My Little Sister Is the Best F*p Material - Volume 5 Chapter 1: Sisterly Love and Romantic Love

Volume 5 Chapter 1: Sisterly Love and Romantic Love

When I woke up in the morning, my younger sister, Miyu, was sleeping beside me. Over the past few months leading up to summer vacation, she had repeatedly drunk the semen I’d ejaculated during masturbation, and eventually even gave me blowjobs. She’s my real sister.

Miyu, who usually keeps a cool, distant expression that wards off men, has a face in her sleep that’s as adorable as a princess. Her petite, doll-like appearance contrasts with her large breasts, which even when lying down create noticeable bulges in her pajamas. Her long, glossy straight hair, reaching down to her waist, makes her look like a heroine who’s stepped out of a screen.

The reason why my cute sister started catching my ejaculate in her mouth remains a mystery. As long as I could ejaculate comfortably, I didn’t question it. However, as I began thinking about getting a girlfriend, my feelings for my sister became more complicated. Miyu, too, started showing what seemed like affection toward me. Our relationship, which had been casual, now needed a clear boundary.

Miyu said she wanted to have an important talk with me, but apparently, there were things she needed to explain in order. That’s why we’re sharing a bed for the third time.

(It’s already ten o’clock… I’ve slept way too much…)

I’m the type who wakes up with the morning sun, so I usually leave the curtains slightly open. But last night, Miyu insisted on closing them tightly, leaving the room in complete darkness. Because of this, the time on the clock doesn’t match my sense of time.

Miyu is still sleeping peacefully. On her days off, she probably always blocks out the sunlight and sleeps in like this. But considering our usual weekend breakfast times, she actually gets up early even on her days off.

“Miyu, it’s already ten. Aren’t you going to wake up?”

As Miyu sleeps beside me, her right hand is holding my hand, which rests on her chest. I’m tempted to grope her chest to wake her up, but I resist the urge. No matter how affectionate her actions seem, I shouldn’t overstep.

“Mm…”

Miyu slowly opens her heavy eyelids, glancing around the room with half-closed eyes. Reassured by the darkness, she relaxes back into the bed, returning to her sleepy state.

“It’s still night, Onii-chan…”

“No, Miyu, you’re the one who closed the curtains. Look at the clock.”

“Mmm… It’s still night, I tell you.”

Miyu wriggles closer, her breasts pressing against me as she snuggles up. She’s clearly reluctant to wake up. If we don’t hurry, we’ll miss lunch, and our carefully planned meal schedule will fall apart on the very first day. But how long will this “night” last? …Part of me wishes it could go on forever.

“If you keep being this clingy, I might take it the wrong way.”

I wrap my free arm around her, and Miyu doesn’t resist. Instead, she blushes faintly as the embrace tightens. In this closeness, she doesn’t try to adjust her position. Instead, she takes my hand, still resting on her chest, and holds it tightly.

With her acting like this, it’s hard to avoid misunderstandings—or so I thought. But unfortunately, it’s morning.

“Miyu, you’re really not a morning person, huh?”

Right after waking up, Miyu goes into “clingy mode.” Maybe she’s like this even when she sleeps over at friends’ houses. So, her behavior might not be because she likes me specifically.

“Mmm…”

But this morning, Miyu sits up, looking slightly annoyed. Her eyes are wide open, and her expression is sharp.

“I’m wide awake now.”

It seems she wasn’t just sleepwalking. Considering her behavior toward Yamamoto-san and this closeness, it’s hard not to interpret this as a sign of affection.

“Sorry, I was just surprised.”

If only she hadn’t mentioned having an important talk or needing to explain things first, I could’ve simply been happy.

“Is it bad to snuggle when I’m awake?”

Miyu puckered her lips, creating a gap between us as she moved away, her breasts no longer pressed against me.

“W-Wait! That’s not it. I’m overjoyed whenever Miyu snuggles up to me. It’s just… with everything that’s happened…”

After her declaration of not trying too hard, Miyu’s physical affection increased. I should take her actions as genuine affection, but after what happened with Yuka, I can’t help but tense up reflexively.

“Hmm…”

Miyu rested her cheek on my palm, which she held with both hands, closing her eyes in thought. Her soft cheek feels nice.

“That’s a fair point.”

When our eyes met, Miyu’s expression was calm. For once, my opinion was accepted without resistance.

“Would it be disrespectful to doubt you?”

If I could openly express my love for Miyu, I’d do it right now. But I want to make sure it’s for her own good, and that’s why I want to be with her.

“This distance is fine.”

With a peaceful expression, Miyu settled back into sleep, maintaining a slight gap between us. I don’t understand her intentions, but this space between us was just filled moments ago.

If I believe Miyu wants physical contact with me, she shouldn’t mind me touching her. No, to be honest with myself, Miyu should be happy when I touch her.

“I can trust you, right, Miyu?”

Seeing Miyu’s obvious affection, I pulled her close, our bodies pressing together. Though I’ve always loved her, this is the first time I’ve touched her with pure affection, not just lust. All my senses confirm her presence, filling me with a mix of hope and anxiety.

Miyu shifted slightly, wrapping her arms around me in return. Her partially exposed cleavage brushed against my mouth, and if I lowered my head, I could bury my face there. She then hooked her knees around my waist, tangling her legs with mine.

This is a clear yes, right? She’s allowing me to touch her.

“Miyu…”

The scent of her breasts calms me, though unfortunately, it also stirs my desire.

Men tend to get erections when relaxed. I don’t want to ruin the mood, but with her breasts right there, controlling my arousal is impossible.

“I should apologize in advance.”

“It’s okay. You’re obviously getting hard, right?”

Miyu continued after I spoke. She knows me too well, and she’s no longer upset about my erections. Reassured, my member swelled rapidly, reaching full hardness in seconds.

“Ah… Onii-chan… there…”

Miyu shifted at the touch of my hardened shaft. With one leg hooked around my waist, my erection, trying to swell upward, got caught in her thigh.

“Can I press it against you…?”

“No, that’s not allowed. My panties are already soaked. I don’t want to stain my pajamas.”

“Oh… right.”

“Yeah.”

Miyu nodded, her face flushed. Her privates were so wet that pressing against her might make her juices seep through her panties. I felt guilty, thinking that if she hadn’t been drinking my semen, she might not be this sensitive.

“Do you want to ejaculate?”

Miyu whispered from close range. While I genuinely felt sorry for making her drink my semen, I couldn’t resist when she asked like that.

“I do.”

As soon as I answered, Miyu moved to my feet, removed my pants, and pulled the blanket over her head.

“Don’t peek until I’m done.”

Then, she lifted the blanket to my waist, completely covering herself. In the darkness beneath the blanket, her hand touched my penis. Not knowing what she’d do next, I tensed up.

Teasingly, Miyu kissed my lower body repeatedly, until finally, I felt a wet sensation against my shaft.

“Ah…!”

Starting from the base, Miyu licked up my penis. She traced the underside of my shaft, rubbed the head with her lips, and sucked the entire length. Hidden from my view, her bold oral skills were more intense than usual.

“Haa… ahh…! Miyu… that’s amazing…!”

After a round of deep throating, she switched to licking, her tongue trailing down to my scrotum. When her tongue brushed my balls,

“Ahh! That’s… too much…!”

As Miyu licked my testicles, I felt pre-cum leak from the tip. If what Yamamoto-san said about licking the balls increasing semen production is true, my body couldn’t help but react to Miyu’s touch.

Sensing my pleasure, Miyu continued licking my balls for a while, occasionally stroking my shaft to keep me from climaxing. She licked from my groin to my buttocks, her tongue exploring every inch.

Since I can’t see, she’s giving me this level of service, but I want to see her face as she does these naughty things. Despite Miyu’s erotic actions, all I can see is the blanket bulging and squirming above me.

I promised not to lift the blanket until she’s done, but I desperately want to see Miyu sucking me off. Torn between these conflicting desires, her intense fellatio finally pushed me to the brink. I had no choice but to release this frustration through ejaculation.

Lying on my back in the quiet room, I stared at the ceiling. Through the blanket, faint sounds of her mouth at work reached my ears, blending into the serene morning air of summer vacation.

There’s no naked girl in sight, no moans to hear. Yet, precisely because of that, the act happening under this blanket feels obscenely intimate. My testicles, stimulated by her earlier licking, sent a surge of semen upward, leaving me no time to hold back.

“Miyu, I’m… about to come…!”

Speaking through the blanket, I unleashed my load into Miyu’s waiting mouth in the darkness.

“Ahh… aah… Miyu…!”

Trusting her to swallow it all, I released a massive amount of semen. As it shot from the tip, my entire shaft was enveloped in a sticky warmth, confirming through my skin that Miyu was still sucking me off.

“Ah… guaah… haa… Miyu, I’m… done now…!”

Even after I finished, Miyu, still holding my penis in her mouth, immediately resumed her actions. I’d already released what was built up, and I thought we were done for the morning.

Miyu has a bad habit of forcing me to climax repeatedly. But this was different—it felt mechanical, a relentless pursuit of orgasm. Even after I came, the sucking continued, and I wondered if she could hear me, so I lifted the blanket. What I saw was—

“Hmm… nnn… fuaa… chubu… nchu, juru, jubu…! Nmu… haa… chupa… chu… muchu…”

There she was, completely absorbed in sucking me off, unaware that I’d lifted the blanket. Worse, her right hand was between her legs, moving in sync with her mouth.

“M-Miyu…!? Ugh, ahh… I just came, and you’re going so hard…!!”

Her fellatio grew more intense, the sounds of her saliva slurping audible. I’d heard that swallowing my semen excites her, but I never expected Miyu to lose control like this.

Unaware that I’d seen her, Miyu’s shameless, lustful technique aimed to make me climax again. With her natural talent, which even seduces women, and her mastery of male pleasure, I couldn’t last a minute against her skill, now unbound by shame.

“Miyu…! Ahh… I’m… coming again…!!”

Finally hearing me, Miyu stopped, and I released my second load. Throb after throb, an even greater amount of semen spilled into her mouth, which she tightly sealed with her lips. Simultaneously, Miyu’s body stiffened.

Even as she climaxed, Miyu quickly withdrew her hand from between her legs, using both hands to support my penis, determined not to let a drop escape. Battling the spasms in her vagina, she waited until our orgasms subsided before slowly swallowing the semen.

“Miyu… Thank you.”

Unsure of what else to say, I muttered my gratitude. Emerging from the blanket, Miyu crawled on all fours, pinning my hands down. Her palms, slick with her arousal, gripped my wrists tightly, cutting off circulation.

Miyu’s eyes were vacant, her irises seemingly vanished. Panting shallowly, she gazed down at me, her focus unsteady.

“Miyu…!?”

Her arousal dripped onto my penis—not in drops, but in a steady stream, like honey coating my shaft. Despite our session being over.

I understood what this meant. Miyu, straddling my still-hard penis, was preparing for sex without a condom. This wasn’t about pleasure; for some reason, Miyu intended to pin me down and conceive a child. In short, it was reverse rape.

“M-Miyu, wait!”

Physically, I’m stronger. I could push her off, but I couldn’t bring myself to be rough with her.

“Having a child now is too soon, right? We need money, and it’s better to wait until after we graduate.”

I needed to snap her out of this. Before my primal instincts, whispering to take her, could overpower me, I had to reach her.

“…Fuu.”

Hearing my voice, Miyu’s breathing steadied. Color returned to her face, and her eyes focused.

“I told you not to peek.”

“S-Sorry…! I thought ‘until it’s over’ meant until I came.”

“I guess my phrasing was ambiguous.”

Miyu grabbed some tissues, handing half to me. Like cleaning up after using the toilet, she tried to wipe herself, realizing how awkward it looked, and covered herself with the blanket to clean up.

“Shall we have breakfast?”

Without explaining her earlier actions, and with no opportunity for me to ask, I silently followed Miyu downstairs.

Breakfast was banana yogurt. In the kitchen, Miyu peeled a banana, sliced it with a knife—saku, saku—into rounds. Given what just happened, my penis shriveled completely.

“Hey…”

We sat across from each other at the table, as usual, and began eating. The doubts swirling in my mind had reached a point where I couldn’t ignore them any longer.

“Miyu… you’re not… uncomfortable with giving me blowjobs, are you…?”

She’d refused so many times before, yet this morning, she did it without hesitation. And it wasn’t even at my request—she took the initiative.

Looking back, it’s not just blowjobs. Handjobs, physical intimacy—she used to reject them all, but after we crossed that line, she’s been accepting my requests without resistance.

Maybe it was just a matter of trying it and liking it. But then, what did she mean when she said, “We’re siblings, so I won’t do it”? Until I understood that, I couldn’t be sure if it was okay to ask her for blowjobs again.

If it’s not a burden for her, I want her to give me blowjobs. There’s nothing more sensual in this world than Miyu’s blowjobs. They’re my life.

“I understand what you’re saying… though I sense some malicious intent too.”

Miyu scooped up some banana yogurt with her spoon and ate it. I might have been a bit too intense. I need to calm down.

“But the answer is, as a sister, I have to say there’s resistance.”

“It didn’t seem like there was much resistance…”

“That’s the problem.”

Miyu’s tone sharpened as she declared firmly:

“Both socially and genetically, it’s wrong for me to accept you sexually. It goes against our instincts as siblings.”

She explained that siblings being attracted to each other is against both social norms and biological design. I’d thought about this too. The discomfort I felt when I was with Sachiko. I saw Miyu as a woman, but Sachiko felt like a sister.

Human instincts, influenced by scent and other senses, are designed to prevent attraction to close relatives. This ensures genetic diversity.

“But you can accept being intimate with me?”

“Yes, that’s right.”

I remembered her saying something about drinking my semen: “I have thoughts, but I don’t feel anything.” So, even though she knows it’s wrong, her body doesn’t resist.

“Where does that come from…?”

“What do you mean?”

“Have you ever felt uncomfortable with drinking it or touching me?”

“No.”

“Really!?”

That’s a huge revelation. It implies that all her previous refusals were due to societal concerns, not personal discomfort.

“Following that logic, if you stopped worrying about us being siblings…”

“Yes?”

“If I asked for sex, would you do it?”

“Probably.”

Miyu answered casually. Is she serious? I hope there’s nothing strange in this yogurt.

“To return to the earlier point: I was uncomfortable with giving you blowjobs because of my role as your sister. And I didn’t want to admit that I felt no aversion to it.”

Her decision to be intimate with me depended on whether she could accept herself for having no resistance to sexual acts with her brother. In the end, every intimate moment we’d shared, under the guise of accidents, had been steps toward overcoming that mental barrier.

“When you sighed during the blowjob yesterday, was it because you realized you had no issue with sucking your brother’s penis?”

Miyu nodded in confirmation.

“Even when I first touched you with my hand.”

“In the bathroom?”

“Yeah. It wasn’t unpleasant. After experiencing it once, the aversion… well, you know.”

That explained why she became more open to physical intimacy after the bathroom incident. Her “I’ve had enough” comment wasn’t about being tired of taking care of me, but about giving up on denying her sexual interest in her brother—her first “not trying too hard” declaration.

“So, blowjobs are… okay now?”

“Are you asking about the sexual acts I’ll perform on your body from now on?”

“W-Well, yes.”

Why does she have to phrase it like that?

“If you want me to, I’ll do it anytime.”

Miyu calmly took another spoonful of banana yogurt. The blowjobs she’d refused so strongly were now readily offered. While the issue of us being siblings remains unresolved, I should at least be grateful that she’ll continue giving me blowjobs.

“But if you had no resistance, why did you get genuinely angry sometimes?”

“Because you were about to stain my clothes.”

“My apologies.”

Apparently, there are some non-negotiables. Given her love for cosplay and sewing, I’ll have to be more careful about that in the future.

During summer vacation, with our parents away, Miyu and I were alone in the house. The only sounds were motorcycles passing through the neighborhood. I played games in preparation for an offline meetup, aware of Miyu’s presence in the next room. I recalled her embarrassed expression as she sucked my penis, heightening my anticipation for our next intimate moment.

When I discovered Miyu’s habit of using her lolita cosplay for masturbation, I forcefully demanded a blowjob to dilute the strangeness of the situation. I thought she wanted me to take that role, regardless of the truth. However, while Miyu has no resistance to sucking my penis, the issue of us being siblings remains unresolved. So, I’m still unsure about her true intentions when she said she’d give me blowjobs.

Still, I felt it was okay to ask. Even though she’d always denied sexual acts between siblings, she’d been drinking my semen. There should be no issue with her giving me blowjobs. Whatever reason Miyu is about to reveal, her past actions suggest it’s rooted in affection, which I could sense.

After finishing my bath and preparing for bed, I wondered how to ask Miyu for a blowjob. She seemed intent on sleeping separately tonight. Though she said she’d do it anytime, it had only been this morning. I worried she might scold me for being too eager.

But there was a compelling reason. Just seeing her cute face doesn’t arouse me, but watching her ample breasts bounce triggers an irresistible desire. It’s Miyu’s fault for being so busty. Last year, she dressed more conservatively, but lately, she’s been wearing revealing outfits at home, making my situation dire.

Still, there’s no point in worrying. She said she’d do it, so she will. Miyu’s the type who can’t refuse after raising expectations, no matter how many times I ask.

I steeled myself, stood up, and headed to Miyu’s room. As I stepped into the hallway, I bumped into her, who was also leaving her room.

“Oh… uh… what’s up?”

“I was heading to the bathroom. Did you need something, Onii-chan?”

Miyu asked, looking puzzled. My room is closer to the stairs, so her destination could be the bathroom or downstairs. But since I was heading to her room, it was clear I had something to ask her.

Figuring she’d already guessed my intent, I decided to be straightforward.

“I was hoping you could give me a blowjob.”

“Again? After this morning…”

Miyu glared at me with a sullen expression, which, despite being the expected reaction, almost made me hard. The thought of her cold demeanor allowing me to ejaculate in her mouth was irresistible.

“Please.”

“Fine… but here?”

“Yeah, here’s good.”

I’d planned to do it in one of our rooms, but Miyu seemed surprisingly willing. I pulled down my pants, exposing my penis. Getting a blowjob in the hallway felt deliciously decadent. Miyu knelt before me, her mouth nearing my crotch. Without hesitation, she took my glans into her mouth.

“Ugh… fuu. Miyu really has no hesitation once she’s done something once…”

“Chupu… nh… well, honestly, after drinking so much of your semen, it’s not a big deal… heroro… amu… juru…”

Miyu answered matter-of-factly, ensuring her teeth didn’t touch my swelling erection by covering them with her tongue. She skillfully sucked me off.

I was the one who’d argued that if she could drink my semen, she could give me a blowjob. But with her tongue teasing the sensitive underside of my shaft, I no longer cared about the details.

“Herorero… hero, amu… chu, chupu… nnh, nfuu… nh, juppu… juru, juru, juuu…”

“Ahh… Miyu’s blowjobs are the best…”

Standing in the hallway, I had my sister sucking my penis. There were no dirty words like when Sachiko gave me head, nor the intense tongue techniques Yamamoto-san used. Just Miyu’s expressionless, steady fellatio excited me, and my shaft hardened relentlessly.

Mostly, she kept my penis in her mouth, licking it with her tongue and moving her head up and down to stroke it with her lips. Occasionally, she’d swallow her saliva with a “juru,” and as if by accident, she’d make loud sucking noises, which added a bit of spice. The rhythm was consistent, and unlike when we were in bed, she didn’t lick my balls or butt.

But it was perfect. Miyu’s blowjobs were exactly what I wanted. What excited me most was that she’d been maintaining eye contact since she started. Every time her long-lashed eyes blinked, her overwhelming cuteness made my penis throb.

“Miyu, it feels so good.”

I stroked her head gently, running my hand through her well-maintained long hair. Knowing that only I could touch her hair while she gave me a blowjob filled me with joy, making me feel like I might climax.

“Nchu, chupu… nh… you’ve been twitching since earlier. If you want to come, just do it…”

“I know, but… it feels like a waste to finish so quickly when you’re giving me such a great blowjob.”

“I’ll do it again if you want me to.”

Despite her words, Miyu didn’t intensify her efforts to make me climax quickly. She continued sucking my penis at the same steady pace. As I savored her kind words, I continued stroking her head with a sense of superiority. Somehow, I felt Miyu was enjoying it too. Though her expression remained neutral, for a fraction of a second when she closed her eyes, I sensed she was relishing my touch.

“Hey, Miyu…”

As I felt pleasure at the tip of my penis, I decided to ask her something I’d been holding back, unrelated to why she drank my semen.

“When I came back from Yamamoto-san’s place, were you happy?”

When I left for Yamamoto-san’s to become less dependent on Miyu, she’d expressed both support and loneliness. So, I wondered if she’d felt relieved that all her efforts to help me become independent had been in vain.

After my question, Miyu continued sucking my penis expressionlessly for a while, then turned bright red and pulled her mouth off with a “kyupo.”

“Is it okay to ask that while I’m sucking you?”

Her tone was mild, more exasperated than angry. It felt like she was saying, “Don’t make me answer that.”

“Like I said before, the idea of you getting a girlfriend came from me… nh… I’m not sure if I have the right to say this, but…”

Miyu gripped the base of my penis, lifted it, and flicked her tongue along the underside. Her uncharacteristically lewd gesture excited me, and she diligently licked up the pre-cum. After a while, she gently held the base of my shaft with both hands, avoiding eye contact.

“Well, I was happy.”

Her whispered admission, mixed with a smile, felt like her genuine feelings. I needed to face Miyu’s emotions honestly. It felt like a renewed commitment.

“I really need to pee, so could you finish soon?”

To hide her embarrassment, Miyu quickly took my penis back into her mouth and began sucking vigorously. Her face, flushed from shame, still met my gaze as she gave me head, making my feelings well up from below. I continued stroking her hair with my left hand, placed my right hand on her cheek, and gazed intently at her as she sucked me off.

“Fuu… ah, Miyu. I really love you.”

Confessing love while having sex with someone who isn’t even your partner is a risky move, as it could be seen as only wanting their body. But for us, being together is natural, and our feelings stem from desire. Miyu feels the same. We can’t be siblings without our physical relationship. Otherwise, we wouldn’t be doing this in the hallway.

“Machu… nh, what are you suddenly saying? Hamu, chupu, nh…”

“Because you’re so cute when you give me head. I’ve always loved you, but now I love you even more.”

The liberation of expressing my raw feelings and Miyu’s embarrassed reaction excited me to the peak. The joy of telling someone I love them as much as I want surpasses the pleasure of ejaculating from masturbation.

“Miyu, so from now on, I want you to make me come with your mouth. Catch all my semen in your mouth and swallow it.”

“Nh, nh… stop it… nchu, chu… just do it already… hamu… ju, chuu…”

“I love you, Miyu. I’m about to come. Haa… Miyu… ugh.”

As I ejaculated—byuru byuku byuku—I stopped stroking her hair and released my semen into her mouth. Instead of moaning in pleasure, I focused on gazing into Miyu’s eyes as I came.

The amount of semen increased with my feelings, forming a thick, white pool in Miyu’s mouth. Despite saying my semen was disgusting, she prioritized my satisfaction, opening her mouth to show me how much she’d taken.

There was nothing particularly lewd about it, nor was she following my orders. It was just a matter of procedure: giving me head, showing me how much semen she’d taken, and swallowing it.

“It felt amazing. I can’t put it into words, but it was incredibly exciting.”

“You can tell by how much I swallowed, so it’s okay.”

After pulling up my pants, Miyu stood up and headed to the bathroom to relieve herself. Her response felt distant, despite my declaration of love.

My love confession was only used to heighten the excitement. Miyu knew that, so she didn’t say anything. Was it wrong of me to expect a response?

It would be rude to eavesdrop in the hallway, so after gathering my thoughts, I headed back to my room, only to find Miyu coming out of the bathroom. She was quicker than I expected.

“Are you done already?”

“Do you mean, am I done with masturbating as well?”

Miyu responded calmly and accurately. Her hands folded in front of her resembled a maid serving her master.

Her interpretation was spot-on. It’s an undeniable fact that Miyu gets aroused when she drinks my semen, and we both know it.

“Before Onii-chan falls asleep, I’d like to ask for something in return.”

Miyu took my hand and led me to her room. Was she asking for something in return for the blowjob? I’d do anything for her.

“Here, take this.”

As soon as we entered her room, Miyu handed me the hairbrush I’d given her as a gift. I knew what she wanted, but I was slightly confused.

“It’s been a while since then. Why now?”

Between Yuka’s punishment and my attempts to become less dependent on Miyu with Yamamoto-san, the timing never seemed right. Plus, Miyu had started saying we shouldn’t have sex as siblings, so I hadn’t been able to do this. But she’d said she enjoyed chatting with me, so I thought we could still spend time together as siblings.

“You had to find a girlfriend, didn’t you?”

Miyu smoothed her long hair with her hand, sat on the edge of the bed, and patted the sheets, signaling me to come over.

“If we did this, you’d fall in love with me, wouldn’t you?”

**Translation:**

As I stood behind Miyu, her words made sense, but a fleeting doubt made my hand pause mid-brush. Her tone when she said, “You’d fall in love with me, wouldn’t you?” sounded like she was referring to her feelings for me, not the other way around.

When I gave her the hairbrush, I already loved her, and she knew it. Of course, I understood she meant it would make me love her even more, complicating my independence. But since I felt her affection, I couldn’t help but consider the possibility.

“And, as you’ve noticed, my body is very warm right now, so I thought I’d ask you to calm me down.”

“Wouldn’t it be harder to calm down if you’re asking me to touch your hair in this situation?”

She probably meant she was still aroused from earlier and needed brushing to settle down. But when someone’s body is sensitive, even hair can feel stimulating.

“After all that head-patting, you were the only one who ejaculated and made me drink your semen. I’m kind of in a ‘teased but not satisfied’ state, so I thought I’d ask you to make me feel good.”

She knew her sensitivity and still asked? Well, that makes sense. She’d said girls can be satisfied without orgasming, and since she’s not comfortable with touching her privates, having her hair played with is less resistant for her. It sounds extra perverted, but given our history, it felt natural to me.

In that case, she obviously hadn’t just gone to the bathroom. For a guy, it’d be like having his penis played with until he was hard but not being allowed to ejaculate. Being aroused and then told to finish alone is cruel. I’ve been told to do it myself too, but at least I had the pleasure of Miyu watching me, which made it different. It was a kind of play.

I started brushing her hair, detangling it from the ends. Miyu’s well-maintained hair never gets tangled, even with my amateur brushing. Its length and straightness down to her waist are remarkably high quality. Every time I lifted her hair, my hand brushed against her body, making her flinch cutely at her neck and sides.

She’s definitely in love with me, asking for something like this. Is it okay to ask? I’d be happy if we were mutual, and there’s no doubt about it. Still, nothing progresses until she says it.

She’s supposed to tell me something important, so I’m holding back. But I want to confirm it now and be with her as a couple.

*(I need to create an opportunity somehow.)*

As I brushed higher, my hand grazed her ear when I moved her side hair back, making her squirm noticeably. When I reached the back of her neck, she let out a hot sigh just from having her hair brushed.

I finished the top of her head normally, then returned the brush to her sensitive neck. For Miyu, this is like an erotic massage, so there’s no such thing as overdoing it for her hair. Her panties are probably soaked by now.

“…How does it feel?”

I asked about the brushing, which I’d been doing silently. Her whole body was so sensitive that even my whispering near her face made her neck ticklish.

“Much better than I thought.”

Her simple but positive response made me excited. I got carried away, adding a hand to stroke her hair after brushing. With each pass, Miyu arched her already straight back, letting out a sexy voice.

Neither of us grew tired, and I kept brushing, even if it became repetitive, as long as it made her feel good. Miyu seemed to enjoy it, and eventually, she tensed her thighs as if she’d orgasmed just from having her hair pulled down. Since that’s what she wanted, I finally put down the brush and just combed her hair with my hands.

Using both hands alternately, I stroked her hair from top to bottom. Finally, Miyu couldn’t hold back her moans, starting to tremble. It felt like giving a girl a handjob, and as revenge for all the times she’d made me ejaculate, I kept a steady rhythm, gently caressing her hair.

“Nhaa… aah, sorry, Onii-chan…! Ah… nnh…!”

Miyu pressed both hands against her thighs, clearly reaching her limit. After sucking her brother’s penis, drinking his semen, and becoming overly sensitive, my sister finally orgasmed just from having her hair stroked.

“Haa, fuu… nh…! Ah, ah, ah…!”

Girls can continue even after orgasming, so I didn’t stop. But as her moans and thigh spasms grew, Miyu eventually called for a pause.

“Stop, I can’t… haa, nha, aa… if this becomes a habit, I won’t be able to get my hair brushed normally anymore.”

I stopped at her request. For Miyu, who values peaceful sibling moments, associating hair brushing with sexual pleasure would be problematic. I understood.

“Was it satisfying?”

“Y-Yeah. It was really good. Thanks.”

Miyu remained facing forward, rubbing her knees together. And I was impressively erect. I couldn’t do this without getting hard.

“What should we do tonight?”

“Umm… I don’t think I can control myself anymore, so… sorry, but let’s do it separately…”

“Alright, that’s probably best.”

I could have asked her to finish me off again, but like this morning, she might lose control and end up doing something we’d regret. I agreed with her suggestion.

“Can I ask you something?”

“What is it?”

“You change your underwear before bed, right?”

“Yeah, it gets pretty bad.”

Miyu no longer hides how much she gets wet with me. Since she’s not hiding it, there’s no issue with me knowing.

“Can I have them?”

I said it. I asked if I could use Miyu’s soaked panties to masturbate.

She fell silent, thinking, then replied in a small voice, hiding behind her bangs.

“Only if you give me yours in exchange.”

My pants were also damp with pre-cum. So, Miyu wanted to use my semen-scented pants to masturbate, with conditions.

Of course, I had no reason to refuse. Without unnecessary words, we both removed our pants while facing forward, avoiding eye contact, and exchanged them.

Both of us were naked from the waist down. Miyu’s pajama top looked like a dress, so I couldn’t see her privates, but I took her panties in my right hand and left her room.

“Goodnight, Onii-chan.”

Finally, Miyu hugged me from behind. Her calm tone was unusually cheerful.

“Goodnight, Miyu. See you tomorrow.”

“Yeah. See you tomorrow.”

We switched positions, touching hands one last time before returning to our rooms.

Tomorrow, we’d face each other as usual, share household chores, and have sex when aroused. It was a promise to keep our daily lives unchanged.

“Haa, haa, aaa… Miyu…!!”

Back in my room, I shoved my penis into Miyu’s soaked panties and thrust wildly on the bed. Thinking of my sister doing the same in the next room, I imagined impregnating her and ejaculated violently, releasing all my pent-up emotions with my semen.