My Little Sister Is the Best F*p Material - Volume 6 Chapter 09: An Older Brother Understanding His Little Sister's Fetish

Volume 6 Chapter 09: An Older Brother Understanding His Little Sister’s Fetish

A night had passed since I received Miyu’s virginity, and Miyu and I were now in a relationship that had taken a step forward as lovers. …Or at least, that’s how it should have been, but our brother-sister everyday life hadn’t changed all that much.

In the living room, there was the familiar scene of Miyu sprawled face down on the sofa, her aloofness during the day unchanged from before. Using the armrest as a makeshift bookstand, with a magazine placed there, and a cushion wedged in the gap between her underboobs, she was quietly spending her time, her long hair spread down her back.

We had been all lovey-dovey with a wake-up kiss, but after Miyu went back to her room to change, she had reverted to her usual cool demeanor. It’s like going to a beef bowl restaurant after losing your virginity, it almost feels like she is intentionally acting this way.

“What should we do for lunch?”

“Hmm, I’m thinking because the frequency of sex has been increasing, the meal plan is finally starting to collapse.”

Miyu flips through the pages of her magazine without seeming to dwell on it too much. The frequency of sex is due to my libido, but we never prioritize cooking over our intimate moments. Miyu would never allow it if it meant less physical affection.

“If there aren’t many ingredients left, how about we eat out again today while we’re out shopping?”

“Yeah, that sounds good.”

The decision was made so easily with that exchange. Today wasn’t completely sunny, but the chance of rain was also low, making it a perfect day to go out with Miyu. Besides, it’s supposed to rain for a while starting tomorrow, so going out today would be a good way to clear our heads.

Now, I said our relationship hasn’t changed, but that was with the caveat that I don’t change how I interact with Miyu. There are definitely changes in my state of mind as I go about my daily life, and one reason I don’t change my lifestyle is because Miyu said that she wants to love each other as brother and sister.

“What magazine are you reading?”

When I peeked at the magazine Miyu was reading, she moved her head slightly so I could see it easier, and just replied without looking up, “It’s my usual fashion magazine.” A very typical brother-sister exchange. So far, this is a scene you could see in any household.

But we’re lovers, so we can engage in physical affection that normal siblings wouldn’t do. For example, lifting her long, silky black hair to enjoy the texture, touching her side boob over her blouse, or pinching her skirt to peek at her panties; I can do whatever I want to Miyu, who wouldn’t even allow another man to touch a single one of her body hairs.

Well, I mean, there are limits. Not making Miyu uncomfortable or hurting her is a given, and I’m not even allowed to thoughtlessly mess with her thighs or nipples, as I was warned before. It’s because she trusts me on that point that Miyu lets me do whatever I want.

This “not making her uncomfortable” part is tricky. It seems like Miyu has a desire to be dominated by me, so when it comes to sex, I’m allowed to treat Miyu as my property. That’s why even if I put my hand under her skirt and start stroking her butt like a pervert, Miyu won’t even flinch. She just keeps reading her magazine as if I don’t exist.

(Hnnn… What a feeling of wrongfulness… Just touching her butt is making me hard…)

Just recognizing the fact that my hand is inside Miyu’s clothes is enough to arouse me. I put my fingers on the leg holes of her panties and trace her groin, Miyu slightly stiffens her inner thighs for just a moment, and despite that she ignores my wild behaviour, my penis became so engorged that it feels like it might explode.

My fingers reach for Miyu’s pussy as if drawn to the nectar of a flower, and when I touch it, it was wet to her labia with the overflowing of love juices that came as Miyu tensed up. I can’t make my untrained fingers wait for even a few seconds, and I start inserting my middle finger into Miyu’s hole. My peripheral nerves perceive the temperature inside Miyu’s body, and I realized that Miyu’s vaginal opening, which had felt tight during our first sex, was covered with soft, fluffy folds of flesh when touched with my finger. If I rubbed my penis raw here, I’d come instantly.

(Miyu… Having a hole like this, what a lewd body…)

I, who had only been fascinated by her young, yet developed, breasts, had been unaware of the goodness of my little sister’s hole. I wanted to know where to stimulate this female hole for maximum pleasure, so I stimulated the vaginal canal from front to back, massaging it as the mucus stuck to my finger with each stroke. It’s difficult because of the intensity Miyu can become, I know that I should focus on stimulating what is known as the G-spot, especially when I press down hard on the belly side, Miyu’s vagina contracts because Miyu’s sensitivity increases as you get closer to the womb.

Even after being done so as I please, Miyu is still ignoring me. Although, from earlier it is clear that she is really struggling, as she hasn’t turned even one page of the magazine. Even though I’m finger fucking her and she must feel so good that she’s about to moan, Miyu is only focused on maintaining a steady rhythm of breathing and is restraining herself from hand-jobbing.

Saying nothing even after all of this means that I’m allowed to use this hole, right? Miyu must also want to be violated by her brother in her natural state as a sister, and I’m getting an erection right now for that very reason. Steel myself, I pulled my finger out of Miyu’s vagina and went to my room to get a condom.

During normal sex, leaving to get a condom mid-way through is the worst thing you can do, it ruins the mood. But, Miyu is simply reading her magazine as part of her daily life, and whatever I’m doing is none of Miyu’s business. Miyu simply sees my moving to my room upstairs, and of course returning with a condom as my brother is just living the life as a brother. And even being used by her brother as a love doll is something that Miyu wants to turn into an ordinary part of her everyday life.

I casually took off my trousers next to Miyu and put a condom on my erect penis. Miyu, who had become more relaxed now that I had temporarily stopped pleasuring her by hand, was reading on with the magazine, which was featuring autumn sweaters that weren’t even made of summer knit.

“They’re already introducing outerwear even though it’s the middle of summer.”

“They even start selling long sleeves around the end of summer vacation. You have to check out the new stuff before the season starts.”

Even when I spoke to Miyu right before inserting my penis, her reaction was perfectly normal; she was just reading her magazine with a cool look, even though she was about to be used for sex. You wouldn’t think she’s the same woman who had an orgasm so intense she couldn’t stop her vaginal spasms during our first time.

I couldn’t take it anymore, so I straddled Miyu’s thighs on the sofa, kneeling on one knee, pulled down her panties, and exposed her pussy. Then, with Miyu’s pussy, with its usually rare pink folds exposed by the finger job, I thrust my rigid erection in, lowering my hips.

After the sound of squishing air, I didn’t hear a moan. As far as I could tell from her profile, her expression didn’t change. However, she couldn’t completely hide the reaction in her lower body, which was being directly stimulated. Her thighs, which usually looked like pure white, soft pillows, showed muscle definition. By pulling down her panties, I’d also inadvertently exposed her anus, which was twitching in response. In conjunction with that movement, Miyu’s vagina contracted, and without me even moving, love juice was pushed out and dripped onto the sofa.

Wanting Miyu to feel the fact that we were having sex as much as possible, I slowly rubbed her vagina with long strokes. If she was going to remain unresponsive even after this, I’d also tease the surface of her asshole with my finger, just concentrating on playing with Miyu in a way that would give her shame. Even as I panted and thrust my hips, Miyu didn’t let out a single sigh or even blush. I was impressed by her ability to maintain her composure.

Because of the awkward position, only about half of my rod was inside her, and the grinding of my hips didn’t seem to be targeting Miyu’s G-spot at all, so Miyu was probably able to endure the pleasure. Of course, if I ground against her uterus, it would definitely ruin Miyu’s ability to even go out from how much her reason would collapse. So, I realized it wasn’t the time to go that far. I undid the buttons of Miyu’s blouse and put my hand in her cleavage.

While pounding my sister from behind, I put my fingers into the bra which had some space in it because she was face down, and I rolled her nipple, which was as hard and engorged as my penis, with my middle finger. Then, even Miyu couldn’t maintain her composure anymore. She hunched over, and buried her face as I teased her nipples. When she was pushed with the stimulation of her heightened nipples, she crumpled the magazine in her hands and stopped breathing.

Wanting to finish using my sister, who was quietly being pounded by me for my sake, while she remained so dutiful, I thrust my hips faster to ejaculate. The fact that I couldn’t hold back any longer because of Miyu’s sexiness also played a role. I squeezed her boobs with my hand as I had jammed it in her cleavage, and held her nipple in between the second joints of my fingers. I exerted my cardiovascular system as if I was sprinting and thrust my hips, and finally I gave in to the approaching feeling of climax and let out my semen.

At the end, of course, so that she would feel my ejaculation with her vagina, I stopped both my hand movements and hip movements, and transmitted the throbbing of my penis to Miyu’s vagina, “throb…throb…”. Miyu, lying face down with her lips tightly pursed and her pussy soaking wet, had an unusual amount of sweat on her hands, and the magazine she had just bought was wrinkled.

“Haa, hng, ah… that felt good…”

I carefully tied the condom closed so that the semen wouldn’t spill out and wrapped it in tissue. I wanted to observe Miyu’s vaginal opening a little longer, which had been temporarily widened from me pounding her, but I didn’t because Miyu would dislike it. I put her panties back up and smoothed her skirt down her legs, and I lightly rinsed the dirt from my penis and washed myself off in the shower.

Alright, now that I’ve ejaculated and feel refreshed, it’s time to go out for lunch. Since shopping is the only other plan, I just need to tidy myself up at the end, since all I need is my wallet and smartphone.

“Miyu, are you going to be able to go eat?”

Peeking into the living room from the door, Miyu hadn’t moved; her face was still pressed against the magazine. She seemed to be trying to lift her hips to get off the sofa, but her thighs were trembling with her butt sticking out, and she couldn’t move her legs. Miyu eventually gave up and looked at me face down, sending me a piercing glare. I wish she would stop glaring at me with such an intense look, it just makes me hard again.

“A-are you able to go?”

“I’m going.”

Miyu took a breath and raised her upper body by stretching her arms, then sat back on the sofa, twisting her hips. Then, she got used to the feeling of walking slowly by standing near the desk and gradually accustoming her muscles. After another half-hour, I left the house with Miyu, who had tied her hair back in pigtails that fastened under her ears. She said she deliberately emphasized her youth to instill guilt in me, but it’s not like Miyu wouldn’t think that would ignite my lust, so I see this as a setup for our next intimate moment.

Buying groceries is usually just a quick trip to the nearby supermarket, but like I talked about with Miyu during our first time, the only decent place to eat out near us is a gyudon restaurant. So, since we were going out anyway, we decided to take the bus to a large shopping complex a little further away, which has a food court, and buy the groceries on the way back. We headed straight for the restaurant floor after getting off the bus, and maybe because we left the house late, we had no trouble finding a table. We took turns ordering for our seats, and when the call-up bell rang, we went to get our food. Both Miyu and I ordered steak from the same shop.

“You went for something substantial, didn’t you, Miyu?”

“I’m using a lot of energy, so I need to eat this much to keep going.”

Miyu skillfully handled her knife and fork, cutting the meat silently and bringing it to her mouth, chewing and swallowing discreetly. The way she brushed her hair away from her mouth, the way she held the glass of water, every little gesture showed her upbringing. It made me feel a bit overwhelmed thinking that this Yamato Nadeshiko-like little sister was just now an onahole.

“Is there anything else you want to buy?”

“I’d like to restock on stockings. I’m almost out.”

“Stockings in the summer? Haven’t you been going bare-legged until now?”

“When I go to school, yes. I don’t like people seeing my bare legs, so I often wear skin-colored ones.”

I understood, and as Miyu said that, I turned my body sideways to check Miyu’s legs, but they didn’t seem to be wearing stockings.

“When I’m going out with you, Onii-chan, I can show off this body as Onii-chan’s, so it’s okay to expose myself.”

“You really do love me, don’t you?”

That answer was unexpected and it was lightly spoken, but when Miyu had the fork with the meat in her mouth, and touched the bottom lip, shyly saying “Well, maybe”, I was so filled with affection that I felt like I was going to die. This little sister is head over heels for her brother.

“In that case, there’s a discount store, so let’s go there.”

“Don’t you want anything, Onii-chan?”

“Not particularly, as far as I can think of. I’ll buy something if I find something while we’re looking around.”

After finishing our meal, we headed to a store famous for its incredibly cheap everyday items. The shelves, stacked with cardboard boxes, were packed with supplies, from shampoo and snacks to adult goods like condoms and lotions.

“It’s cheap… should we buy some?”

“You know, if you’re using that much, it’s going to be a problem even if you buy more at the convenience store.”

Miyu gave me a glare that made me feel ashamed, but the essentials were essential.

“The thin ones only have three in a box, which is a problem. Considering the future, should we buy about five boxes?”

“Think about it, Onii-chan, I’ll have to take this shopping cart to the register.”

“Ah… I see. Sorry.”

A girl buying over a dozen condoms at once would only give off a suspicious vibe. I wouldn’t say Miyu would mind, since she could use that to show off our sexual relationship, but it would be too much considering what we already have at home, so I should restrain myself to just one box. Even just one box of condoms being bought by a girl is quite lewd, but oh well, we’ll let it slide.

“Speaking of lewd things, there are things like this too.”

The discount shop also had items you don’t see in everyday life. For example, a baby doll that could only have been made to arouse men. It was short, exposing the shoulders and stomach, and the one I was holding was made of see-through fabric except for the underwear. The part that covered the genitals was a tiny T-back, and the nipples were visible, so it was almost an adult product.

Miyu might have worn it as her own hobby, but I’d never seen it. I could gaze at Miyu’s see-through nipples, or maybe suck it over the clothes. In any case, Miyu would wear a baby doll in a lewd way.

It’s possible Miyu might have worn it as part of her own taste, but I’ve never seen her in one. I could admire her nipples through the sheer fabric or even suck on them through the material. Either way, Miyu would definitely rock a baby doll in a sexy way.

“What do you think?”

“The fabric is a bit questionable, so wearing it directly on my skin would be tricky. It might be better to make one.”

“You’d make one for me!?”

“N-No way. I’m not making a dress just to have sex with my brother.”

Miyu snatched the bag with the baby doll from me and hung it back on the rack. Unfortunately, it was rejected, but since it’s Miyu, I’d love for her to wear it someday when she’s older.

“Looks like the stockings you’re looking for are right next to it.”

Near where the baby doll was displayed, there was a section for stockings. They were sorted by thickness, with various brands, in both nude and black, and tights were also available.

Back when I was a virgin, bare legs were the ultimate ideal. I was desperate to know what lay beneath those stockings, and it was disappointing when what looked like perfectly smooth legs from a distance turned out to be covered in nude fabric. I couldn’t even openly admire Miyu’s bare legs back then.

But now, I know what a woman’s bare skin looks like. I can touch a girl’s bare legs as much as I want, and even use them as inspiration for masturbation. So, if she’s wearing stockings, that’s fine too. In fact, it’s even more enticing now. Knowing what real bare legs look like, the hint of skin through black stockings is sexually intriguing. And if it’s not just her legs but her most intimate areas faintly visible…

“What are you staring at so intently?”

“Well, I was thinking that stockings might be even sexier than a baby doll.”

When I muttered that, Miyu shot me a disapproving look, as if to say I only think about lewd things.

“Thirty denier is absolutely out of the question.”

“But it says ‘tights’ right here.”

“Even tights can be sheer. At least go for sixty denier.”

“O-Okay, I get it.”

She’ll wear them, it seems. Miyu hates her childlike genitals and even refuses to let me see them, so she’ll tolerate going commando with thick tights but not with thin pantyhose. But imagining a serious girl like Miyu wearing sheer stockings without panties is already so erotic that I’d love to see it in person.

“Just in case, let’s also get black pantyhose.”

“Fine, whatever.”

With a reluctant expression, Miyu picked up both nude and black stockings and placed them in the shopping basket. One of them will be worn specifically to make her brother ejaculate. Along with that, we picked up some missing household items, and Miyu took the basket to the checkout to bag the items.

Even though I’ve quit my part-time job, we’ve always managed our household finances with the money our parents gave us, so there’s no sense of whose money is whose. Now that we’re a couple, even the savings from our allowances feel less like our own. We’ve always lived in the same house, but since becoming a couple, it feels like we’ve started cohabiting like a typical couple.

“Miyu, you’re so understanding.”

I muttered as I transferred the items from the basket into the shopping bags. The black pantyhose I’m holding now was bought specifically to make Miyu wear it without panties and have sex with her. Miyu, who was placing the last box of condoms into the bag, glanced at me sideways.

“I figured I should indulge my brother’s perverse fetishes a little, or he’d be pitiful.”

“Maybe you’d even do lolita cosplay for me?”

“No way.”

After brushing me off with a quick response, Miyu grabbed the plastic bags and headed toward the store exit. I couldn’t help but chuckle at her familiar reaction and followed behind her, taking over carrying the bags. It seems the day Miyu will wear her favorite outfit for sex is still far off.

On the way home, I was thinking about how to make use of today’s haul. The premise is that she’ll wear it without panties, but I still need to figure out the specific scenario for getting intimate. With sheer pantyhose, Miyu doesn’t seem willing to show what’s under her skirt, so all I can do is touch her sensitive parts through the mesh. On the other hand, with tights, she’s apparently okay with showing up to her crotch, but how to make that arousing is another question. It’s definitely worth admiring, but it also feels like I could just have her wear a loli outfit without panties and call it a day.

(Is it really this complicated just to get my little sister to go pantyless…?)

On the bus and while walking home from the supermarket, I kept glancing into the bag and mulling it over. Before I knew it, Miyu was staring at me.

“Oh, uh, I was just thinking about how to make you look even more irresistible. Since we’re going all out with props, it’d be a waste if I just had you wear it and that’s it, right? You wouldn’t get much out of it either.”

“I get it. I was just impressed that you’re this serious about getting your little sister to go pantyless,” Miyu said.

She seemed to be in a surprisingly good mood as she walked beside me. When we reached the house, she pulled out her keys, said, “It’s kinda nice,” and went inside first. Maybe Miyu started liking me not because of my personality but because I understand her kinks.

I set the bags down in the entryway, washed my hands, and handed Miyu a pair of black pantyhose as she came out of the changing room. Honestly, I’d been tempted to have her change into them in the store bathroom so we could walk home together with her already pantyless. It wasn’t about starting anything sexual right away. The whole point of this game was to watch Miyu move around the house in that outfit.

Miyu understood what I was going for. She took the pantyhose, slipped off her panties without a word, and revealed a simple ice-blue pair as she pulled them off while standing. I was curious about the panties themselves, but now wasn’t the time to focus on that. She tossed them into the washing machine and put on the pantyhose right in front of me. As she bent forward to smooth out the wrinkles, the fabric clinging to her bare legs was already insanely erotic.

Once she pulled them up to her waist, Miyu tugged her skirt to ensure her crotch was fully covered before heading to the living room. Apparently, she was going to start preparing pasta using the canned tomatoes we’d bought. While she boldly transferred the can’s contents into a pot despite wearing a blouse, I went around the house restocking supplies and organizing what we’d bought.

When it looked like she was done cooking, I moved to the kitchen. At a glance, her outfit—blouse, skirt, and pantyhose paired with her uniform style—looked like something a prim and proper girl would wear, almost defensively chaste. But in reality, there was nothing but her bare skin beneath those pantyhose. I couldn’t see it with my eyes, so, as expected, I’d have to enjoy it by touch.

“How’s it feel?” I asked Miyu after she’d finished seasoning the food and washing the knives and other utensils. Of course, I wasn’t asking about the pasta but about the pantyless pantyhose.

“You probably wouldn’t get it,” she said, wiping her hands on a kitchen towel before continuing, “but it kinda makes me feel naughty.”

It wasn’t an incomprehensible answer. Getting Miyu to dress provocatively wasn’t just for my enjoyment—it was also about letting her experience excitement she wouldn’t normally feel. A little sister who gets off on masturbating in a loli outfit would have to be turned on by being half-forced to go pantyless, probably even more than I’d imagined. The way her hair was tied into pigtails, emphasizing her younger-sister vibe, likely made her even more aroused.

The only way to confirm it was to check how wet she was. After this morning’s intimacy, her sensitive parts should still be relaxed, so if she was feeling naughty, the pantyhose would probably already be damp.

“Mm, huh, you’re doing it now?” Miyu asked, sounding surprised as I reached for her skirt from behind. She probably wanted to savor the sensation of the mesh against her sensitive skin a bit longer.

“But, you know, we’ve still got the tights.”

“Don’t we have time to use them all later? Nn, ah, w-wait, ah…!”

When I touched Miyu’s crotch, it wasn’t the familiar sensation of wet cotton panties but a more watery slickness against my fingertips. The moisture spread across a wide area, too much to be absorbed in one spot, making it seem like Miyu had wet herself, which only heightened my excitement.

“What am I supposed to do with such a naughty little sister…?”

“You’re the one making me do this… nn, don’t touch so eagerly… haa, nn…!”

Even though it was just thin fabric, her entire area was covered, so I couldn’t slip my fingers inside. Instead, I savored the surface, sliding my palm from her lower abdomen to her thighs. Each time I grazed the base of her legs, the skin of her labia, or the spot above her vaginal canal, Miyu twitched and let out sultry moans. To reach under her skirt, I held her upper body close, and the sight of her blouse stretched by her full breasts in the corner of my eye made the scene even more lascivious.

I know well that the sensation of being touched directly on the skin versus over clothing is entirely different. Even for me, having my erect penis stroked through my pants instead of directly brings a unique kind of pleasure. The pleasure Miyu was feeling must be something similar. The sensation of another’s touch can’t be replicated alone, and even for someone like Miyu—prim and bold on the outside but secretly obsessed with masturbation—this kind of pleasure might be entirely new.

As proof, the more I caressed her, the more her secret spot overflowed with nectar, intensifying her wetness. When I pulled my hand away from the pantyhose to shift positions, the sticky moisture on my fingertips was so thick it practically formed a thread—Miyu was that wet.

“Haa, haa, Miyu… I’m so turned on, it’s driving me crazy…”

“When are you ever going to be satisfied…?! Ah, hnn… you keep hitting sensitive spots… hya, ah, ah, aah…!”

My fingers grew rougher, digging into her groin and the slit of her vagina until the pantyhose pressed tightly against her. My left hand, which had been merely holding her, had somehow found its way to her breasts, groping them through her blouse. She responded with obvious pleasure. Despite her bra, I could distinctly feel the hardness of her nipples, and it even seemed like a small point was poking through the curve of her blouse.

My penis was, of course, rock-hard, and still trapped in my pants, it felt painfully confined. While driving Miyu wild, I managed to unzip my pants between my fingering and pulled out a condom I’d stashed in my pocket. Just freeing my erection wasn’t enough—I needed release.

I kept stroking her to maintain her arousal, then slipped the condom onto my penis. I was going to take her from behind, standing. But the pantyhose were in the way, so I hooked my fingers into the fabric over her vulva and ripped it apart with all my strength, exposing her flesh.

“Fueh!? O-Onii-chan…!?”

“Miyu… I’m sorry, I can’t hold back anymore…!”

I didn’t waste a second before thrusting inside. I pulled her hips toward me, forcing her into a bent position, and plunged my penis into her exposed flesh.

“Hyaah! Ahh, ahh… nn, no, nooo…!”

As I thrust with abandon, Miyu tilted her head back, eyes rolling upward, and after just a few pistons, her face was completely lost in ecstasy. Her vaginal walls, which should’ve been loosened from this morning’s sex, gripped my shaft tightly again. I realized then that no matter how many times I took her, her body was built to stay this tight.

“Miyu… haa, ahh… Miyu, Miyu…!!”

“Brother… no, nnah, raw sex is really bad…!!”

Even as she lost herself in pleasure, Miyu’s hands grabbed at my wrists, which were gripping her hips. Despite the overwhelming bliss pushing her to climax, a sliver of rationality seemed to be trying to stop our sex.

Since I’d hidden the condom in my pocket, Miyu didn’t know I was wearing one and thought this was unprotected sex. If I actually came inside her, Miyu—who loves my semen—would lose all sense of reason. What started as sex for pleasure had, for her, somehow turned into baby-making.

“Haa, nnah, Onii-chan… it feels so good… nn, n… ahh, haa… it feels so good… ahh, ahh, aahhh!”

Miyu, who’d been trying to stop the sex, was now moving her hips on her own. Not only that, she pushed me against the refrigerator door, grinding her ass to keep my penis inside. Bracing her hands on the kitchen counter, she arched her back like a shrimp, grinding her hips to press my tip against the entrance of her womb. Her vagina, now fully committed to milking my semen, transformed rapidly. The intense, rhythmic squeezing synced with my balls, forcibly drawing out my release.

“Ugh, ahh… Miyu… I’m gonna come… ugh… ahh…!”

“Ah, ahh, Onii-chan… no, no, no… nnah, haa, ahh, it feels too good to stop…! Haa, ah, ah, ahh… don’t come, don’t come inside…!!”

Screaming in pleasure, Miyu’s increasingly frantic hip movements pushed me past my limit. Spurt, spurt, splurt—my penis, coated in her fluids, pumped semen deep inside her as if it were truly ejaculating into her womb. In reality, the condom stopped it from reaching her, but if it hadn’t been there, just how much of my sperm would’ve flooded into her?

“Haa, haa… I came…”

“Nn… ugh… I might’ve… come too…”

Miyu rubbed her stomach, murmuring with a dreamy expression. Her legs, as usual after such intense orgasms, had no strength left, and I was holding her hips to keep her upright.

“Did you squirt?”

“No, not that.”

Once she regained enough strength to stand on her own, Miyu took my hand from her hip and guided it to the spot on her stomach she’d been rubbing.

“Maybe the eggs inside here… came out to meet your sperm.”

“W-What? No way…?”

“I don’t know. It just feels like it.”

There’s no way that could actually happen, but since it’s Miyu, I almost started to believe it might be true. Her brain, influenced by erotic manga, is quick to indulge in such unrealistic fantasies.

“Uh, I didn’t get a chance to mention earlier, but…”

I pulled my penis out of Miyu’s vagina, removed the condom, and showed it to her. There was even more semen inside than this morning.

“I was actually wearing a condom. So, if I got your hopes up, sorry.”

“Hm, got it.”

I worried that Miyu, who I thought was genuinely expecting to get pregnant, might feel betrayed, but her reaction was surprisingly subdued. She took the still-open condom and muttered softly.

“Oh, right, I can’t get pregnant.”

Maybe she’d somehow noticed I was wearing a condom. Despite her flushed cheeks from arousal and exertion, her expression was calm.

“Wanna take a bath? We’re all sweaty.”

“Yeah.”

After our second round of sex today—or rather, my masturbation using my little sister as a love doll—we took an early bath. Bathing together has become so routine for us, even more so than sharing a bed, that we strip at the same time without even needing to say a word.

That said, it’s fine now since we have the house to ourselves, but what are we going to do when our parents come back? Or rather, how are we supposed to explain our relationship? We’ll have to address it eventually, and as the older brother, that’s probably my responsibility.

“You know, you never really tried to jump me, did you?”.

“What’s with the sudden question?”

Miyu was sitting between my knees, leaning back carefully so the clip tying up her hair wouldn’t poke me. When she lifted her hand from the water, droplets ran down her elbow, and the way she wiped her slightly sweaty forehead was genuinely beautiful.

“We’ve been naked together in the bathroom for a while now, right? So I thought you might, like, impulsively grope me or something.”

“I do want to grope you, and when I was forced to abstain, I was at my limit. But you always ended up making me come one way or another, and I knew you’d let me finish, so I didn’t feel the need to force myself on you.”

“Hmm. Well, I did tell you not to touch me too strongly.”

I wasn’t sure what train of thought led to that question, but once the conversation ended, it felt like there was no substance to it. That made me think the question itself might hold some meaning. Miyu’s indirect behavior has definitely honed my ability to read her. She wants more physical closeness.

“You’re okay with me touching you as long as it’s not sensitive spots, right?”

I reached out, resting my hands on her stomach and the underside of her breasts, savoring her bare skin. Even when she curled up, no excess fat spilled out from Miyu’s waist, yet when I pressed my fingers in, it was as soft as a marshmallow.

“It’s impossible not to get turned on by this body.”

“As long as I show you my naked body, you get excited, so it makes things easy during sex.”

Isn’t that how it usually works? When a guy sees a girl’s naked body, he gets excited. Sure, the intensity varies, but still.

“I can’t seduce you with dirty talk like Kanade-san does.”

“…Is that so?”

I feel like Miyu’s words and actions have turned me on plenty, but I guess she makes up for it with her moe charm. Everyone’s different, and everyone’s erotic in their own way.

“Wanna have sex with the tights on after we get out of the bath?”

“Is there no bottom to your sex drive?”

“I’m just in the mood to get off with you today.”

It’d be a problem if I got turned on every time I bathed with Miyu, but today was different—I just wanted to savor how adorable she is. The thrill of having sex with her for the first time hasn’t fully worn off yet.

After getting out of the bath, I made a request of Miyu. Just using her in tights without panties as material for getting off didn’t seem like it would be enough to satisfy me. So, even though we’d just bathed, I asked her to put on a certain outfit she wears regularly.

“It feels really weird to do this in this…”

Miyu came to my room, her checkered skirt swaying, wearing the blazer she hadn’t worn since summer began. It was her school uniform. Inside that skirt, she was wearing only tights, no panties, and I was sure it was warm and fragrant down there.

With tights, I’m allowed to see under her skirt. So, I wanted her to be in the outfit that excites me the most visually. When I thought about it, Miyu looks the most pristine when she’s heading to school, so if she’s going pantyless, it had to be in her uniform. Meanwhile, I was in my usual indoor clothes—a T-shirt and sweat shorts. I could’ve gone naked below since I’d be taking them off anyway, but I matched Miyu’s effort.

“I thought it’d be better than putting you in a lolita outfit.”

“Don’t you dare get it dirty. I just had it cleaned.”

The idea of breaking in a freshly cleaned uniform with sex with her brother must be especially hard for Miyu to accept. For me, that’s exactly what makes it so good. Miyu hates getting her clothes dirty, so splattering semen on her uniform is off-limits, but the fact that she’s come around to safe sex with me is remarkable progress.

“So, what do I do? Lift my skirt or something?”

“Uh, yeah, that’s it.”

It didn’t feel quite right, but since it was what I wanted, I asked her to do it. Miyu, with a straight face, lifted the hem of her skirt, revealing the tights. The seam of the fabric seemed to point directly to her lewd parts, making it incredibly erotic.

But for some reason, my attention shifted from her lower abdomen to her feet. The black fabric highlighted the shape of her feet—the curves of her toes, the ball of her foot, and her heel—stirring a sexual curiosity in me.

“Then, um… could you step on me?”

“Huh? W-What? Your… important part?”

“Yeah.”

I couldn’t believe I’d said it out loud. But right now, what I craved was undeniably Miyu trampling me with her feet. That time in the bathroom when she gave me a footjob, I didn’t get to finish, and while Yamamoto-san once got me off with her feet, she was barefoot. Miyu’s feet in tights would surely feel different.

“C-Could it be… I’m the reason you turned into such a pervert?”

“I can’t deny that. Sorry.”

“Well… fine.”

Hesitantly, Miyu extended her foot and pressed the sole against my crotch as I sat on the floor. Being stepped on through my pants felt humiliatingly thrilling. Miyu struggled to balance on one foot, and whenever she wobbled, her weight pressed harder, sending sharp pain through my shaft. Thanks to that, my penis was rock-hard despite this being my third ejaculation of the day.

Once I was fully erect, she alternated between pressing with the arch of her foot and digging with her toes, her heel grazing close to my balls each time—a mix of fear and pleasure. Even Miyu seemed taken aback by my request, her expression less neutral and more like a scowl, looking down at me like I was an insect as she tormented my cock.

“Ugh… I might come like this, so can I take it off?”

“Be my guest.”

She could’ve been wearing a maid outfit with that cold tone and glare—it would’ve suited her perfectly. Her icy demeanor pushed my erection to its limit. After being stepped on, my glans was painfully red when I pulled off my pants.

Now, the sensation of Miyu’s foot came directly to my penis. The rough texture of the tights and the warmth of her foot added to the stimulation as she continued to trample my crotch. The precum my boxers had been absorbing transferred to her foot, and though she seemed annoyed, she kept kicking at my penis.

“Ahh… it’s good, so good… Okay, I have another request…”

“Whatever you want.”

Her eyes were filled with resignation.

“Could you sit on the floor and jerk me off with both feet, facing me?”

“…That’s a pretty tough order. I’ll give it a try, but let me know if it doesn’t feel good.”

Miyu sat on the hardwood floor, stretched her legs forward, and clamped my penis between her feet. To balance, she propped herself up with her hands behind her, rubbing me like a crab’s pincers or kneading with her soles, doing her best to make the footjob work.

Sometimes, she’d pin my glans with one foot and use the other to lift my balls with her toes, like kicking a soccer ball. It was amazing. This sister was overflowing with talent for sexual play—an unparalleled lover and sister.

And let’s not forget: Miyu, in tights, was pantyless. Bending her knees to clamp my penis opened her crotch wide. Inside her uniform skirt, every stroke of her footjob rubbed the fabric against her labia.

Even with her cool, maid-like demeanor, there’s no way Miyu wasn’t getting turned on by this. The proof? Her usually tight vulva was spread open from parting her legs, and a dark stain—so wet it made the black tights look even blacker—had formed.

(She’s so erotic… Miyu… my little sister is so damn erotic…)

Once I realized that, there was no stopping. My penis, ravaged by Miyu, was already on the verge of release. On top of that, maybe because of the heat from her lower body moving in tights, her feet seemed to be sweating, making the sensation against my penis even stickier. Surely, her crotch was the same. It wasn’t my imagination—the scent of Miyu’s sweat reached my nose, and that completely overwhelmed my capacity.

“M-Miyu… I’m gonna come. Let me finish on you.”

I leaned forward from my reclined position, almost on all fours, aiming the tip of my penis at Miyu’s crotch. I wanted to splatter my semen on her pantyless groin. My intention was crystal clear to her.

“If you get any on my uniform, I’m never doing this again.”

Miyu fully lifted her skirt, using her bare-tights-clad feet to stroke my penis until I reached climax. She skillfully angled my shaft downward with her feet, ensuring my semen would hit her vulva, guiding me to release.

“Ahh… I’m coming, Miyu… here it comes… ah… aagh!”

Spurt, spurt, splurt, splurt, spurt—!!

I shot my semen onto Miyu’s spread-open crotch, again and again. The thrill of dirtying her tights and the excitement of knowing her bare vagina was right behind them made my semen drip onto her crotch in thick, cloudy clumps.

“Miyu, that was insanely hot.”

“Yeah, yeah. As long as you’re happy, that’s fine.”

Miyu carefully peeled off her tights, like removing a condom, and tossed them into the trash. She was dry in response to the perverse play, but when she said, “Getting it on me might be easier to clean up,” I couldn’t help but want to try splattering her ass while she’s on all fours someday.

“Hey, Miyu. We’ve gone from handjobs to full-on sex, step by step, right?”

As I pulled my pants back on, I asked Miyu, who was about to leave to change out of her uniform.

“When did footjobs become okay?”

“Honestly, I still don’t want to acknowledge this kind of perverted play.”

Miyu said it firmly. Fair enough—getting my prim little sister to give me a footjob is a bit too erotic.

“But realizing how much of a pervert you are makes me feel like I need to step up and keep my wits about me. It’s like a wake-up call.”

“Sorry for the trouble.”

“That’s what sisters are for.”

With that, Miyu went to her room to change. She popped back into my room shortly after, and we headed to the living room to eat. Miyu finished preparing the pasta, refueling our bodies that had grown ravenous from too much sex. After eating, we’d lounge on the sofa, watching TV and lazing about. When we got sleepy, we’d head to bed.

We satisfy one of the three basic desires, only to deplete another. Eat, sleep, have sex when we’re horny, eat again when we’re hungry—a raw, animalistic lifestyle. That’s how we, living together as brother and sister, interact.

At night, in a quiet room, just the two of us. When it’s time to sleep, I always see Miyu in her soft pajamas, the fabric accentuating her full breasts, fueling my desire for the next day. If she’s going to scold me for my libido, she should do something about the clothes she bought specifically to turn me on. I wanted to protest the slight unfairness of it. But I also love that Miyu, knowing we’ll have sex, keeps wearing those form-fitting outfits.

“Onii-chan.”

Miyu spoke to me in a gentle voice. In the dimly lit room, signaling the end of the day’s activities, we sat side by side on the bed.

“You really love me for who I am, don’t you, Onii-chan?”

Her words, murmured with a faint smile, were an unexpected confession of her feelings. From here, it seemed she wanted to spend some slow, affectionate time together—her favorite kind.

I’ve always been swept along by Miyu’s unique sensibilities, and even now, I sometimes can’t figure out what she’s thinking. But the reason I can love her without any unease is that I hold respect for everything about her—her body, her face, her thought processes, her pride. I love all of it.

“I’m starting to realize not everyone’s like this, but honestly, even though I’m getting so much out of this, I often feel like I’m not doing enough for you.”

“When it comes to give-and-take, I don’t really mind if it’s uneven. It’s not hard for me to keep giving one-sidedly. But when the effort I put in is rejected, it makes it tough to keep trying.”

“I think I get it.”

I’ve heard similar things from others before. If that’s part of my charm, it’s probably an important fact I should acknowledge—especially if I’m going to keep loving Miyu.

“Since I gave you my virginity, I plan to spend my whole life with you. I think you’ve vaguely realized that too. Let’s think about the future—way, way ahead—together, okay?”

She placed her hand over mine, gazing at me. Her words seemed disconnected, but I understood. She wanted me to grasp the meaning of this situation, where she’s even tolerating my intimacy with Yuka and Yamamoto-san to improve our relationship.

But she didn’t want it to be a heavy conversation. As brother and sister, as the Miyu and me we’ve always been, she wanted this to continue naturally. Realizing her intent and being able to agree to it—when I thought about whether another man could do that, it became clear that I might truly be the only partner for her.

“Hey, Miyu.”

I spoke to her, my turn to share. If I was going to pour out my feelings, now was the moment.

“Let’s get married. Someday, in whatever way we can.”

With that, I squeezed her hand back. Miyu couldn’t find words, her face flushing as she grinned sheepishly.

Even if society or the system doesn’t recognize our relationship, Miyu and I exist as a couple in reality. No one can stop us from living as humans, raising children, and thriving as partners until our lives end. And we have no intention of fading away as a secret. That’s why I’ll never deny what Miyu wants to achieve.

“I’ll be looking forward to that proposal, no matter how many years it takes.”

That was Miyu’s response to my resolve. After that, we tumbled onto the bed, kissing repeatedly, savoring our time as brother and sister in the present moment.