"I'm afraid I'm defiling your eyes, though I can't be sure..."
The breath that escaped from her thick, sensual lips was hot, her words tinged with longing.
As she rose slowly, the obi fell completely, sliding off her shifted kimono to reveal her porcelain skin. She wasn't wearing any undergarments. Her slender abdomen, with its slight indentation at the navel, was surprisingly delicate—so fragile it seemed she could be broken with the slightest touch.
"Please... look at me. If Kotoha can be fertilizer for Onii-sama's writing... I offer my body."
Hearing those words, I felt no hesitation in burning her naked form into my memory. Of course, it was all for future reference. At least half of me believed that sincerely. The other half... well, you know the rest.
Kotoha-chan's small breasts still had a firm, rounded shape, clearly indicating that she had fully developed her secondary sexual characteristics.
Yet her mons veneris was smooth and hairless, like a freshly peeled egg, betraying a lingering childishness in her body.
She was like a fruit just beginning to ripen, hovering between girlhood and womanhood. That was Kotoha-chan's body.
"Kotoha-chan... did you come here for that reason?"
When I asked, her sugar-candy-like body flinched, and her gaze darted away.
"No, that's... such an indecent thing..."
The seed of my suspicion naturally lay with Tsurugi Shino.
Kotoha-chan's words were almost identical to what Shino had said on the rooftop that day. Essentially, she wanted her body to be used for creative purposes. In Shino's case, she also wanted to satisfy her sexual desires—but what about Kotoha-chan?
Feeling embarrassed, Kotoha-chan left the choice entirely up to me, but her pale pink nipples were erect, and her tightly closed labia were slightly moist. A faintly sweet, damp feminine scent wafted from her body, which she had been hiding beneath her kimono.
"...Onee-sama once told me that men are wolves. Once they reach a certain age, they must be cautious. Even the most gentlemanly man is a wolf at heart, constantly thinking about devouring a woman. She warned me to avoid provocative behavior that might lead to misunderstandings. But she also said I must take full responsibility for my actions. If my thoughtlessness has caused you pain, Onii-sama, I want to take responsibility for that... That's all."
Her face remained turned away from me, but she glanced at me sideways, hesitantly, murmuring in a delicate voice.
Based on my previous impressions, Kotoha-chan and Shino might not seem similar at first glance, but they're actually quite alike.
If that's the case...
"...Responsibility? Don't worry about it. It's my fault, so there's no need for you to feel bad, Kotoha-chan. Come on, you'll catch a cold. Put your clothes on."
"Huh—?"
Kotoha-chan's large eyes widened in surprise.
I desperately resisted the urge to pounce on her sweet words, remembering that every word out of my mouth was part of this calculated game.
If my impression was correct—that Kotoha-chan and Shino were fundamentally similar—then her behavior was solely meant to provoke me. She was likely just toying with me, not seriously accepting my advances.
And if our kinks perfectly aligned...
If Kotoha-chan was a high-level masochist...
"Ahh, that..."
Dragging it out would only make her burn hotter.
Kotoha-chan crossed her arms as if embracing herself, shivering slightly.
Now, what will she do?
"Please don't hold back. Kotoha simply wishes to honor Onee-sama's teachings, but..."
"O-oh! O-oh?!"
She trailed off, then wrapped her arms around my neck, pressing her body against mine. She practically straddled me, their bodies flush, and whispered in my ear:
"My apologies. I'm still too embarrassed to expose my entire body..."
What I could feel was the softness of her breasts. But within that softness, two anomalies stood out: firm, erect nipples, one on each side.
Kotoha-chan's nipples were hard. In other words, she was aroused... or at least, that's what I assumed. Surprised by this realization, I became convinced that she shared Shino's peculiar fetish.
"If I do this, Onii-sama won't be able to see my body... If I press closer... stick completely to you, leaving no gaps, you won't see anything."
Ah, I see. A flawless theory.
Not just her body, but Kotoha's cheek was pressed against mine as she whispered in my ear. Her sweet, melted whisper, so close I could feel her breath, sent shivers down my spine.
This is devastatingly effective. Instead of teasing Kotoha-chan, I'm the one being teased.
"I hope you'll let me... help you calm down, Onii-sama. Even if my body is plain compared to Onee-sama's... please allow me to show you."
Then, without warning, Kotoha-chan raised her knee, and a soft sensation brushed against my face. Her arm reached around to the back of my head, pulling me into the warmth of her chest. I never expected her to resort to such forceful measures.
Soft, squishy breast flesh was pressed against my mouth. It would be hard to call this meager—unless you were comparing it to Tsurugi Shino's.
It's not that Kotoha-chan's chest is bad; for her age, it's more than ample. In fact, by the time Kotoha reaches Shino's current age, she might even surpass her.
But I couldn't answer even if I wanted to—my mouth was stuffed with soft flesh. If I tried to open my lips...
"Hyaaun♡"
The smooth, slightly sweaty breast would plunge into my mouth.
The resilient nipple struck my teeth, making Kotoha-chan yelp shrilly. Still, she didn't back down, pressing her body against me with relentless force. She showed no sign of hitting the brakes—hell, I was starting to wonder if she even had any brakes.
Damn it... I can't hold on much longer.
Reaching my limit, I bit down on the soft breast flesh.
"Ah...! Don't suck my nipple like that, Onii-sama... It makes me feel like a baby... My body isn't fully mature yet, is it...?"
Though she claimed her body wasn't fully mature, her breasts were undeniably lush and ripe. There was no actual liquid seeping out, yet I couldn't help but taste a faint milky sweetness.
"Aah... I'm sorry, Onii-sama... Kotoha can't produce milk yet... So... so please... mmf... don't... don't torment my nipple... please...♡"
Kotoha-chan's soft, resilient flesh was like a chewy candy. I pinched it between my teeth, rolled it with my tongue, pursed my lips slightly, and sucked loudly, making sure to make a lot of noise.
With every movement, Kotoha let out a plaintive moan, her body writhing in my arms. It struck me as brave somehow, and... it was making me want her.
Why is Kotoha-chan doing this? I wondered.
Could there be problems? I hesitated.
But those doubts began to fade, and I found myself tempted to accept this all-too-easy invitation.
It must have been because we were pressed so closely together. Kotoha-chan's smooth, porcelain skin was glistening with sweat, her flushed cheeks giving off an almost adult sensuality that belied her age.
I wanted to see Kotoha-chan more disheveled—driven by that single-minded desire, I bit down firmly on her, my teeth sinking in with a sharp crunch.
"Ugh! Kyun... Kuuuuuu...!"
Kotoha-chan's arms tightened around my head, squeezing me in a desperate embrace.
She stifled her moans, her body trembling as she desperately tried to endure.
There was no doubt about it. Kotoha-chan was enduring an orgasm.
"Hi... ah... ugh...♡"
As the wave subsided, she must have felt drained. Her arm fell limply, and I finally managed to escape the embrace. Kotoha, sitting curled up on my lap, had teary eyes and a dazed expression, as if she were in a trance.
"Kotoha-chan, are you alright?"
"H-yes... My head feels numb... I feel like I might faint... but trying to comfort myself... it felt like such a childish attempt after that intense stimulation...♡"
"You did say you were going to read my erotic novel, right? How often? How many times a week?"
"T-that..."
I knew it was a cruel and tactless question.
Still, half of the reason I asked was genuine curiosity, and the other half was meant to tease her.
"Tell me, Nii-chan. I want to know everything about my younger sister."
"Onii-sama... Yes, understood. My younger sister... is absolutely obedient to whatever you say..."
I can't help but feel that's a bit too idealized. Does Kotoha-chan have a thing for sibling-themed stories?
While I'm lost in these thoughts, Kotoha-chan seems to muster up all her courage... but it's still embarrassing for her, judging by her barely audible reply.
"...About nine times a week. Once a day on weekdays, and... twice on weekends. I'm so ashamed to be such a lewd girl..."
"Nine times?"
Honestly, that's more than I expected. It might even be more than me.
If Kotoha has this frequency, I wonder what Shino's like. Or maybe her masturbation frequency has decreased because of sex?
The conversation reminded me of something Shino had said: that she probably masturbates more intensely than most people. Once the thought popped into my head, I couldn't help but wonder what that would look like.
Well, to be honest, I don't really understand what girls' masturbation looks like in the first place, so I can't judge whether hers would be intense or not. But suddenly, I was intensely curious.
"Kotoha-chan, let me see you masturbate."
"...Huh? Onii-sama... you can't be serious!"
"I'm serious. I want to see how you masturbate, Kotoha. You'll calm my arousal, right?"
When I asked, Kotoha-chan lowered her head and remained silent for a long moment.
This is probably a lost cause, huh? It's understandable. Having someone else watch you masturbate would be mortifyingly embarrassing. Only someone like Shino, who could compartmentalize it as just another game and happily play along, would be willing to do something like that.
It might have been a little cruel to Kotoha-chan, who blushes just from taking off her clothes. I was about to hastily take it back when...
"There's no reason I shouldn't... If my hands can reach your wish, Onii-sama, it's a younger sister's duty to grant it."
Kotoha-chan nodded firmly.
She stood up with trembling steps, then collapsed back onto the floor, spreading her legs wide apart with a clap.
Her shaved crotch was already slick with love juice, looking as if she'd just finished masturbating... But this was all due to Kotoha-chan's anticipation—and perhaps my teasing.
"Then, I shall... demonstrate Kotoha's masturbation... I don't know if you'll be satisfied, but I'll do my utmost. First, I knead and twist the tip... twirl, twirl... like this..."
Kotoha-chan pinched her nipples between her fingers and began to knead and twist them, just as she described.
At first, her fingers moved in small, circular motions, rubbing against her nipples. But soon, her movements grew larger.
She twisted, squeezed, and stretched... As she continued, the sounds she let out grew rougher.
"Then... the lower part of my stomach starts to feel warm and tingly... and I get this urgent need to rub them. That's when... usually, my pussy starts getting wet... ♡ I put my fingers in and keep stirring until my underwear is all soggy... ♡"
"You always do it while wearing your underwear?"
"Ah... y-yes. That's right."
For a moment, Kotoha-chan's eyes widened. She probably realized she'd slipped up. But it was too late.
"Then why aren't you wearing them today?"
"That... um... I forgot to put them on, and now that I've come to see you, Onii-sama... It's so embarrassing."
Kotoha-chan's gaze darted around awkwardly. I suspect the real reason was the same as Shino's. In other words, she came to see me with the intention of doing it from the start. Just like my older sister who refuses to wear underwear when she wants to get laid.
"L-let me continue..."
As if cutting off the conversation, Kotoha-chan slowly slipped her fingers inside herself. Soon, the lewd squelching sounds of wetness began to echo.
Before my eyes, a prim and proper Yamato Nadeshiko was performing what was probably, by most standards, an intensely vigorous masturbation.
The impact was overwhelming.
A girl as beautiful as Kotoha-chan must be incredibly popular. There are probably tons of boys in her class, among her peers, and even among the upper and lower years who are in love with her.
The sense of superiority I feel, making a girl like that—someone who looks up to me as her older brother—put on a masturbation show for me... It sends shivers down my spine. My tastes are surprisingly depraved.
"With my fingers, making that schlick schlick sound... I push them in about halfway, then bend them here... mmh... And when I rub the inner walls of my pussy on the side near my belly... my whole body starts tingling... mmh..."
From the outside, the finger thrusting into her closed slit doesn't seem to move much, but inside, it must be wildly thrashing around. The lewd schlick schlick echoes through the room, and with each sound, a thick, slightly cloudy honey oozes slowly from her slit.
"What are you thinking about, Kotoha-chan? If you're going to masturbate, you need some kind of stimulation, right?"
"Ugh... I'm thinking about... Onii-sama...♡ My brother couldn't resist watching me pleasuring myself, so he pinned me down... Ahh... and... devoured me... no, ravaged me completely... That's what I'm imagining...♡ Overpowered by his large body... my cock being twisted and sucked... being thoroughly violated inside and out... that's what I'm thinking about...!"
She confessed this with a wistful sigh, her eyes downcast, her words utterly raw.
I let my guard down. Those words made my heart skip a beat.
As her body writhed in response to the fingers digging into her pussy and pinching her nipples, she claimed in her mind that I was the one fucking her.
I suppress the overwhelming urge to push her down right now. It would be undignified and unbecoming to interrupt something I've set in motion because I can't restrain myself.
I tell myself that understanding a girl's masturbation technique will be absolutely essential for my next creative project.
"Ah! Why...? ♡ When Onii-sama's eyes are on me... It feels so much better than usual... It's scary... Haaah... My body's going all floaty... Eep! And then you squeeze my nipple so hard... Too much...! Nnnnnngh...♡"
Suddenly, the moment Kotoha-chan curls up tightly, her body jerks violently, and droplets spray from her pussy. She's "shot her tide," I suppose. Witnessing this for the first time, I feel a strange sense of awe. In other words, this marks the end of her masturbation... Kotoha has come.
This might be the first time I've clearly witnessed a woman's moment of climax.
Though I've been intimate with Shino multiple times, I've never actually seen this. When we're joined as one, I'm too preoccupied myself.
"Haa... I always... comfort myself like this..." Kotoha murmured, her voice muffled as she gasped for breath. After a moment, she slowly sat up and gazed at me. Her eyes were glistening, and her cheeks flushed crimson.
"Onii-sama... do you find Kotoha's spectacle satisfactory? Or... are you disappointed? Disappointed that I'm such a lewd woman? A shameless woman who becomes even more aroused when watched by you, feeding off your presence?"
"No, not at all. I actually love naughty girls."
If I didn't like naughty girls, why would I write erotic novels?
With that declaration, Kotoha-chan tightened her expression, sitting upright in seiza on the floor. She placed three fingers on the ground and bowed deeply.
"Onii-sama... Kotoha has lost."
Her defeat was announced in a voice that was quiet, yet sweet and fervent.
"Kotoha is... vulgar, indecent, a woman. Today, I came to Onii-sama because I wanted him to defile me."
"...I kind of figured that was the case."
"I thought you might think that, Onii-sama."
Tsk. Her soft chuckle sent a shiver down my spine, like goosebumps from a tickle.
"Onee-sama... Onee-sama tells me everything. She shares everything I ask about—about Onii-sama, her service duties... the pleasure of being pinned down and ravaged roughly. Kotoha is so jealous, so envious... I can't stand it anymore. But there's no one I could ever ask to do such things with me. The only one who might pay attention to me—the one I've heard Onee-sama call her Master—in other words, Onii-sama."
Kotoha-chan's usually refined features now wore an unnerving, seductive expression. Her eyes were narrowed, and she licked her lips, extending the tip of her tongue slightly. She radiated eager anticipation.
What should I think about this? The first thought that came to mind was: What the hell is she being fed? Did he really bare all his sexual experiences to his younger sister?
They seem close, given how they recommend erotic novels to each other... but what's going on with their ethics and chastity?
"Onii-sama, Kotoha... I can't hold back anymore. Please... please take Kotoha's pussy... make it yours. Use it whenever you want, however you want...♡"
In short, what I can say is... Kotoha-chan, just like Shino, has a bit of a warped sense of ethics.
And I really can't hold back anymore.
As I reach for my zipper, the girl's gaze follows my hand downward.
Pulling out my cock under her watchful gaze, I hear her gasp sharply.
"Ah, ah... Onii-sama... it's so big...♡ Aah, I'm about to be violated... raped... by you...♡ I'll offer my virginity... be trained... until I can't live without you...♡"
Kotoha-chan covered her mouth with both hands and murmured dreamily.
Since both parties consented, this should be considered consensual, yet it seemed she preferred being taken by force.
Her murmur sounded as if it ended with a heart symbol, a sweet voice devoid of any fear, sadness, or anger.
Judging by her words, she seemed to be a virgin... What a wild imagination she has—I'd had a similar feeling about Shino before.
"...How magnificent... It's so unsettling, I can't believe it's just a part of the human body, yet I can't tear my eyes away... It shouldn't be fragrant, yet I can't stop taking deep breaths... I might fall in love with it even before I touch it...♡"
After sliding down from my body, Kotoha-chan slowly leaned her face toward my cock and gently wrapped her hands around the base.
Kotoha-chan sniffed the air, her nose twitching as she caught the scent. Then she rubbed her cheek against the glans.
"Mmmn, nchuu nchuu... I'm doing it..."
"Kotoha-chan's skin is so soft and squishy."
Her fair skin was fine-grained, smooth, firm, and felt wonderful.
Kotoha continued cheek-rubbing until pre-cum began to stick to her cheek, making a sticky, frothy thread that stretched when she finally pulled away.
"Please, feel free to call me Kotoha, Onii-sama. I prefer it—"
"It excites you?"
"—Yes. As expected of you, Onii-sama. You always understand so easily what pleases me."
I meant it as a light joke, but she confirmed it.
"Onii-sama... As a gesture of my complete devotion, submission, and servitude... I offer you Kotoha's first kiss to Cock-sama. Please accept it..."
Kotoha's lips softened slightly, her unhidden ecstasy mingling with her vow. She wrapped both hands around the base of my cock, closed her eyes, and pursed her lips into a sharp point before gently touching the tip of the glans with a soft chup.
Her lips parted, sliding over the exposed flesh until the entire glans was swallowed deep into her small mouth.
Her mouth was hot and slick with accumulated saliva. Kotoha pursed her lips, hooking them around the glans's ridge, and drew back with a strong suck.
Chup, chup. Chuup
The moment it finished, her mouth began to move rhythmically, its shape shifting. The stimulation was random, its pace varying, sending a sweet tingling down my spine.
This pleasure was amplified by the sight of the undeniably mature girl crouching between my legs, taking my cock into her mouth and looking up at me. It was too much.
"Squelch, slurp... Does that feel good?"
"Yes, it feels amazing..."
"Then... I'm glad... schloop♡"
Kotoha, tasting her first cock, moved her tongue slowly and deliberately, as if savoring every inch. Her tongue traced the entire glans before she pursed her lips and drew it in with a final, confirming suck. She repeatedly inserted the tip of her tongue into the ridge of the underside, a sensitive area rarely stimulated during regular sex, sending electric jolts through me.
Her inexperienced yet meticulous, almost obsessive attack made me wonder if she was mentally mapping out the entire structure of my cock.
Kotoha focused intently on my cock, but occasionally glanced up at me with a coy look. In that moment, I glimpsed her unwavering devotion and plucky spirit.
"Kotoha... Do you really like my dick that much?"
"Y-yes...♡ It's so hot, so soft... It tastes so naughty. The lewd smell is invading my nose... It feels like my brain is being ravaged by your cock, Lord Cock♡"
"If that feels good, then it just proves you've got a natural inclination for lewdness, Kotoha."
"No, that's not it,♡" she protested. "It's your cock, Onii-sama... it's so bad...♡ Because your cock is so naughty, it's making me naughty too...♡"
"You're not being honest, and you're trying to shift the blame. You naughty girl deserves punishment. Now!"
"Mmph!"
When I thrust my hips forward slightly, the glans must have reached the back of her throat, eliciting a muffled shriek from Kotoha.
"I'm sorry, hyah! I, Kotoha, am a lewd girl who's fallen in love with my first raw cock-sama! I'm such a nasty girl that fellatio alone can melt my pussy into a puddle! So please grant me your semen! Please treat me to your runny semen in my mouth while I suck your cock-sama!"
Her swift transition from apology to begging struck me as rather resilient.
But Kotoha had confessed honestly, and I'd just played my whip card.
Now I had no choice but to offer her the promised reward.
"Gup! Jupuu! Jup! Gup! Semen! Zaahmen!"
Kotoha pursed her lips and cheeks, vigorously bobbing her head up and down. The saliva coating her mouth frothed as she vigorously rubbed the glans and shaft against the inside of her lips and cheeks.
Kotoha's earnest demand for semen, delivered through her mouth.
The thought that the younger girl I'd met just hours ago was now contorting her face to suck my cock, desperate for my semen, made me unbearably aroused.
A thick, black desire welled up inside me, directed solely at Kotoha.
It was...
"Just as you wished, I'm going to make that little mouth of yours my own. Let's go, Kotoha!"
"Mmm... ngh?! Nnnn... nmb... nmuuuuuuuuuuuuu!"
Shlurp, shlurp, shlurp, shlurp, shlurp, shlurp!
I thrust my hips forward again, forcing Kotoha's small mouth as far down onto my glans as it could go, and released my semen inside her.
Her face was crimson, but she showed no sign of discomfort, her cheeks drawn up in a delighted smile. When I tried to pull my cock from her mouth, her greedy lips pursed around it, sucking up every last drop of semen.
Squelch, squelch... gulp, nch... pfft... Thank you for the meal, Sama♡
This was likely Kotoha's first taste of semen, yet she didn't spit it out. After chewing it over, she swallowed it all with a satisfied gulp.
Though I hadn't asked, she opened her mouth wide, showing me that not a drop remained.
Her obedient submission was utterly adorable.
"Onii-sama... please, come inside me...♡"
Kotoha lay on her back on the bed, spreading her legs wide to display her glistening slit.
I succumbed to the temptation, covering her body with mine, but paused.
"You're sure this is what you want?"
"Yes. I want to offer my virginity to you, Onii-sama, and become your woman. That... is Kotoha's wish."
Having confirmed her resolve, I steeled myself.
I pressed my glans against her tightly closed folds, then—dropped my hips.
"Nngh... Ugh, fuuuu... Ah, uuuuu!"
Her vagina, narrower than I'd expected from her slender frame, was uniformly tight, squeezing my shaft with relentless pressure. If she hadn't stored enough honey to overflow, even the glans might not have fit. Naturally, insertion sent her secretions spraying, coating the sheets in a sticky sheen. Mixed in was a faint redness, a testament to Kotoha's newfound maturity as a woman.
Her narrow, elastic pussy rubbed against my cock with every twitch, each clit, clit friction stoking my desire to ejaculate.
Having already climaxed once, her body was now hypersensitive. I wouldn't last much longer.
"Ah, Onii-sama... I'm no longer a virgin, am I? Because you... you desired me..." Kotoha sobbed with joy, her tears mingling with delighted laughter.
Adorable. There was no other word for it—her tearful smile was utterly endearing.
"Huff, haaah... Your cock, Onii-sama... it's inside me... my pussy... being stretched... it hurts... but it feels so good...♡"
"Hurts? Feels good? Which is it?"
"B-both... both! Being skewered by your cock... it hurts, but it feels amazing! Why... why is this so different from... masturbation? It's like a whole other thing! Ugh!"
Even the slightest movement of my cock made Kotoha's slender body jerk violently.
"Ugh... Inside me... it's so hot...♡ I can feel the shape of your cock...♡"
Her expression remained a soft smile. I took Kotoha's hand, intertwining our fingers. Her delicate fingers trembled for a moment before gripping mine tightly.
Moved by her bravery, I thrust deeper.
"Ugh?!"
Kotoha's eyes widened dramatically, their topaz color identical to her older sister's.
Her vaginal muscles seemed startled too, coiling and clenching around me like a powerful embrace. With our bodies pressed so intimately together, even the slightest movement made my glans rub against her folds, intensifying my pleasure.
"Hah... Haaah...♡"
"Kotoha, are you okay with moving?"
"Yes... Please... squeeze all your thick, creamy sperm into my uterus...♡"
Her voice was dazed, as if drowning in pleasure and her own words.
This time, I pulled back sharply before thrusting in again.
The vivid sensation of my cock sliding against her felt so intense, as if the very stimulation was etching itself into my brain.
"Ugh, this is... this is intense...! Inside Kotoha, it feels so good...!"
"Mmmgh, ahnn! Hnn, nnn, ahhh! Every time you push deeper into my uterus... niih! The pleasure... it's exploding...! Ahf, nnn... my mind's about to... shatter...! Exploding... nnn! I can't think of anything but this... this... I'm losing my... my maidenhood...! I'm... I'm falling...!"
Her lips parted further, her gaze wavering wildly with each thrust.
I felt Kotoha's skin all over my body—smooth and slightly damp with sweat.
I stopped moving for a moment, savoring the sensation of her skin.
"Are you okay? Should we stop?"
I already knew the answer, but I asked anyway. I wanted to tease her a little.
Kotoha, her face twisted in pleasure, hesitated a beat before tightening her features and shaking her head vigorously.
"No way... That's impossible...♡ My body—Kotoha's most precious place—is itching...♡ It's begging for more pleasure...♡ If you stop me now, I'll lose my mind...♡"
Her expression softened with each word she uttered. Did the filthy words she spoke actually make her feel good? If so, she might share her older sister's masochistic tendencies. This girl might be hiding some truly remarkable potential.
Now what should I do? I thought, deliberately dragging it out further as I averted my gaze from her face. Kotoha's slender, pale neck looked strangely alluring. I felt an overwhelming urge to sink my teeth into the soft-looking side of it. She'd probably give me that cute little voice of hers—no, what am I thinking? Am I drowning in Kotoha's charm?
Feeling a little disgusted with myself, I was startled when Kotoha suddenly shook off my clasped hands. Her grip tightened on my head, forcing me to face her.
"Onii-sama... doesn't it feel good...? I'm so sorry... I'll learn how to please you properly from now on... So please... just like placing a wilted flower in a vase... keep Kotoha by your side, Onii-sama..."
Kotoha seemed to have misunderstood my impatience. The moment I realized this, heat surged to my head.
Her expression, a mix of anxiety and restlessness, revealed her desperate plea for release.
In response, I thrust my hips with even greater force than before, driving my cock deep into her with all my might. The tip struck her uterus.
"Ugh... Gah—!"
Her moan sounded almost like a scream, a raw cry of pleasure. Her vaginal muscles spasmed, clamping down on my cock. It was an orgasm so intense it was hard to ignore—Kotoha had reached her limit with a single thrust.
"It's okay, Kotoha. Your pussy feels so good, you couldn't even make a sound."
"Onii-sama Gouji... Will you keep Kotoha by your side?"
"Of course. You can stay as long as you want, Kotoha."
"Mmm...!"
Kotoha's voice melted into a syrupy sweetness, her tone more than enough to stir arousal.
Cute. Sexy... I want to fuck her.
The throbbing cock, fueled by intense lust, grew even harder, pistoning in and out, scraping against the vaginal walls and thrusting into her uterus.
"Ah...! Wait, Onii-sama! I'm coming! I just came! Please, forgive me...!"
"Should I stop?"
"Waaah... Don't stop! More... Give me more! I'm going to lose it! So... harder... drive me crazy... love me... please...!"
The uneven vaginal walls crushed around the shaft, grinding against the mucous membrane on thrusts, and snagged on the glans as it withdrew.
I was completely spent.
With one final, forceful thrust, I reached my limit.
"Alright, Kotoha... I'm gonna come..."
"Aah! I can feel your cock, Lord Cock, trembling... I'm... I'm coming again... I'm cumming!"
Bjuuk! Dobiuruburubjuuk!
I couldn't tell if it was my body or Kotoha's that was shaking. The pent-up filth erupted as a white torrent, flooding into Kotoha.
With each spurt, Kotoha's body jerked, her arms tightening around me in a desperate embrace.
"Ah, ah, aah... So hot... So warm... ♡"
Released, released, released.
Once every last drop had emptied into her, a crushing wave of exhaustion washed over me.
I tried to hold on, but it was useless. My body collapsed onto Kotoha's.
Kotoha should have been utterly exhausted, yet her unsteady hand reached around to cradle my neck.
"Kotoha."
"Yes... What is it, Big Brother...?"
"I'm so glad."
"Really...? That's wonderful... Kotoha is so happy... Please... stay by my side... for a long time..."
She answered with a gentle smile, then closed her eyes and immediately began snoring. My older sister has always been a fast sleeper, but Kotoha must be utterly drained, both physically and mentally.
She probably mustered all her courage to visit my home and ended up having her first sexual encounter.
As I draped a blanket over her to prevent her from catching a cold, the bedroom door creaked open.
"How long have you been watching?"
"Oh? You're not surprised? Probably from around the part where I said I love naughty girls."
Of all places, it had to be here.
There was no need to wonder who it was. So, I voiced my words, waited for a response, and then turned around.
A slender, tall figure, hair almost reaching the waist, glossy black—also known as the color of a crow's wet feathers.
As expected, Tsurugi Shino stood there with an expression as if it were the most natural thing in the world.
"Kotoha came here in the first place because you blew my cover, right, Shino? And you even exposed my sex life in detail... Even for you, there must be a good reason for that, right?"
"Yes, that's right. I'm sorry, Gouji-kun. I shouldn't have just thrust this on you without explaining. And thank you. Thank you for taking Kotoha in."
Shino bowed her head toward me once, then settled down beside the bed to gaze at Kotoha's sleeping face.
Soft breathing, a peaceful expression.
With a soft sigh of relief, Shino began brushing Kotoha's long bangs.
"Ever since she was little... she's always been the type to follow behind me. She always says it's fine to go second, no matter what we're doing. Even when we take baths or go out together, she refuses to step out of the door ahead of me. While her politeness is lovely... it's a little worrying. If she doesn't learn to assert herself, won't she end up getting taken advantage of by some scoundrel?"
"...Well, given the circumstances, this moment seems about right."
"You don't need to worry about me. I trust you completely."
How can she say that so confidently? Doesn't she trust me more than she trusts herself? I took a huge risk—did I just get away with it?
The flood of questions threatening to overwhelm me was held back by the expression on Shino's face as she gazed at the sleeping Kotoha.
"I think this was the first time. The first time someone asked Kotoha for something. The first time she asserted herself for her own desires. She wanted to see you. At her age, it must have taken a lot of courage to be so selfish. Heh heh."
She looked so calm. Without her usual aloof demeanor in class or the mischievous smirk she often wore when talking to me, her face was filled with warmth—tenderness, affection. Seeing it alone made it clear how close the sisters were.
"So, as an older sister, you wanted to grant your younger sister's wish... Or was your goal to make Kotoha act so selfishly?"
"Well, who knows? I just wanted to experience being cuckolded once. That's all, I'm sure. Watching you and Kotoha have sex gave me a bitter kind of arousal. It's a shame I couldn't see it on DVD."
"It's not funny."
Tsurugi Shino isn't straightforward.
When she doesn't clearly deny something, when she deflects with a vague response, or when she cracks a joke that leaves you wondering whether you should laugh or not, it usually means she's tacitly agreeing.
Shino paused mid-brush, turned around, and gave me her usual smile—a faintly relaxed expression that, thanks to her sharp eyes, looks more assertive than it feels.
"Well, I wasn't particularly worried. You're the type of person who accepts a sudden 'let's have sex' proposal, after all. I thought you'd take Kotoha's situation in stride too."
"Take it in stride, huh? If you could have sex with someone as beautiful as Shino, even if there were some red flags, wouldn't most people still agree? It's not about being magnanimous."
"I wish you'd accept a compliment once in a while. At least, I don't think many people would go along with that kind of approach. Most would probably be grossed out first."
Then why did she have to ask like that? I was confused too. So why did I still want to do it with Shino?
...Stop thinking. There are more important things to consider.
"Regardless of our suspicions, what are you planning to do now, involving your younger sister? I don't like saying it this way, but now that we've done it once, we can't just end it there, can we?"
"That's not possible. This girl seems to have taken quite a liking to you. And don't worry. I've already thought things through."
Shino stood up, smiling slyly as she met my gaze.
Arms crossed, she looked smug, almost teasingly, and slowly parted her lips—
"I want to try a sister bowl."
That's usually something a guy would say.