Chapter 15

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Chapter 15: Everyday Life ① (Deep Blowjob)  

Author’s Note: No, I mean… I’m truly sorry. The details are in my activity report if you have time to check… I’ll try to update gradually from now on. Since there may be harsh opinions, I’d truly appreciate it if you could share your thoughts in the comments.

As the title suggests, this is a slice-of-life chapter. It was long, so I’ve split it. My apologies. There isn’t much progression, but I’ve scattered a few foreshadowing elements here and there. 

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Morning sunlight streamed through the curtains, illuminating Rin’s profile as she lay on the bed.  

Her divinely sculpted beauty transformed the drab room into a painting of noble elegance.  

Glurk❤️ Schlurp❤️ Gush❤️  

Yet the room echoed with obscene sounds utterly unbefitting such an ethereal scene—the wet vacuum noise of suction, animalistic panting like a bitch in heat, and the sloshing of thick fluids.  

The source lay between Rin’s legs.  

A demonic monstrosity unimaginable from her delicate appearance—a massive futanari cock that mocked even foreign porn stars’ endowments. Its grotesque size would terrify even fisting enthusiasts.  

Not just in length and girth. The swollen glans, brutal coronal ridge, and complex shape made it a woman-destroying weapon.  

Terrifyingly, this was still mid-growth. Since her first ejaculation weeks prior, it had grown thicker and more vicious.  

The penis protruding from where her clit should be looked photoshopped—its inky blackness stark against Rin’s porcelain skin. Yet this hyper-erect flesh rod now sheathed itself completely in velvety warmth.  

Bathed in sunlight, silvery hair shimmered. Though resembling Rin, the softer features held a charming innocence. Flawless snow-white skin and a fragile frame that begged protection.  

Shirojo Saki—Rin’s biological sister—buried her face between those thighs, cheeks bulging around the shaft.  

Fellatio?  

No—to observers, this would look like a brutal deep blowjob.  

Rin’s inhuman cock dwarfed Saki’s face in both length and thickness. Impossible to fully take. It conquered not just her mouth but forcibly dilated her esophagus.  

Of course, breathing was impossible. Her neck bulged unnaturally, face tomato-red.  

Yet the cock pistoned ruthlessly at throat-fucking speeds—treating her like a sex toy. A lethal act by any measure.  

But Rin’s mystical scarlet eyes remained shut under long lashes. Though breathing raggedly, her limp body showed no consciousness.  

Meaning this was Saki’s doing.  

——Saki was Rin’s sister, her personal fleshlight, her cumdump, her sex slave. Every strand of silver hair, every heartbeat—all Rin’s property.  

A week had passed since Saki’s complete surrender declaration. Morning service was her duty.  

Gulp❤️ Glurk❤️  

Saki bobbed desperately despite oxygen deprivation, taking more length each time.  

“Nghh❤️ Tastes so good…❤️”  

Even with two-thirds of the monstrous cock down her throat, she moaned blissfully.  

Her glassy eyes adored the life-threatening weapon like a lover.  

The throat-scraping thrusts.  

The rotting stench.  

The bitter precum.  

The fading body heat.  

——Even the creeping terror of death.  

As Rin’s trained masochist, all brought Saki joy.  

Squelch❤️ Splurt❤️  

Darkening vision couldn’t stop her drenched pussy from spraying. She writhed, performing obscene pleas for her unconscious master.  

(Happiness…❤️)  

Broken devotion.  

Extreme masochism.  

Twisted ruin-seeking.  

To normals, madness.  

But serving Rin was Saki’s greatest joy—her life’s purpose.  

Born as Rin’s fucktoy, yet raised deluded as an equal.  

Now she thanked Rin for correcting her—serving fervently. Her expert tongue swirled with prostitute-level skill—a premium mouth fleshlight.  

Schlorp❤️ Gush❤️  

Cloudy drool dripped, staining sheets. Below, her pajamas failed to contain the flood.  

Throb❤️ Pulse❤️  

Feeling Rin’s impending climax, Saki redoubled efforts.  

Gush❤️ Splurt❤️  

Just as the crazed thrusts peaked——  

“Nghh—!!❤️”  

A pale hand suddenly gripped Saki’s hair, yanking her deeper as hips snapped up.  

The cock plunged past human limits——  

SPLURT❤️ GUSH❤️  

White erupted directly into her stomach.  

Glurk❤️ Gulp❤️  

Saki convulsed, squirting wildly as her belly visibly swelled.  

Finally, Rin pulled out—Saki diligently licking clean every drop.  

“Swallow properly. Savor it.❤️”  

A crystalline voice—clear yet seductive.  

Obeying, Saki noisily gulped the semi-solid load, coating every tooth crevice with its scent.  

“Ahh❤️”  

She opened wide, proving not a drop remained. Pubic hairs stuck to her lips.  

Above, Rin sat up smirking—unhidden sadistic glee.  

Saki staggered upright, kneeling formally to press forehead to floor in ultimate gratitude—finding perverse joy in the debasement.  

“Good morning, Onee-sama.❤️”  

“Morning, Saki.❤️”  

Rin ground her sandal into Saki’s silver hair—the “carpet” whimpering in ecstasy at the mistreatment.  

“An excessively depraved and immoral relationship—this was the twisted daily routine of the two in the mornings.”  

—  

“Onee-sama, aaahn~❤️”  

Saki obediently accepted the offered spoon. Fluffy scrambled eggs melted on her tongue, the spiciness of black pepper mingling with the refreshing acidity of tomatoes—a fresh jolt to her groggy morning senses.  

The taste, which brought out the natural flavors of the ingredients, was the specialty of their mother, Mana. While it might have felt lacking for dinner, it was perfect for breakfast.  

Rin relaxed her cheeks as she took another bite. Saki watched her with feverish adoration.  

“My, how close you two have become…”  

Mana let out an exasperated sigh as she watched her daughters being overly affectionate over breakfast.  

Their past discord had been a headache for both parents. While their reconciliation was a good thing, this level of intimacy was… unusual, to say the least.  

And the way they had changed so drastically in just a few weeks—it was unsettling.  

Her husband, Takashi, chimed in reassuringly from beside her, barely looking up from his newspaper.  

“What’s the harm? There’s no such thing as being too close.”  

“…Well, I suppose you’re right.”  

Though his stern face barely shifted, Mana could detect the slight softening in his expression.  

Saki clung to Rin’s arm, eagerly offering another spoonful, which Rin accepted without hesitation.  

Yet, Mana couldn’t shake the strange unease creeping over her.  

—  

Squelch❤️❤️  

“Nghh~❤️”  

“No noises, understood?❤️”  

“S-Sowwy…❤️❤️”  

Schlorp❤️❤️  

“…Hmm?”  

—  

Walking to school with Saki in tow, Rin maintained a careful distance in public. She had ordered Saki not to cling too obviously, presenting themselves as simply “a very close pair of sisters.”  

Even so, their sudden closeness had drawn attention at first.  

“Speaking of Onee-sama, Golden Week is coming up soon, isn’t it?”  

“Indeed. Perhaps we should go shopping for clothes. Don’t you have a training camp, Saki?”  

Yasou Academy’s tennis team was nationally renowned, known for its rigorous training. Holidays were usually spent in intense practice camps or away matches. Golden Week was prime time for such events, and Saki had a joint training session scheduled.  

But—  

“Of course I won’t be going~❤️ I’ll be spending every second serving you, Onee-sama~❤️”  

Saki gazed up at Rin with dreamy devotion, clinging to her right arm and nuzzling like an affectionate cat.  

Anyone who knew the old Saki—the disciplined, tennis-obsessed girl—would be stunned. The girl who once lived for the sport now saw it as nothing but a “nuisance” compared to serving her master. Today, she had even skipped morning practice to devote herself to Rin.  

“Good girl. I’ll spoil you thoroughly.❤️”  

Rin’s lips curled into a wicked smile as she patted Saki’s head like a well-trained pet.  

This wasn’t her usual honor student smile.  

It was a demonic grin—one that sent chills down the spine. Behind it burned an unconcealed, bestial hunger, enhancing her already flawless beauty with a terrifying, degenerate allure.  

Even Saki, accustomed to it, flushed tomato-red, her breath hitching.  

Her gaze was irresistibly drawn to Rin’s lips—naturally ruby-red, soft, and glistening.  

Saki had never kissed her before.  

She had done far more intimate things, of course, but a kiss—lips meeting lips—held a special meaning for her as a girl. There was only one person she would ever give it to.  

Yet, even after pledging herself as Rin’s slave, she had never been granted that privilege. As far as she knew, Rin hadn’t even kissed Kaede.  

Perhaps Rin, too, saw kissing as something sacred.  

Saki longed for that first kiss, but forcing it would make her a failure of a slave. All she could do was pray for the day Rin would allow it.  

—  

To outsiders, their closeness was unnatural for sisters—exclusive, almost possessive.  

But before that atmosphere could thicken further—  

“Rin! Mornin’~!”  

A bright, energetic voice cut through the sweetness like a knife. A cheerful girl slapped Rin’s shoulder with playful force.  

“Good morning, Akane.”  

Rin turned her gaze away from Saki to meet the beaming smile of an undeniably cute girl—one whose beauty stood out even among Yasou Academy’s sea of attractive students.

Compared to Rin’s goddess-like beauty and Saki’s fairy-like delicacy, she might pale slightly, but her features were still refined enough not to fade into the background. Where Rin’s untouchable, otherworldly allure pushed people away, her approachable charm and frank demeanor gave the impression of a ‘reachable beauty’—or, less kindly, a ‘maybe-I-have-a-shot’ kind of girl.  

Her figure wasn’t bad either. Her modest, bowl-shaped breasts looked soft—but more importantly, they were perfectly shaped. The thighs peeking out from her uniform skirt were surprisingly plump for her frame, drawing the eye almost against one’s will.  

Her signature honey-brown hair swayed in the wind, carrying a sweet fragrance that tickled the nose.  

Misaka Akane.  

Rin’s childhood friend and her one and only best friend. Naturally, she was also close with Saki.  

“Morning, Saki-chan!”  

“…Good morning.”  

Saki responded curtly, still clinging to Rin’s arm. The once-cheerful little sister seemed to have abruptly entered a rebellious phase, leaving Akane frowning. The fact that Rin and Saki’s relationship had improved so drastically in contrast was nothing short of baffling.  

“Oof, cold. Did I do something wrong?”  

Saki ignored Akane’s troubled expression, instead fixing her with a sullen glare from behind Rin.  

Of course, Saki knew how close the two were. Knew their bond was unshakable.  

But as someone hopelessly in love with Rin, she couldn’t help feeling jealous. More than that, some girlish intuition screamed at her that Akane was dangerous.  

Saki’s glare sharpened, like a cat defending its territory.  

Rin, however, showed no sign of reprimanding her. Akane felt a flicker of unease—normally, Rin would’ve stepped in to soothe Saki by now. Was she just indulging her little sister?  

Either oblivious or indifferent to the tension, Rin changed the subject.  

“Speaking of, does the Astronomy Club have plans for Golden Week?”  

“We’re going on a trip to Nagano! They say it’s got the clearest night skies in Japan!”  

Akane’s eyes sparkled like the stars she adored. She was a bit of a romantic at heart, and stargazing was one of her hobbies—though her interest was purely aesthetic, with no scientific astronomy knowledge to speak of.  

“…Though honestly, it’s more like a sightseeing trip. Outsiders can join too—wanna come, Rin?”  

“I’ll pass.”  

“Yeah, I figured.”  

Akane chuckled wryly at Rin’s immediate rejection. She’d known the answer before even asking.  

The real reason she’d invited her? Other club members had begged her to. Countless students—boys and girls alike—longed for a chance to get closer to Rin. If only Rin realized just how loved she really was.  

“——Ah.”  

Akane suddenly stopped mid-step, a soft gasp escaping her. Rin followed her gaze and froze.  

Near the school gates, a group of students chatted animatedly. At the center stood a single boy.  

Golden hair that seemed to glow. Sharp, aristocratic features that hinted at foreign blood. A towering frame well over 180 cm, with a muscular build.  

Kanzaki Kouki.  

A golden prince straight out of a shoujo manga.  

“Ahh, Kanzaki-kun… so dreamy… ❤️”  

“…………”  

Akane stared at him, starry-eyed and lovestruck.  

Rin, too, found herself staring blankly. That warmth swelling in her chest—was it still affection? Even after everything, was he still the one her heart longed for?  

“…Onee-sama?”  

Saki’s voice snapped her back.  

Even Saki had to admit Kouki was handsome. The embodiment of a prince any girl would fantasize about—unless, like her, they were an exception.  

But if Rin saw him as a man…  

If, by some chance… the two ended up together…  

If——she became unnecessary——  

Saki trembled, clinging tighter to Rin’s arm as if to prove her worth.  

Meanwhile, Rin’s thoughts had already strayed elsewhere.  

(…That girl’s chest is huge. A titfuck would feel amazing ❤️ That one over there looks so smug… I wonder what face she’d make if I choked her ❤️)  

Her gaze had long since shifted to the beautiful girls surrounding Kouki. Licking her lips as she imagined their debauched expressions, she looked nothing short of lecherous.  

“Hey, Rin, we should get going.”  

(That plain-looking one has such a lewd body ❤️ If I raped her from behind, I bet she’d scream so prettily ❤️)  

“Hellooo, Rin?”  

(And her… the student council president. I wanna spank her ass and ruin that prim face of hers ❤️)  

“RIN!”  

“—Huh? Wh-what?”  

Akane’s shout yanked Rin out of her depraved daze.  

“Geez, staring at Kanzaki-kun like that… We’re gonna be late for first period!”  

“O-oh. Right. Saki, let’s go.”  

“Yes, Onee-sama.”  

Adjusting her stance slightly to hide the throbbing erection between her legs, Rin headed to class.  

While Akane continued stealing glances at Kouki, Rin’s eyes remained locked on the girls surrounding him.  

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Author’s Note: Once again, my apologies and gratitude. I’m truly sorry for the long delay in updates. Thank you so much for reading this far. I don’t have any backlog, so updates will still be slow. That said, the next chapter is mostly done, and I have plans for the next few, so the wait shouldn’t be too long… probably.  

Sorry for the slow progression. I’m even frustrated at how long it’s taking to expand the harem. After finishing the next chapter, I’m thinking of writing 1-2 chapters focused on Golden Week, where the next conquest target will appear. Thank you for your continued support.