"You may also set a default expansion rate."
"Default… let's say tenfold."
"You've set the default semen expansion rate to tenfold. You can adjust it instantly during ejaculation. If no adjustment is made, it will default to tenfold. Even at maximum expansion, the system ensures no harm to the female body."
"Alright, end service."
With that, Kagura obtained Kawasaki's address, hopped into his car, and leisurely toured Chiba City before heading to her place.
He allowed extra time because Kawasaki, cycling, needed to shop for his favorite foods. He kept it simple: chicken, bamboo shoots, tofu skin, and Tosa-simmered bamboo shoots, a casual steak, and a vegetable salad.
"Simmered dishes" are a cornerstone of Japanese home cooking, one of Kawasaki's specialties (her best being taro stew). A steak required minimal skill, and the salad was effortless. Though the combination was eclectic, it was an affordable, delicious meal. The priciest item was pre-cooked bamboo shoots, stripped of oxalic acid.
Kawasaki's parents were still at work. Kagura met her younger brother, Taishi Kawasaki, and sister, Kyoka Kawasaki. Taishi was fine, but Kyoka, a lively kindergartener, was a handful, especially since Kawasaki doted on her, leading to some teasing and awkward moments.
Still, Kagura clarified the misunderstanding, convincing the siblings that Kawasaki worked at his home.
"Alright, you two, back to your rooms for homework!"
Annoyed as Taishi and Kyoka pestered Kagura, Kawasaki warned them, balancing cups and plates.
"Yes, Big Sis."
Junior high student Taishi, sensing her irritation, saluted and scurried to his room.
Kyoka, however, flopped onto the sofa, propping her chin, kicking her feet, and eyeing Kagura curiously. "Is Sis sending us away to secretly kiss Kaguya-nii?"
The Kawasaki sisters were strikingly similar, with identical hair colors. Kyoka's violet-gem eyes made her a miniature Saki, a youthful doppelgänger.
"Ugh… W-What?!"
Kawasaki, tidying plates, jolted, nearly slipping and dropping everything.
Thwack! Kagura lightly tapped Kyoka's head, chuckling. "My name's 'Kagura,' not 'Kaguya.'"
"Got it, Kaguya-nii!" Kyoka grinned sweetly, pressing, "So, will you secretly kiss Sis?"
"H-How could that happen?" Kawasaki, face crimson, deflected. "I'm just a maid at work. No extra contact with Zeamura."
"Hm…" Kyoka turned to Kagura. "Kaguya-nii, do you like Saki-nee?"
"Well…" Under Kawasaki's death glare, he stroked his chin, smirking. "I quite like her, but she doesn't seem to like me much."
Her fist clenched, itching to throw a left hook, right hook, and an uppercut.
"Eh?! Sis, you don't like Kaguya-nii?" Kyoka's eyes widened, staring at Kawasaki, then glancing at Kagura. "If I were seventeen, I'd marry Kaguya-nii~"
Kawasaki's face turned into a steaming engine. Her sister dreamed of marrying Kagura, but she'd been proposed to by him—though she questioned his sincerity, it was her first proposal.
"Hahahaha…" Kagura slapped his thigh, laughing. "Ambitious, but our age gap's fixed. If Kawasaki doesn't like me, I'm out of luck."
"Y-You…!" Kawasaki stormed over, whispering sharply in his ear. "Hey! Don't fill a kid's head with weird ideas, or I'll really get mad!"
"Hm? Saki-nee, are you secretly kissing Kaguya-nii?"
Kyoka's bombshell cut him off.
"Ugh—! N-No way!"
Kawasaki jumped, frantically waving her hands.
"But your face is so red. You actually like Kagura-nii, right?"
"I…" She wanted to snap, "Who'd like that jerk?" but meeting his teasing eyes, she faltered, crossing her arms with a huff. "J-Just… don't hate him… Far from liking."
"So, you might really like him later?"
"Ah—! Stop asking!!"
Kawasaki shook her head, covering her face in a frenzy.
Seeing her sister so flustered, Kyoka smirked, satisfied. Kagura thought, This kid's a little devil, tormenting her sister at such a young age.
As an older brother, he'd always teased his own sister growing up.
"I'll head back, then. Won't disturb your secret kissing…"
Kyoka hopped off the sofa, skipping to the stairs, flashing Kagura a "V" sign.
He shook his head, chuckling at the mischievous girl.
With her gone, the dining room's atmosphere turned peculiar. Kagura had planned for Miura to give him a blowjob, but Kawasaki interrupted. Suppressing his urges, he now found himself alone with her at her home…
"D-Don't come closer…"
Kawasaki crossed her arms in an X, retreating step by step.
You can stay, but don't torment me in the living room!
"Uh… watch out, don't trip."
Kagura stood, pointing behind her.
Too scared to look, she kept backing up, her socked heel landing on Kyoka's turtle toy with a squelch.
Kindergarteners and toys were normal, but Kawasaki slipped, yelping, "E-Eh—!" and fell backward. Kagura lunged, barely catching her, or her head would've hit the floor hard.
His hand, however, was crushed between her head and the floor, fingers screaming in pain. He felt his bones crack.
The system promptly intervened, repairing the fracture.
Straddling her waist, legs spread, his left hand pinned under her head, Kawasaki trembled in shock. Opening her eyes, she saw him wincing, sucking in air.
Realizing he'd cushioned her head, she exhaled, then paled, flipping over to grab his left hand, heart-wrenching. "Y-Your hand… Is it okay? I'm so sorry…!"
A pianist's hands were more precious than life. Seeing him speechless, lips twitching in pain, tears streamed down her face.
Both knelt on the floor.
"Ugh… Sob…" Holding his hand to her forehead, she trembled, bowing repeatedly. "I'm sorry… So sorry… I'll do anything, even sell myself to make it right."
He used his precious hands to protect me… Yet I doubted his proposal's sincerity… I'm an irredeemable idiot!
But it was too late to accept, and she felt unworthy of him.
"Silly…" With his hand healed, Kagura sighed, stroking her head with his right hand, smiling. "As long as your head's fine."
Only the system let him be reckless now. In middle school, he'd rather face-plant than risk his hands. Ai had saved him from falls, taking the brunt herself, leaving him unscathed.
His affection for Ai was unmatched by most girls.
"It's… okay?"
Kawasaki opened her trembling eyes, panicked.
"Should be fine. Just stings a bit."
He clenched and unclenched his fist before her, mimicking piano keys. The flesh ached, but it was flexible—no issue.
She grabbed his hand again, glancing warily at the living room's staircase, steeling herself. Gently holding his knuckles, she opened her mouth, taking them in.
Eyes closed, she sucked and licked devotedly.
From thumb to pinky, her licking was tender yet sensual. Her soft tongue and warm, wet mouth sent a jolt to his groin.
After a while, she released his knuckles, licking his palm like an obedient kitten, then his hand's back. Eyes still shut, she finished, shyly hiding behind his hand, peeking. "D-Does… it still hurt…?"
"Thanks, it's fine, but…"
"B-But?"
The word "but" spiked her nerves. Wiping her teary eyes roughly—no makeup to ruin—she braced.
"But… uh… it's swollen."
He gestured to his crotch.
"…" Kawasaki silently released his hand, stood, bowed in apology, and walked to the sink, saying softly, "Thirsty, right? Wait a sec, I'll… take you to my room for tea."
She'd heard him clearly but couldn't say, "I'll help you relieve it in my room."
"Tch…" Kagura said nothing, carrying the remaining dishes to the sink. She hurriedly took them, scolding, "Stop moving! What if you hurt your hand again? Sit and rest."
He circled behind her. She'd removed her cooking apron, still in her Sobu High uniform. Her hair, usually a ponytail, was down—only tied up at his place. Her long hair, now loose, felt obstructive… but didn't stop him from reaching for her rear.
"Hey, I said… don't mess around…"
She glanced nervously at the living room's sliding door, her dishwashing hands trembling.
This jerk…! Always from behind? Not in the living room—what if Taishi or Kyoka see?
"You got me all worked up with that licking. Take responsibility, yeah?"
His hands slipped under her skirt, ten fingers splaying over her plump rear, kneading gently.
"You… can't even wait for me to finish the dishes?"
Her fist tightened again.
"Gimme a kiss."
He leaned close from behind, tilting his face to her ear, demanding a smooch.
She dodged, turning away. "I just ate, haven't brushed or rinsed…"
"So? I haven't either."
"That's different!" She stomped his toe with her heel, muttering, "I don't want to kiss you with food breath."
"…What about my food breath?"
"You're the master, I'm the maid. I don't get to complain."
"Hey, didn't you say you're only a maid on weekends?"
She squirmed, nudging his chest with her elbow. "Stop it… What if someone sees?"
"Who's stopping a close couple from getting cozy?"
His hands slid from her armpits to her chest. Despite her shirt and bra, her E-cup breasts molded to his touch, trembling with each squeeze, her soft, reluctant yet pleased whimpers driving him to press his erection against her rear.
"Grabbing my butt's less noticeable. Don't grope my chest…"
"It's softer, no? My hand hurts—use your chest to massage it."
"What kind of nonsense… You're ridiculous."
She sighed, resting her hand on her forehead, but didn't stop him.
He didn't go so far as to slip inside her shirt, content with kneading through her clothes. It felt good but unsatisfying, so he slid his hands back to her rear. She muttered "idiot" but let him be.
As she washed dishes, head down, he slipped her dark purple, sexy panties down. Kawasaki favored bold, dark lingerie—last time, a black lace pair when he'd taken her from behind. Too hot.
"…That jerk!"
She clenched her fist but stayed silent.
He crouched, sliding the panties to her ankles, tapping her left foot. She lifted it obediently, then the right, stepping out.
He brought the purple panties to his nose, inhaling deeply with exaggerated sniffs, making her blush and tremble, heart racing to the Southern Hemisphere.
As he stood, she was still dazed. Then, "Sis?" startled them both.
It was Taishi. Kawasaki's left hand shot back, pinning Kagura's head down as he rose, and she faced her brother calmly. "What's up?"
Kagura knew he couldn't stand, so he patted her hand. She withdrew it, resuming dishwashing casually. He stuffed her panties into his pocket.
Peering up at her bare JK skirt, he parted her legs slightly, tilting his head to nestle between her thighs.
She wanted to crush his head with her legs but had to maintain her cool, older-sister vibe for Taishi.
"Uh… where's Kagura-bro?"
Taishi scratched his head, looking around.
"K-Kagura… Zeamura's in the bathroom."
With Kagura's bag and phone still there, she couldn't say he'd left, so she lied.
"Oh… I wanted to ask him something."
Taishi stepped closer.
"What? Homework trouble?" She pointed upstairs sternly. "Do your own work. What don't you get?"
"A math problem…"
"Math?" She tilted her head, glancing down, suppressing discomfort as she clamped Kagura's head. "Zeamura's math is awful—barely passing. He's no help."
"No way… You pulling my leg, Sis?"
"Why would I? I didn't know either until his butler told me."
Her face reddened as Kagura's lips pressed her private area, his agile tongue flipping her lips relentlessly.
His nose grazed her clit, her faint teal fuzz tickling him, laden with her feminine scent. He inhaled deeply.
"Oh—! A butler?! True aristocrat!" Taishi, excited, asked, "What's your job, Sis?"
"M-Me…? I'm…"
Her body quivered as Kagura pried her open, licking her crescent-shaped hymen.
This jerk does the most shameful things!! Ugh, damn it! Good thing I didn't accept his proposal—who knows what he'd do!
"Hm? What's that?"
Taishi blinked curiously.
"I'm…" She gripped a plate, coughing, head down. "Just… a trainee personal maid…"
"Got it! You're great at caregiving—perfect for a maid!"
Taishi clapped, praising her.
"Skip that problem! I'll explain later. Do something else!"
Barely containing the pleasure, she covered her lips with her arm.
"Alright, thanks, Sis."
Taishi headed upstairs, muttering, Sis seems off today… My imagination?
Not his imagination—she wasn't unwell, just too pleasured.
As he left, Kawasaki rinsed the soap from her hands, covered her mouth tightly, and, relaxing from her tension, climaxed standing, licked to orgasm by Kagura.
Hot tides surged from her twitching cervix, love fluids mingling with her folds' secretions, flowing to her entrance, squeezed through her convulsing honeypot, and drunk clean by Kagura's mouth.
Her feet arched, toes curled, hands gripping the sink's edge, head high as if riding his face, savoring the shameful, thrilling carnal bliss.
Finished, Kagura stood slowly.
His retractable tongue licked her fluids from his lips, making her too shy to look up. He grabbed her left hand, pressing it to his near-pants-tearing erection.
She jerked back as if shocked but soon "reluctantly" touched again, fingertips grazing the base to the tip.
He kissed her cheek, saying, "Good Kawasaki, lick it for me."
"Don't be stupid…!"
Her eyes locked on the living room entrance.
"Tch… Please? I'm begging!"
"Later, in my room."
Not like I won't do it. What's the rush?
"I want it here."
"…" She glared, muttering, "Pervert!"
But she promptly crouched, unzipping his pants, pulling down his briefs, and freeing his terrifying manhood.
Always making me do shameful things… Jerk!
With his "super-hardening" ability, it felt like a skin-wrapped steel baton.
"Don't bite. Otherwise, do as you like."
"W-Wait… Really put this in my mouth…?"
Swallowing hard, she rubbed it disbelievingly.
She'd seen Taishi's pre-pubescent penis, sometimes erect, but its hardness, girth, and length were leagues below Kagura's—night and day.
So this was what went in my butt… No wonder my insides felt churned. How could it not hurt? Wait… Later…? No, no, no! My pussy can't handle that!
"I licked you."
"That was your choice… Fine."
Heart steeled, eyes closed, she opened her mouth, taking him in.
The deeper she went, the more endless it felt, as if it could reach her stomach.
"Ugh…"
She gagged but persisted, hands hugging his rear, preventing withdrawal.
He's done so much for me. If I stop just because of gagging, I'd let him down. What am I to him? His ex-fiancée?
Kagura casually washed the remaining cups, while she licked fervently, almost currying favor. He patted her head gently. "Don't push too hard."
She didn't reply, flashing an OK sign.
She was determined to conquer his manhood.
His masculine scent hit her, not overpowering, but his pubic hair tickled her nose. Itching, she resisted, then inhaled deeply, mirroring his earlier sniffing.
The scent was oddly addictive, stirring her womb and pussy.
Her slick tongue, pinned by his shaft, couldn't move. Treating her mouth like a pussy, she opened her throat, swallowing, letting him thrust deeper, her lips tightening, exhaling through her nose to create a vacuum.
After their last encounter, she'd researched "how to please a boyfriend" before bed, despite not being his girlfriend or fiancée, wanting to improve.
Using a cucumber as a prop, she'd mastered vacuum oral, bearable despite discomfort.
Rocking her head, his shaft thrust in her mouth, cheeks hollowing, lips puckering. Each deep thrust made her gag, eyes rolling back, a sight so erotic when he glanced down.
Seeing no climax, she paused to breathe, gripping the base with her right hand, re-engulfing the crown and upper shaft, licking the coronal groove while stroking the lower half—another cucumber-learned trick.
This was far more stimulating than raw licking. He felt the urge to ejaculate, the cups long cleaned, un-rinsed in the sink.
Then, Kyoka bounced into the living room.
"Hm? Kaguya-nii, where's Sis?"
She sucked her finger, scanning with innocent eyes.
Kagura pressed Kawasaki's head, keeping her on his shaft.
"Oh… Y-Your sister's in the bathroom. She asked me to wash the cups."
He lied, caught in the same bind as Kawasaki earlier.
"Curse others, dig two graves."
Fittingly, a quote from Hell Girl's Enma Ai, one of his favorites.
Kawasaki was mortified but couldn't emerge, patting his rear to urge him to shoo Kyoka.
The scene was unfit for a child, and if seen, her sisterly authority would crumble.
"Sis is mean, making a guest wash cups!" Kyoka's cheeks puffed. Kagura coughed, continuing, "Right, Kyoka, what's up with your sister? I'll tell her to find you."
"Hm… Nothing big. My kindergarten teacher assigned a craft, and I want Sis to help." Pointing to her hair, she giggled, "Kaguya-nii, guess what? Saki-nee's hair tie is made from her panties! She's awesome at crafts!"
"Hahahaha… Thanks for the juicy intel."
Stifling laughter, he rocked Kawasaki's head.
Her left hand balled into a fist, thinking, If Taishi said that, he'd be dead.
Kidding—she adored her siblings, but it was embarrassing.
Under Kyoka's pure gaze, his climax surged.
"No choice." Kyoka shrugged, heading to the stairs. "Tell Kaguya-nii to pass it on!"
"It's 'Kagura,' not 'Kaguya'!"
"Ehe~"
She stuck out her tongue, flashing a peace sign.
Once she was gone, he spun, grabbed Kawasaki's head, crouched, and thrust his shaft deep into her throat, the crown hitting her esophagus. She slapped his legs, muffled, but adapted, hugging his rear.
Inhaling his pubic scent, she endured scalding semen flooding her throat. No need to swallow—his shaft, lodged in her esophagus, unleashed a torrent, gushing directly down.
With "tenfold semen expansion" active, his perceived 50ml was 500ml to her, like a feeding tube pumping 500ml of thick porridge.
Fresh from dinner, her stomach bloated, thankfully moderated by her restrained eating—six-tenths full, a wise choice.
Kagura, like a hentai beastman, could bloat a girl's belly with one oral or anal session.
Unfinished, he withdrew. Guessing his intent, she didn't stick out her tongue or open her mouth, coughing with eyes closed.
Gripping his still-ejaculating shaft, he stroked rapidly, thick semen spurting from the tip, each spurt amplified tenfold, coating her face and bangs, dripping slowly.
She timidly licked the semen on her lips.
With his "variable semen" ability, its smell vanished, tasting like each girl's favorite or desired flavor.
Kawasaki desired its natural taste. Her research described it as a sticky, salty, fishy flavor, hard to stomach without resolve, but she was willing to endure any stench for him.
As his ex-fiancée, after all.
The potent taste dizzied her. She licked her fingers, cleaned her lips, then grasped his shaft, squeezing from base to tip, sucking the crown to extract residual semen.
"Hah… Hah…" He asked again, "Kawasaki, marry me!"
"Absolutely… cough, no way!"
Coughing up strands of semen, she preciously licked them clean.
"…Sigh, fine. Let me clean your face, at least?"
"Oh… Thanks."
Unsure how he'd do it, she trusted it'd be clean.
A quick "Cleanse" did the trick.
Modified by the system, the cleaned recipient instinctively thanked him, despite not understanding how.
"Thanks… I can breathe better…" She patted her clean, moist cheeks, standing shakily, legs numb. He steadied her. Meeting his gaze, she blushed, turning away, muttering, "I never noticed… You're quite the pervert."
"Sorry for being a pervert!"
He rolled his eyes.
"No… I'm not mad… Don't you get mad…" She swung his hand, coughing, rubbing her semen-filled stomach, whispering, "It's fishy and salty… but I kinda liked it…"
"Hiss…"
He was stunned. Her liking the raw taste was impressive.
She quickly rinsed the cups, and he used "Cleanse" on the dining room and table, texting Nao he'd be late. Kawasaki thanked him, then approached, extending her hand.
"Hm?"
"Hm what? M-My panties!"
Her face flushed, spitting out the word.
"Oh." He pulled them from his pocket, lifting them to his nose…
Slap! She snatched them, holding them far, glaring. "Pervert!"
He touched his nose, chuckling inwardly: Your reaction's just like Yumiko's!
She slipped them on, grumbling, "It's sticky and chilly down there… You licked last time too. You love it that much?"
"Yes, I adore tasting jade."
"…" Speechless, she dragged him upstairs. "I'll check on Kyoka and Taishi's homework. Wait in my room."
"Got it."
She twisted the knob of the innermost door, pushing it open.
The room was cramped, poorly lit—likely she'd given better rooms to her siblings. Harshly put, his bathroom was as big as her room. A dual-income family raising three kids was tough.
"It's small, but make yourself at home."
She plopped him on her bed.
Her room was girlish despite her tough exterior. No vanity, but a full-length mirror stood firm. The old desk—secondhand or a family hand-me-down—sat by a small round rug between the bed and wall. A metal drying rack with clips held two sets of her underwear, likely forgotten before visiting him.
The bed, warm tea-colored with a dark coffee pillow, was 1.2 meters wide, 2 meters long. Besides the bed, desk, chair, and zippered fabric wardrobe, the room held little else.
Having a guy in her room was awkward for her—her brother didn't count as "male" in that sense.
"Feel free to look around… Just don't make a mess."
To keep him entertained, she added thoughtfully before leaving.
"Cool, I'll wait."
He waved her off.
Kawasaki seemed like a delinquent but was a good girl at heart. Her room held no secrets—no toys, maybe just underwear, but…
Worn or freshly removed panties were far more appealing than clean, folded ones.
She trusted him completely, letting him "look around" on his first visit, a warmth that made him feel at ease.
Still, he didn't snoop.