absurd as the situation deserved.

Then he saw her.

She moved through the crowd with a kind of careful grace — not the effortless grace of someone unaware of being watched, but the deliberate grace of someone who had decided, consciously, how to move through a world that watched. Black hair cascaded past her shoulders and down to her hips, catching the pale February light. She was a bit taller than he was. When she found him in the crowd, her expression settled into something pleasant and precise — a smile that arrived like a light switched on.

"Kiyoshi?" The smile held perfectly. "I'm Sakura. Your girlfriend for the next three hours."

The word girlfriend landed somewhere in the center of his chest like a stone dropped into still water.

"Hi. Yeah. That's — that's me." He sounded like a machine delivering its own error report.

"You look — I mean — thank you for—" He stopped. Reset. "Where would you like to go?"

She asked him, he realized. The slight wrongness of that.

"Maybe ice cream?"

"Sounds perfect." The smile didn't change.

He reached out, almost without deciding to. "Can I hold your hand?"

Something passed behind her eyes — a brief, genuine thing, there and gone.

"Hands only." Her tone dropped ten degrees with surgical precision.

He withdrew his hand. His face found new temperatures.

Excellent. World-class. Legendary beginning.

📍 The Ice Cream Shop | 12:00 PM

The shop had committed entirely to the occasion. Heart-shaped everything. Red and pink bunting. Small cards on each table with pre-written love quotes for people who found sincerity difficult. Couples at every table fed each other spoonfuls with the unselfconscious joy of people who had forgotten other people existed.

Kiyoshi ordered the Valentine's Special — two spoons, one sundae, manufactured intimacy by design.

"So," he tried. "Do you do this often?"

Her spoon paused over the ice cream. "That's a personal question."

"Right. Sorry." He looked at the sundae. "The ice cream's good."

"It is."

A silence settled between them — not the comfortable kind. He studied the table. She studied the middle distance. Somewhere behind her professional composure, something sad passed through her expression like a cloud across a window, there for a moment, then smoothed away as though it had never arrived.

She's good at this, he thought. But he couldn't decide what this was. Pretending? Or hiding? Were those the same thing?

They finished the sundae with the quiet efficiency of people completing a task. She laughed at the appropriate moments — bright, light sounds that climbed to exactly the right note and went no further. Never quite reaching her eyes.

📍 KOK Mall | 12:30 PM

The mall assaulted every sense with coordinated enthusiasm. Perfume samples. Jewelry displays lit like altars. A couple's photo booth shaped like a giant heart. Somewhere above them, a speaker played a love song from three years ago that Kiyoshi vaguely remembered being popular.

He was mid-thought — something about the economics of manufactured romance — when his brain simply stopped working.

Fifteen meters away, at a jewelry display, stood his parents.

His mother had her hand tucked into the crook of his father's arm. They were laughing at something. They looked — and this detail landed strangely — young. Not older-than-he-remembered young, but genuinely, unfamiliarly young, the way people look when they are happy in a way that has nothing to do with anything except being where they are.

Oh no—

He grabbed Sakura's elbow without a word and steered her behind the nearest pillar with the calm decisiveness of a person having a quiet emergency.

"What—"

"My parents." His voice had climbed an octave without permission. "They cannot see—"

"Kiyoshi?"

His mother materialized beside them with the precision of someone who had developed radar for her son's attempts at evasion over seventeen years.

Her eyebrows rose. Her gaze traveled from him to Sakura.

"Why are you here?" they said simultaneously.

His mother's cheeks colored. "It's Valentine's Day. Your father and I—" She stopped. Looked at Sakura again. Her expression moved through surprise and arrived at something Kiyoshi could only describe as delighted investigation.

"Oh," she said. Then, slowly: "Oh."

"We were just leaving," Kiyoshi announced, already moving.

They ducked into a side corridor. His heart performed several activities it wasn't designed for.

"That was—" Sakura began.

"A disaster," he finished.

He looked up.

She was almost smiling. Not the professional smile — something smaller, involuntary, the kind that happens before a person can arrange their face. It transformed her entirely, the way a window being opened changes the quality of a room.

"Your mother seems nice," she offered.

"She is going to interrogate me for the next several weeks." He paused. "She's never going to let this go."

And somehow, without quite deciding to, he was smiling too.

📍 The Wish Card Shop | 1:00 PM

It was tucked between a bookstore and a watch repair shop, the kind of small place that malls keep like secrets — a hand-painted sign above the door reading: WISH CARDS — Write Your Heart's Desire. In the doorway, a young woman in a maid's uniform held a fan of rainbow-colored cards toward every person who passed.

"Write a wish! The magic of Valentine's Day makes them come true!"

Kiyoshi's mouth was already forming a polite decline.

Sakura stopped walking.

"Let's do it," she said quietly.

"You don't actually believe—"

She was already pressing a card into his hand. "Does it matter?"

He looked at the blank card. Looked at her. She was already moving toward the small writing corner at the back of the shop, and something in her voice — something underneath does it matter — made him follow without another word.

He sat across from her and stared at the blank white card for a long moment.

What do you wish for when you are paying someone to pretend to care?

He uncapped the pen. Wrote seven words.

I wish I fell in love with a girl like Sakura by next year.

He looked up. Sakura was bent over her own card, hair fallen forward like a curtain drawn across her expression. She wrote slowly. Deliberately. With the focus of someone doing something that cost them something. When she finished, she held the card face-down against her chest.

"What did you write?" he asked.

"That," she said, "is between me and the wish card."

Something lived in her voice then. Something that didn't belong to the professional version of her — a small, unguarded weight. The mask, just slightly, in one place, had cracked.

They deposited their cards in the ornate wooden box by the door. The woman in the maid uniform winked.

"Check back next year!"

Kiyoshi checked his phone.

Thirteen minutes left.

"Do you want to—" he began.

The lights went out.

Not gradually. Not like a power failure that gives warning — a flicker, a stutter, a slow surrender. One moment the mall blazed with the full commercial brightness of a hundred overhead lights. The next — nothing. Absolute darkness.

Around them, people gasped. Phone lights clicked on, cutting pale shafts through the black, casting long and unsteady shadows across every face.

But around them — around Kiyoshi and Sakura specifically — the darkness was different.

Heavier. Like something with density. Like something that had been waiting.

"Do you smell that?" Sakura whispered.

He did.

Roses. Rich and sweet and entirely wrong — growing stronger by the second, mixing with something underneath it, something caramelized and scorched. Sugar burned past the point of sweetness. Extinguished matches. The smell of something ending.

"Kiyoshi."

Her hand found his in the dark.

Not professional. Not the careful, contracted touch she had permitted earlier. Her fingers wrapped around his and gripped — tight, real, afraid in a way she was no longer pretending wasn't true.

Music began.

A melody, slow and drowning, like a music box submerged in deep water — the notes arriving warped, stretched, reaching the surface barely intact. It came from everywhere and nowhere, the way sounds do in dreams.

Shapes materialized in the impossible dark. Balloons — dozens of them — drifting toward them from all directions, their surfaces reflecting light that had no source, light that came from within the black itself. On their surfaces: reflected wishes. Reflected cards.

And there — at the far edge of the visible dark — a figure.

Small. Still. Porcelain-white.

The doll's painted eyes found them through the darkness. Found them. Not the space they occupied. Them. Kiyoshi felt the distinction land in the oldest part of his brain, the part that remembered being small and knowing, without reason, that something in the dark was watching.

Its red crescent smile did not move when it spoke.

"How about a picnic?"

SNAP.

The world inverted.

Kiyoshi's stomach lurched as reality folded — gravity reversing, up becoming meaningless — sound dissolving into color, color into sensation, sensation into something that had no name in any language built for human experience.

And then—

Darkness.

Complete. Absolute. Entire.

The last thing he registered, before even that was taken:

Her hand, still holding his.

✦ CODEX ✦

World Archive: Entries Relevant to Chapter One

The following records have been assembled from multiple sources. Accuracy is not guaranteed. The world does not always tell its history kindly.

ENTRY 001 — ON KIYOSHI MORI

Age:17

Location:Tokyo

Hair:Brown

Eyes:Dark brown

Height:160 cm

Build:Lean, good muscle definition

Top of his class. People borrow his work and call it friendship. He knows. He hasn't decided what to do about it yet.

Overanalyzes everything. Introvert. Aware of his shell — slowly, awkwardly trying to break it.

His father is passionate about martial arts and sword play, and passed that training to Kiyoshi. Kiyoshi knows more than he lets on. He has been mocked for it. He pretends this doesn't bother him.

His wish was genuine. This matters more than he knows.

ENTRY 002 — ON SAKURA

(Partially Restricted — she does not tell people things. The rest she keeps herself.)

Age:17

Hair:Black

Eyes:Black

Height:165 cm

Build:Slim but strong

Cold-minded. Very sensitive underneath it — though she does not advertise this.

Fully capable. Does not require saving.

Carries things she does not name. It is hurting her.

The rental arrangement is not who she is. It is what she is doing.

End of Chapter One Codex.