(A/N: Big Chapter 3500 words)
*****
A rusty watering can sat abandoned by the porch steps, its spout bent awkwardly. Reddish-brown flakes crumbled onto the damp concrete beneath it. Inside the kitchen, Mikan sliced tomatoes with rhythmic thunks, her brow furrowed slightly as steam rose from the frying pan beside her. She wiped her hands on her apron.
"Lala-san," Mikan called out, not looking up from her cutting board. "Go wake Rito, please. Breakfast is almost ready."
Lala tilted her head. "Rito is still sleeping?" She shuffled toward the hallway, her fluffy pink hair bouncing. Mikan sighed softly. "Yes, wake him up properly this time."
…
The hallway smelled faintly of old wood and dust motes danced in the morning light filtering through the curtains. Lala paused outside Rito's door, her fingertip tracing the grain of the wood. She pushed it open silently. Rito lay sprawled on his bed, blankets tangled around his waist. His chest rose and fell steadily. Lala crept closer, her curiosity prickling like static.
She climbed onto the bed, careful not to jostle the mattress. Her gaze fixed on the tented fabric of Rito's shorts. She'd seen it and felt it before, stiff and mysterious beneath the cloth, still it wasn't enough to satisfy her curiosity. Slowly, she pressed her palm against the bulge. It felt warm and firm through the thin cotton. Her fingers curled experimentally.
Footsteps padded softly down the hallway. Sachie peeked into the room, blinking sleep from her eyes. "Mikan sent me too," she whispered. "Is he awake?" The she saw where Lala's hand moving, and without a word, she climbed onto the bed beside her, leaning in. Mami appeared in the doorway next, rubbing her eyes. "What's taking so—" She froze, watching them. Then she crawled onto the mattress, joining the silent circle, but not before slowly shutting the door behind her. Three pairs of hands now hovered over Rito's shorts, exploring the shape with gentle, tentative touches. Lala even started using her tail, and Sachie and Mami's hand started roaming.
And just then, Rito stirred. His eyelids fluttered open. Blurry shapes resolved above him—Lala's pink hair, Sachie's wide eyes, Mami's parted lips. His gaze dropped lower. "Huh?" he mumbled groggily. "What are you—"
His voice caught as he registered the hands and tail on his crotch.
…
Friday morning detonated like a triple supernova.
Rito woke buried under a pile of soft bodies and one very insistent tail.
Lala had climbed into his bed again; tail wrapped tight around his full-fledged morning wood, squeezing in slow, sleepy pulses. Sachie's small hand rested on his stomach, fingers curled just above the waistband. Mami's palm lay flat on his chest, thumb brushing his nipple.
Lala's large green eyes blinked open.
"Rito~ ♡" she whispered, tail giving a deliberate tug.
Throb-Throb.
"Today I will surely be studying Earth tail-docking~ ♡"
Rito's blush hit nuclear.
"Nngh…!"
Sachie stirred, sleepy voice dripping honey.
"I volunteer for research~ ♡"
Her hand slid lower, fingers curling around the base through fabric.
Twitch.
Mami's eyes fluttered open, cheeks crimson.
"I-If Sachie joins t-then… m-me too…" Her palm slipped under the blanket, joining Lala's tail in a shy squeeze.
Throb-Throb.
His dick pulsed, pre-cum pearling warm against fabric.
Bang!
The bedroom door slammed open.
Mikan stood framed in the doorway, giant basting spoon in hand like a war hammer.
Veins popping on her forehead.
"THIS IS MY HOUSE AND NO DOING PERVERTED THINGS FIRST IN THE MORNING!!" She brandished the spoon like a sword. "NOW COME DOWN FOR BREAKFAST!"
Lala's tail trembled, pleasure shock making her squeak.
"Ahn~ ♡. Angry Mikan-chan is scary~"
…
"Octopi."
Rito mumbled the word aloud as he stumbled over a sidewalk crack. Lala's fingers tightened instantly around his wrist, her grip surprisingly strong despite her delicate frame.
"Why did you say that suddenly?"
She tilted her head, her green eyes wide with genuine curiosity. Her breath tickled his ear, warm and way too close.
He flinched, nearly tripping again.
"N-no reason! Just thinking about..."
'About how your tentacle-like hugs and colourful experiments always end with me face-first in someone's skirt or breast.'
He swallowed hard, cheeks burning. Lala hummed happily, oblivious, pressing herself against his arm as they walked toward school. Her uniform fabric rustled softly against his sleeve.
The gate loomed ahead. Rito braced himself.
'Inhale. Exhale. Don't panic.'
Just as he stepped onto campus grounds, Lala squealed and yanked him sideways—hard. His foot caught on nothing but air. Momentum slammed him forward. Knees scraped pavement. His flailing hand met something impossibly smooth and warm beneath pleated fabric.
A sharp gasp echoed above him. Rito froze, eyes glued to Yui's furious glare, her thigh taut beneath his trembling palm. Her nostrils flared.
"SHAMELESS! "
The shout tore through the courtyard. Behind her, Haruna's pen almost snapped.
Rito scrambled backwards, palms stinging from gravel burns. "I-I'm sorry, Kotegawa! Lala pulled me—"
But Lala was already giggling, oblivious, patting his shoulder. "Rito fell! But he caught something soft!"
Yui's face crimsoned.
'Who knows, she might really kill me any of these days.' Rito thought, almost tasting copper.
Across the fray, Haruna stared at Lala's hand still possessively wrapped around Rito's forearm.
'Why her?'
The whisper coiled in her mind, almost instinctive and unfamiliar.
'No, don't think about that.'
The bell clanged.
Everyone went towards their classes as homeroom would start soon.
…
As soon as they entered the building, Lala took out her inventions. Her Tail-Tail-don backfired in the hallway; tail whipped out, coiling around Rito's waist and yanking him into her chest.
Unable to supress himself, Rito grabbed her tail.
"AHHN~ ♡ Rito touched my tail~ ♡"
Yui's voice cracked.
"SHAMELESS ACTS WITH ALIEN PHYSIOLOGY!"
Haruna's gaze deepened with a little amount of sadness.
'They're so open… I wish I could be that brave…'
…
Rito barely made it home with Lala.
Sachie and Mami were already waiting in his room, "research notebook" open on the bed.
Mami held a pink ribbon like a measuring tape.
Sachie's sleepy eyes sparkled.
"Onii-san~ ♡. We want to measure it~ ♡"
Mami "accidentally" tripped; ribbon looped around the crotch.
The sudden pressure combined with what happened last day and that day morning, made it swell to a full-blown hard on in one heartbeat.
Throb-Throb!
"9 inches exactly~" she whispered, fingers lingering.
Sachie leaned in, breath warm against his ear.
"Can we see it without clothes, pretty please~? It's purely scientific curiosity."
Rito's blush hit critical.
'Lala is still curious and confused about these things... but these two… They know exactly what they are doing… and still, are just jumping straight into it.'
Mikan appeared in the doorway with a death-glare.
"Rito, wait in the living room until Lala-san is done with her bath, and then you go for bath."
Sachie and Mami suddenly stiffened and Rito immediately darting towards the living room, too embarrassed by the fact of getting caught by his sister with her friends like that.
…
After Rito was done with his bath, Lala called him along with Sachie and Mami to her temporary room. Mikan was preparing for dinner, so Lala planned to show her later.
The guest room door slid shut with a soft click.
Lala clapped her hands.
"Welcome to my temporary bedroom plus research lab~"
The walls shimmered; violet Mood-Light-don stars twinkled overhead; every surface now padded with floating cushions.
Lala held up a tiny silver cube.
"This is my brand-new invention! Just finished it this afternoon!"
Holo-Mirror-don: Activated.
The cube exploded into hundreds of floating mirrors, each one crystal-clear, rotating slowly around the room.
360° view. Every angle. No escape.
Just as they were marvelling at the sight, he heard Lala's innocent explanation.
"Oh, there is a "minor" detail I should mention. Holo-Mirror-don needs perfect light refraction for 360° viewing."
"Fabric blocks 17 % of surface data, so Peke auto-dissolves all clothing on activation!"
"That's not minor!"
As soon as Lala's explanation about the "minor" detail finished, Rito's clothes dissolved in golden sparkles amid his complaints.
Peke: "Peke confirms clothing interference eliminated. Research accuracy: 100 %."
His 6-inch soft length hung free, curved head relaxed.
The mirrors caught it from front, back, side, above, below, every vein visible in perfect detail.
Sachie's eyes went heart-shaped.
"Onii-san's royal scepter (heard from Peke) in the flesh! Please, please, please! Let me hold it~ ♡"
Though she requested, her actions didn't wait for approval. She drifted forward; small hands wrapping his soft dick.
Squish.
Throb!
It immediately swelled to 7 inches, his thick vein pulsing under her palms.
The mirrors magnified every twitch.
Mami pretended to help, fingers joining from behind.
Twitch-Twitch.
His arousal increased and his dick went from 7 to 8 inches, curved head flushing warm rose.
Lala's tail also trembled in front of him as she watched the reflections.
Rito wnable to hold back, squeezed the sensitive tip.
"AHHN~ ♡ Rito there~ ♡"
Her legs buckled, tail curling tight, whole-body shuddering in a dozen mirrors at once.
Pre-cum pearls dripped from Rito's dick in slow-motion.
Sachie caught one on her tongue.
Slurp.
"Love candy~ ♡"
Mami's turn, a shy lick.
Shlick.
"Tastes like pudding…"
Watching their actions, his dick surged to full 9 inches, in all its glory, the curved head flushing deep rose, thick vein jumping under four small hands.
Throb-Throb-Throb!
Every mirror showed a different angle of the 9-inch perfection.
Lala floated closer, large green eyes sparkling in every reflection.
"Earth tail-docking needs skin contact~ ♡"
She guided Rito's hands to her bare breast; soft, perfect weight filling his palms.
Squeeze.
The mirrors caught every fingertip.
Rito's dick jerked, pre-cum pearling faster.
Sachie's grip tightened.
Mami's fingers curled, giving it another full squeeze.
Twitch-Twitch.
Rito's moan slipped out.
"Nngh…!"
Peke floated overhead, swirl eyes spinning.
"Peke registers 360-degree royal scepter view. Research successful."
Suddenly voice came from outside followed by the door sliding open.
"Guys! What are you doing, I have been calling you for-"
Mikan suddenly frozen, basting spoon in hand.
"WHAT ARE YOU GUYS DOING?!"
'Naked… mirrors… touching him… bare… This is MY house… MY brother…'
Rito's blush hit critical, his dick still throbbing in three pair of hands, reflected infinitely.
He opened his mouth; voice cracked like always.
"M-Mikan… it's; i-it's not what it looks, I mean, Lala said it's for, uh…"
He rubbed the back of his neck, eyes darting everywhere except her glare.
"I-I didn't mean for it to go this far…!"
Mikan's spoon trembled harder.
"Leave it! Come down for dinner!"
Peke floated overhead.
"Peke registers Husband-dono panic level: maximum."
'This level of panic is nothing…'
'I used to panic a whole lot more and run,' Rito thought, heart racing. 'and apologize a thousand times. But now… I can accept all of them…'
…
Dining Room.
"Pass the soy sauce, Mikan?" Sachie's fingers brushed Rito's as she reached across the table.
The steaming bowls of miso soup sat untouched for a moment. Steam curled toward the low-hanging lamp, casting shifting shadows over Mami's flushed cheeks. She kept her gaze fixed on her lap, twisting a frayed thread on her skirt. Across from her, Lala shifted on her cushion, the fabric whispering against her bare thighs. Her tail coiled loosely around Rito's ankle beneath the low table—a reflexive, possessive gesture. He froze mid-bite, chopsticks hovering over his grilled mackerel.
"AHEM."
Mikan cleared her throat sharply, the sound startlingly loud. She nudged the soy bottle toward Sachie with too much force, making it clatter.
"Here. Don't spill it this time."
Her voice cracked slightly. She'd been avoiding eye contact since they sat down, focusing intensely on arranging her pickled radishes into neat rows. The air tasted thick with salt and unspoken tension, heavy as the humidity clinging to the windows.
Rito's knee accidentally bumped Lala's under the table. She giggled, high-pitched and nervous, while Sachie's spoon clanged loudly against her bowl. "So," Mami blurted out suddenly, "who picked tonight's movie?" Her hands trembled as she smoothed her napkin, creasing it into sharp, precise folds.
Mikan snatched a pickled radish slice. The vinegar bite sharpened her voice. "Rom-coms are stupid." She crunched down hard, not looking at anyone. Across the table, Lala's tail gave Rito's ankle a slow, deliberate squeeze. His chopsticks slipped, scattering grains of rice.
Steam rose lazily from untouched bowls, carrying the damp-earth scent of miso and the sweetness of grilled fish. Beneath it, though, something else coiled—the faint, lingering musk of Sachie's perfume mixed with Lala's electric-spark skin. Rito shifted his weight. His foot brushed against Lala's bare calf. She inhaled sharply; a tiny sound lost beneath the rattle of Mikan setting down her glass too hard.
Mami stood abruptly. Her chair scraped the tatami. "I'll clear the dishes." she announced, voice tight. She reached for Sachie's bowl just as Sachie leaned forward. Their fingers tangled briefly over the porcelain rim. Sachie pulled back as if burned. Mami grabbed the bowl too quickly — hot broth splashed onto the tablecloth, blooming dark and wet. Silence crashed down, thick and suffocating, broken only by the slow drip onto the floorboards below.
Lala tilted her head. "Your heartbeats sound funny," she murmured, her tail tightening its spiral around Rito's ankle. Beneath the table, her bare foot nudged his shin. He jerked away, knocking his knee against Mikan's thigh. Mikan slammed her palms flat on the table.
"Stop fidgeting!" she snapped, cheeks flushing crimson. Her eyes flickered to Sachie's damp knuckles, then darted away.
Sachie dabbed at the spill with her napkin, pressing hard. The stain spread anyway, soaking through the linen. She could smell the miso's fermented tang mingling with the sharp citrus of Lala's hair—and beneath it, the salt-sweat scent clinging to Rito from their earlier scramble.
…
The rom-com credits rolled under violet starlight.
Everyone stretched, yawning.
Sachie and Mami turned to Mikan with puppy eyes.
"Mikan! Can we sleep with Lala-san tonight?" Sachie pleaded. "We came to see alien princess, remember?"
Mami nodded vigorously.
Lala beamed, tail swish.
"Yay! I also want to sleep with new friends~!"
Mikan narrowed her eyes; something was definitely off.
But in the end, she just sighed.
"Fine. Just… behave."
She retreated to her room alone.
…
Silence pooled thickly through the house after midnight.
Three shadows peeled away from the guest room doorway, bare feet and floating steps muffled on wooden floors. Lala drifted ahead, luminous eyes fixed on Rito's bedroom door handle. Her whisper cut the dark like shattered glass.
"Data acquisition requires proximity parameters~"
Sachie's breath hitched, her palm tightening around her notebook. Mami's tongue darted out to wet suddenly dry lips.
Inside the room, Rito twisted against damp sheets. A dream-image scorched his mind: Lala's tail tip tracing his inner thigh, violet light pulsing with each heartbeat. His hips arched involuntarily, straining the thin fabric tented obscenely over his erection. A low groan escaped him—part frustration, part craving. The memories weren't just whispers anymore; they were molten hooks deep in his gut. 'More.' they hissed.
CREAK.
The door creaked wider. Moonlight sliced across the bed, illuminating the urgent curve beneath Rito's shorts.
Lala floated in first, large green eyes sparkling, whispering with a mischievous tone.
"Rito~ ♡ We couldn't sleep~"
Sachie and Mami followed, cheeks pink, the "research notebook" clutched like a holy relic.
Lala chirped, ever-literal.
"After all, science requires hands-on data~"
…
Rito stirred in his sleep, lost in his lewd fantasies that have started recently turning him perpetually horny. After he received those memories, though Rito still remained himself, his sexual appetite had increased more than ever. Though embarrassed at most times, he now had come terms with what he truly desired.
The things happening in the past few days were already proof enough. If it was the old him, he would have bled out of his nose and fainted out of embarrassment or simply ran away at the first possible chance.
If it was the old him, he would have apologized thousands of times every time, for every single thing, but not now. He simply accepts as much as he could, even it embarrasses him, even it makes him feel like his heart might jump out from his mouth because of the situation.
...
Meanwhile, Lala floated closer to him, her breath ghosting hot over the damp fabric. "Let's start!"
Her tail snaked out, hooked a loose thread—and yanked. The shorts slid down in one fluid motion. Rito's cock sprang free, flushed deep rose and rigid against his stomach, a thick vein throbbing visibly.
"It's so pretty up close~ ♡"
She tilted her head. "And it's already warm and hard!"
Sachie gasped. "Oh! It's... shimmering." Her fingertip hovered, trembling, above the swollen shaft.
Mami's notebook fell open with a soft thump, her blush exploding crimson.
"I-I'm just helping by documenting the texture!" she blurted, eyes wide. Before logic could intervene, she leaned in. Her tongue darted—a quick, nervous flick against the glistening tip.
Shlick.
Her eyes snapped shut. "Salty-sweet," she breathed, shuddering.
"...and addicting."
Lala's tail coiled possessively around Rito's thigh, its luminous tip already glowing violet against his sweat-slicked skin.
Down the hall, Mikan, who gone come to the kitchen to drink water furrowed her brows at the choked-off whimper escaping Sachie's throat.
Rito's eyelids fluttered, confusion warring with raw, dream-spun arousal. He registered the hot press of Sachie's fingertip finally brushing the underside of his shaft—a feather-light touch that sent violent shivers up his spine. Lala's voice sounded. "Excellent vascular engorgement! Comparable to Devilukean pulsar cores!" she announced cheerfully, completely oblivious to Mami's second, deeper, experimental lick.
"Uhm…"
Rito choked on air, his hips jerking upward instinctively, seeking more of the wet heat.
Sachie's notebook slipped forgotten to the floorboards. Her other hand joined the first, trembling fingers circling the hot, rigid flesh. "So warm…" she murmured, mesmerized by the thick vein throbbing beneath her touch. Lala's tail tightened, its violet light flaring brighter as it slid higher, the sensitive tip brushing the crease where thigh met hip.
"Ugh…!"
Rito gasped, arching off the mattress—a wordless plea torn from him. The alien princess beamed on his reaction.
…
Creak.
A faint creak echoed from the hallway—door hinges protesting softly. Wide, disbelieving eyes peered through the narrow gap: Mikan, pale in her thin nightshirt.
Her gaze locked onto the tableau—Sachie's hands stroking feverishly now, Mami's lips sealing wetly over the swollen head, Lala trembling with concentration as violet energy crackled along her coiled tail.
Rito's moans, low and ragged, spilled into the night air. Mikan's knuckles whitened on the doorframe, nails biting deep into the wood. A furious heat surged through her chest, hotter than any alien star Lala had ever bottled.
Inside the room, Lala's tailtip pulsed against Rito's inner thigh—a sudden, electric jolt that arched his spine off the mattress. "Neuronal cascade initiating!" she trilled, oblivious to Sachie's gasp as her fingers tightened involuntarily around his shaft. Rito cried out—a broken, guttural sound—as pleasure ripped through him in blinding waves. He tasted copper, felt the slick slide of Mami's tongue still working desperately at the tip, heard the frantic scratch of her pen against discarded notebook pages.
Mikan flung the door wide. The sharp crack of wood against drywall silenced everything except Rito's harsh breathing.
"Stop!"
Her voice trembled—not with timidity, but volcanic anger. She planted herself in the doorway, fists clenched. Her glare swept over Sachie's startled flinch, Mami's messy withdrawal leaving a glistening strand on flushed skin, Lala's tail loosening with a faint sizzle for a moment. Silence pooled thick and heavy, charged with shock and the lingering ozone-scent of Lala's power.
'…Stupid aliens! Stupid classmates! He's, MY family!'
'What are YOU guys doing to HIM!'
…
"N-nngh…!"
Rito blinked dazedly, the aftershocks still buzzing through his nerves. He registered Sachie's fingers frozen on his slick thigh, Mami wiping her mouth with trembling knuckles, Lala tilting her head in genuine confusion, her tail around his thigh.
Then his gaze landed on Mikan—her flushed cheeks, the furious glint in her eyes, the way her chest heaved. A different kind of heat flooded him—dread mixed with embarrassment and something dangerously close to exhilaration.
The silence stretched, suffocating. Mikan's next words landed like ice shards. "Get. Away. From my brother."
Only Lala remained undisturbed, her tail continued to coil around his thigh.
Rito's hand moved on pure instinct; fingers brushing the sensitive base.
"AHHN~ ♡ Rito! If you touch there now!!"
Lala's whole body shuddered; tail curling tight, orgasm rippling through her in waves.
"Mmnh~!"
Mikan stormed forward, ignoring them all. Her focus pinned Rito—his exposed crotch, the flushed arousal still straining against his skin. She halted inches from the bed's edge. "Cover yourself," she hissed, low and embarrassed. "Now."
"Mikan… W-we were just—"
Her eyes flicked to Sachie's trembling lips, Mami's wet chin, Lala's possessive posture.
Sachie's urgent voice broke in between. "W-we were just taking some notes for—"
"Quiet!" Mikan snapped, her voice cracking.
Her eyes locked onto Mami's trembling pen. "Document this," she hissed. "How invading pests get exterminated."
Lala recovered with dazed stars in her eyes, giggling, oblivious to the situation.
"Hehe… Rito~ ♡. Tomorrow… I want to play with your tail for real!"
*****
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