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Let me find my place in your family (ShinoMitsu)

Summary:

Mitsuri Kanroji has just found a new job as a babysitter.

Between taking care of three little girls, trying to understand the quiet sadness that seems to surround the household, and doing her best not to fall under the charm of their chaotic and captivating aunt, Shinobu Kochou, things definitely won’t be easy for her.

🦋🍡

Chapter 1: • Prologue •

Chapter Text

"The directions say it's here."

Mitsuri rolled down the passenger window, lifting one hand to shield her eyes from the relentless sun pouring in from above.

A soft breeze toyed with her pink hair as she leaned forward, her gaze fixed on the sight before her.

The house—no, mansion—sprawled across the landscape like something from a dream. It dwarfed anything the pink-haired girl had ever seen, making the nicest house in her own neighborhood look like a gardener's shed by comparison.

Marble columns flanked the entrance, and arched windows caught the afternoon light, throwing prismatic reflections onto the perfectly manicured lawn.

In the center of the circular driveway, visible through the massive electric gate where Iguro's car had idled for the past minute, a three-tiered fountain cascaded crystal-clear water into a koi pond below.

Mitsuri's lips parted slightly. Who actually lives like this?

"I think you have to ring the bell," Iguro said flatly, breaking her reverie. He didn't bother pointing this time—just lifted his chin toward the intercom mounted on the gate's stone pillar.

A small black box with a single red button, deceptively unremarkable for something that guarded a palace.

"Oh! You're right."

Mitsuri leaned across the center console, her shoulder brushing against Iguro's as she stretched her arm out the window. Her fingertip found the button and pressed.

A soft electronic chirp answered from the speaker.

She pulled back into her seat and turned to her best friend, her face breaking into a brilliant smile.

Iguro's eyes narrowed behind his sunglasses.

"Why are you so happy?" He reclined slightly, letting his head rest against the seat, though his hand never left the steering wheel. His thumb tapped a slow rhythm against the leather. "Nothing good comes from families with that kind of money." He tilted his head toward the mansion.

"Actually, it's kind of suspicious. With wealth like that, you'd think they'd have at least three maids falling over themselves at the gate. But no—just us, baking in the sun, waiting for someone to remember we exist."

Mitsuri laughed and punched his shoulder—light, playful, but with enough force to rock him slightly in his seat.

"Iguro, don't be like that!" Her voice bubbled with warmth. "Besides, you're the one who recommended me for this job. If it's so suspicious, why'd you send me here?"

Iguro shrugged, a minimal lift of his shoulders.

"Sanemi said he knew someone who needed help. Didn't specify who you'd be looking after, though." He reached up and adjusted the black mask covering the lower half of his face, a habitual gesture she'd seen a thousand times. 

Mitsuri tilted her head, undeterred.

"How bad could it be? Looking after three little girls?" She flashed him another smile, this one softer, more thoughtful.

Iguro opened his mouth to respond—

CRACKLE.

Static erupted from the intercom speaker, sharp and sudden. Both of them turned toward the sound.

"Hello?" A child's voice—high, young, cautious—filtered through the tinny speaker.

Mitsuri's eyebrows shot upward.

She scrambled to lean out the window again, pressing closer to the device. "Hi! I'm Mitsuri Kanroji! The new babysitter!" She pitched her voice to carry, friendly and warm.

A pause. Then:

"No, thank you."

The speaker went dead.

Mitsuri blinked. "What—"

Another voice followed, so faint and delicate she had to strain to catch it.

The words slipped through the static like silk through fingers: soft, almost inaudible, carrying a weight that made Mitsuri lean impossibly closer, her ear nearly touching the speaker grille.

"I... don't... want..." was all she could piece together before the voice faded.

"Hello...?" Mitsuri tried again, uncertainty creeping into her tone.

A third voice cut through—masculine, authoritative, slightly muffled as if calling from a distance.

"Aoi, Kanao, put that phone down right now!"

Mitsuri pulled back, her fingers finding each other in her lap, twisting nervously. She glanced at Iguro, who raised a single eyebrow but said nothing.

More static. Muffled voices arguing. The scuffle of what sounded like small feet on hardwood.

Then, breathless and flustered: "Hello? I'm so, so sorry, Miss Kanroji! Please forgive me—I'm opening the gate right now. Just one moment!"

A mechanical hum started somewhere beyond the fence. The massive iron gates began to swing inward, slow and deliberate.

Mitsuri released a breath she hadn't realized she'd been holding. Beside her, Iguro's hand finally moved from the steering wheel to the gear shift.

"Well," he said dryly, putting the car in motion, "at least they didn't shoot us."

Mitsuri shot him a look. "Iguro."

He didn't smile, but something softened behind his eyes. "I'll wait until you're inside. Just in case you need a quick escape."

The car rolled forward, tires crunching over pristine gravel, carrying them toward the fountain—and whatever waited beyond.

__________

Iguro's car crept forward like a vessel approaching a distant shore, the gravel beneath its tires whispering with each slow revolution.

The fountain at the center of the rotunda came alive as they drew nearer—water arcing from three tiers in graceful streams, catching the afternoon light and scattering it into a thousand liquid diamonds.

Koi fish the color of autumn leaves drifted beneath the surface, their fins trailing like silk ribbons in the current.

The car eased to a stop. For a moment, neither of them moved.

Through the windshield, the mansion rose before them like something from a forgotten era.

Its double doors stood tall and imposing, carved from dark wood and framed by wrought iron lanterns that would flicker to life at dusk.

Ivy climbed discreetly along one corner, softening the stone's stern elegance.

And there, standing before those doors, was a man.

He was young—maybe mid-twenties—with dark hair neatly combed and eyes that darted to his wristwatch with visible impatience.

In his arms, bundled in a pale pink blanket, a baby slept peacefully, her tiny face turned inward against his chest.

One of his hands supported her head with the practiced care of someone who had done this many times before.

When his gaze lifted and caught sight of Mitsuri emerging from the car, his entire posture shifted. The tension in his shoulders eased. A smile replaced his furrowed brow, and he raised his free hand in a warm greeting.

Mitsuri stepped out into the sunlight, the car door closing behind her with a solid thunk.

For a heartbeat, she simply stood there, drinking in the scene—the fountain's gentle music, the scent of freshly cut grass, the weight of the mansion's gaze upon her.

Then she smoothed her skirt, hitched her handbag higher on her shoulder, and walked forward.

"Miss Kanroji!" The young man's voice carried across the drive, warm and relieved. "What a pleasure to finally meet you. I'm Kumeno Masachika—we spoke on the phone last week."

By the time Mitsuri reached him, her hand was already extended. "The pleasure's mine, Mr. Kumeno! Thank you so much for this opportunity."

Their handshake was brief but sincere.

Behind her, Mitsuri heard Iguro's engine rumble to life. She glanced back just in time to see him raise two fingers from the steering wheel—a silent salute—before his car pulled away, gravel spitting in its wake. 

Masachika followed her gaze, then returned to her with an apologetic wince.

"I'm terribly sorry, but I won't be able to give you a proper tour of the house." His hand came up to rub the back of his neck, a gesture of genuine embarrassment. "My schedule was changed unexpectedly last night, and I couldn't find a way to reach you in time. Please forgive the inconvenience."

Mitsuri's response was immediate—a warm, easy smile and both hands rising to wave away his concern like someone swatting at harmless butterflies.

"Oh, please don't worry about that at all! These things happen. If something comes up, just call me, and I'll do my best to come earlier next time!"

Something in Masachika's expression softened—relief, perhaps, or gratitude for her understanding.

"You're very kind. Truly." He looked down at the bundle in his arms, and his whole face transformed. The formality melted away, replaced by something tender and achingly gentle. "And this little one—this is Kiyo."

Mitsuri leaned in, her breath catching.

The baby couldn't have been more than a few months old.

Dark lashes rested against rounded cheeks, fluttering occasionally with whatever dreams occupied an infant's mind.

One tiny fist had escaped the blanket's confines, fingers curled like the petals of a closed flower.

A soft pink cap covered her head, and from beneath it, the faintest wisps of dark hair peeked out.

"Oh," Mitsuri breathed, the word escaping before she could stop it. "Oh, she's beautiful."

Her voice had dropped to barely a whisper, instinct taking over.

Some things transcended language—the universal understanding that sleeping babies required silence, required reverence.

Masachika's smile turned wistful. "She's a good baby. Sleeps through almost anything, eats well, rarely cries." He brushed the back of one finger against Kiyo's cheek, feather-light. "The older two..." He trailed off, his expression shifting.

Mitsuri straightened, attentive.

"Aoi and Kanao are inside. In their rooms." He paused, choosing his words with care. "They're... adjusting. To the new situation. It's been difficult for them." His voice dropped, melancholy creeping in at the edges.

"They're a little resistant to this change. Please be patient with them."

Before Mitsuri could respond, Masachika glanced at his watch again—this time with genuine alarm. "I'm so sorry, I truly hate to rush, but I need to leave this instant. I'm already late."

He looked at Kiyo. Looked at Mitsuri.

She didn't wait for him to ask.

Her arms opened, steady and sure, and Masachika transferred the sleeping baby with the careful precision of someone handling spun glass.

Kiyo's warmth seeped through Mitsuri's blouse immediately—small, impossibly light, yet somehow anchoring her to the spot.

For a moment, Mitsuri forgot to breathe.

The baby's scent drifted up to her—baby powder and something soft, like laundry dried in sunlight.

The tiny fist twitched, then stilled. One eyelid fluttered but didn't open.

Oh no, Mitsuri thought, her heart doing something complicated in her chest.

Oh no, she's too adorable.

This is dangerous. I'm going to perish.

Mitsuri found herself momentarily captivated by the tiny life in her arms—the impossible lightness of her, the rhythmic puff of breath against her collarbone, the way Kiyo's fingers curled and uncurled in sleep like a kitten dreaming of chasing mice.

She'd almost forgotten the world existed outside this small, perfect moment.

"—and Shinobu will arrive around six after work. She has a key and the gate code, so don't worry if you hear it opening around six-thirty or so."

Mitsuri's head snapped up, guilt flickering across her features.

Masachika was already halfway to his car, walking backward as he fired off instructions like a general before battle.

Shinobu, Mitsuri repeated internally, clutching the name before it could escape.

Six o'clock. Shinobu at six. Got it. I think.

She nodded vigorously, hoping it conveyed more confidence than she felt.

"Kanao's lunch specifications are on the refrigerator—stuck to the door with a magnet! Oh, and whatever you do, don't let Aoi anywhere near the kitchen! Kiyo's already been fed, but there's prepared formula in the fridge—you just need to warm it up, not too hot, test it on your wrist—"

The words tumbled out of him like water from a breached dam.

Some of it Mitsuri already knew from their phone conversation, but she listened anyway, watching the way his hands moved as he spoke, the worry creasing his brow.

This was a man who loved his children.

A man who hated leaving them.

"Please don't worry, Mr. Kumeno!" Mitsuri called out, shifting Kiyo slightly to free one hand for a reassuring wave. "I'll take excellent care of your daughters!"

Masachika paused with his hand on the car door.

For a moment, his expression cracked open—gratitude, worry, hope, all tangled together. He managed a small smile.

"Thank you, Miss Kanroji. Truly."

Then he slid into the driver's seat, and within seconds, the car was reversing, turning, and disappearing down the long driveway.

A plume of dust rose in its wake, hanging briefly in the air like smoke before dissipating into nothing.

Mitsuri stood there, alone with the sleeping baby and the singing fountain, watching until the last trace of him vanished beyond the gate.

She looked down at Kiyo.

Kiyo remained blissfully unaware of being left in a stranger's arms.

"Just you and me now, huh?" Mitsuri whispered, brushing the back of one finger against the baby's impossibly soft cheek.

The skin was warm, smooth, perfect. "And your sisters, apparently. Somewhere inside that enormous house."

The mansion loomed behind her, its windows dark and unreadable.

Mitsuri took a breath, adjusted her grip on Kiyo, and walked toward the doors.

_________

The entry hall swallowed her whole.

The moment the massive door closed behind her with a soft, expensive thump, the outside world ceased to exist.

The fountain's murmur vanished.

The breeze through her hair vanished.

Even the distant sound of traffic from beyond the gate seemed to belong to another dimension entirely.

Silence.

Not the comfortable silence of an empty house, but something deeper. Heavier.

The kind of silence that had weight, that pressed against the ears and made footsteps seem like intrusions.

Mitsuri stood perfectly still for a moment, letting her eyes adjust to the dimmer light.

The entryway opened into a corridor that stretched forward like a throat swallowing the house whole. Polished hardwood floors gleamed underfoot.

A crystal chandelier hung overhead, its prisms catching thin slivers of light from windows somewhere deeper in the house.

The air smelled faintly of lemon polish and something floral—lilies, maybe, or jasmine.

No television. No laughter. No pounding feet of children playing.

Not even a bird singing outside.

Okay, Mitsuri thought, shifting Kiyo's weight in her arms. Okay. This is fine. Big houses are always quiet. It's normal.

She started walking.

The corridor opened onto a longer hallway lined with doors—closed, all of them—and her gaze drifted to the walls.

Photographs.

Dozens of them, arranged in careful clusters, their silver and black frames catching what little light filtered through curtained windows.

Mitsuri slowed, then stopped entirely.

The first photo showed two girls—young, maybe six and eight—sitting on a picnic blanket in what looked like this very backyard.

The smaller one had dark hair and a gap-toothed smile so wide it crinkled her eyes shut.

The older one held up a sandwich triumphantly, mustard smeared on her cheek, laughing at whoever held the camera.

Aoi and Kanao?

Mitsuri guessed. Has to be.

She moved to the next photo. And the next.

More girls, older now. A girl at what looked like a school play, dressed as a flower, beaming with pride.

Other blowing out birthday candles, seven of them flickering, her face illuminated by their glow.

Both of them in swimsuits at the beach, building sandcastles, chasing waves.

But in nearly every photo, they weren't alone.

Two women appeared again and again—both with dark hair and striking pale eyes that seemed to glow even in printed form.

One had a sharper face, a more serious expression that softened only when she looked at the girls.

The other was softer, rounder, always smiling, always touching someone—a hand on a shoulder, an arm around a waist, fingers brushing hair from a child's face.

Masachika appeared too, usually on the edges, usually holding the camera or pulling silly faces to make the girls laugh.

And in the more recent photos—

Mitsuri leaned closer.

One of the women—the softer one—was visibly pregnant in several pictures.

Her hand rested on her swollen belly in that unconscious way pregnant women did, protective and wonderstruck.

In the last photo of her, she stood in a garden—this garden—with Masachika's arms wrapped around her from behind, both of them gazing down at her belly with expressions of pure, radiant joy.

Mitsuri's breath caught.

Kiyo.

She looked down at the baby in her arms, still sleeping peacefully, utterly unaware that her mother's face existed only in photographs now.

The hallway stretched on, more photos waiting.

____________

The gleaming white floor tiles sparkled like scattered stars beneath Mitsuri's feet, each step sending faint echoes through the cavernous space.

Only when she stepped fully into the main living area did she truly grasp the mansion's interior opulence—every surface, every corner, every carefully chosen detail whispered of wealth that went far beyond the grand facade outside.

A massive television dominated one wall, its screen dark and reflective, easily spanning—what, sixty? Seventy inches? It faced a constellation of seating: three distinct sofas arranged in a gentle crescent, each upholstered in soft pastels that somehow complemented one another without clashing.

A blush pink sectional sprawled along the far wall. A mint green loveseat sat angled toward the windows. And nestled between them, a cream-colored chaise lounge invited afternoon naps and lazy reading.

Two small armchairs—clearly sized for children—flanked the larger furniture, their cushions still bearing the faint indentations of small bodies. And tucked near the kitchen entrance, a high chair stood at attention, its safety straps dangling like loose ribbons, waiting for Kiyo to grow into it.

A low coffee table sat at the heart of the arrangement, its surface uncluttered save for a stack of children's books with worn spines and a single ceramic bowl holding polished stones that caught the light.

The table was small, modest, almost humble—yet somehow it anchored the entire room, making the soaring ceilings and sprawling layout feel less like a museum and more like somewhere people actually lived.

Beyond the living area, a wide archway framed the kitchen like a painting. Mitsuri's breath caught slightly.

The kitchen stretched deep into the house, all marble countertops and custom cabinetry in warm cream, a massive refrigerator standing against the far wall like a sleek sentinel.

Copper pots hung from a ceiling rack, gleaming dully in the afternoon light.

A central island dominated the space, its surface clear and waiting.

"Oh!" Mitsuri's voice came out in a soft exclamation, her earlier distraction snapping into focus. "Kanao's lunch instructions—they must be around here somewhere."

She adjusted Kiyo in her arms, settling the sleeping baby more securely against her chest. The baby's warmth seeped through her blouse, her little body rising and falling with each soft breath.

Don't wake up, don't wake up, Mitsuri thought as she stepped carefully across the threshold into the kitchen, her shoes making the faintest of sounds against the immaculate floor.

The refrigerator stood before her, its stainless steel surface cool and pristine. She could see her own reflection in it—pink hair, wide eyes, a bundle of pale pink blanket cradled against her—and behind her, the archway she'd just passed through, the living room beyond, the—

Mitsuri's steps slowed.

Her reflection wasn't alone.

Two small figures stood in the archway behind her, caught in the kitchen's entrance like deer at the edge of a clearing. Mitsuri's hand tightened instinctively around Kiyo as she turned, her heart performing a small, startled leap in her chest.

One girl. Then another.

They hadn't made a sound. Not a footstep, not a whisper, not even the rustle of clothing.

They simply appeared, as if they'd materialized from the shadows between one breath and the next.

The first—the one standing slightly forward, chin lifted, shoulders squared—had dark hair cut in a sharp bob that framed a face set in careful, unreadable lines.

Her eyes were wide and dark, fixed on Mitsuri with an intensity that made the girl's smile flicker uncertainly on her lips. One hand rested on the archway frame; the other hung at her side, fingers curled into a loose fist.

That must be Aoi, Mitsuri thought, remembering Masachika's hurried warning. The one I'm not supposed to let in the kitchen.

The other twin stood slightly behind, half-hidden by her sister's shoulder, but there was nothing timid in her stillness. Her hair was longer, pulled back with a simple clip that let dark strands frame her face in soft curves rather than sharp lines.

And her eyes—her eyes were different. Pale. Almost luminous. Where Aoi's gaze was a weight, Kanao's was a mirror: she watched without revealing, studied without reacting.

Those pale eyes fixed on Kiyo first, lingering on the sleeping baby with an expression Mitsuri couldn't quite name, something between longing and wariness.

Then they lifted to Mitsuri's face, held there for a long, unblinking moment, and drifted away as if already bored.

Kanao.

Neither girl spoke.

Neither girl moved.

The kitchen's silence pressed in around them, broken only by the soft, rhythmic breathing of the baby in Mitsuri's arms. The refrigerator hummed somewhere behind her. A clock ticked somewhere deeper in the house.

Mitsuri felt the weight of their gaze like a physical thing. 

She offered her warmest smile, the one that usually made children melt like butter in a warm pan.

"Hello," she said softly, keeping her voice low for Kiyo's sake but pitching it to carry. "You must be Aoi and Kanao. I'm Mitsuri. Your new babysitter ."

Aoi's expression didn't change. Her hand remained on the archway, her body a deliberate barrier between Mitsuri and her sister. Her dark eyes narrowed almost imperceptibly, cataloging and finding no reason yet to trust.

Kanao blinked once, slowly, like a cat deciding whether to acknowledge a person's existence. Her pale eyes drifted back to Kiyo's sleeping face, and for just a moment—something soft passed through her expression.

Then it was gone, smoothed over like a stone skipped across water, and she looked away.

Neither said a word.

Mitsuri shifted her weight slightly, Kiyo's warmth a comfort against her chest. Behind her, the refrigerator hummed its low, patient song. Somewhere in the house, a clock ticked on.

Well, she thought, her smile not wavering even as the silence stretched thin, this is going well.