My Little Sister Is the Best F*p Material

Volume 4 Chapter 6: Happy, Gentle Moments

When I woke up, my face was buried in breasts. Held in Yamamoto-san’s arms, I marveled at how I hadn’t suffocated. If “happiness death” existed, I might have been fatally close.

“Mmm… Sotomichi-kun… you’re awake.”

Sensing my breathing and warmth, Yamamoto-san woke up too. Our eyes met, and she pressed me deeper into her ample bosom. The dense fat left no room to breathe, and as I mumbled, she replied, “Uh-huh, I slept well too.”

“Mgh… ugh… I’m… dying…”

“Oh, sorry. My brother visited recently, so I did it without thinking.”

I didn’t understand the “did it without thinking” but apparently, her brothers endure this breast press regularly. They’ll have a hard time in the future.

“We slept for about five hours. How are you feeling?”

Yamamoto-san checked the time with one arm still holding my head. She eased the pressure, but kept me close. It felt like being treated like a child… and it wasn’t bad.

“I’m energized.”

I feigned calmness, moving my waist to hide my fully erect penis from her. But she noticed, and her hand quickly found it under the covers.

“You’re full of energy.”

She slipped her hand into my pants, gripping my penis directly.

“Can’t help it after that.”

Waking up to breasts—I had no choice but to get hard. From last night’s intimacy with Miyu to waking up next to a beautiful girl, when did my life become so blessed?

“Do you like breasts?”

Yamamoto-san emphasized her perfectly shaped breasts, even lying down. Memories of our school encounter made my erection harder.

“Breasts are…”

No man dislikes them. After ejaculating so much into her breasts at school, she knew I liked them. But my “like” was different. I’d lived with Miyu’s ample chest daily, even in the bath and bed recently.

Yet, I was forbidden to touch them. Like Yamamoto-san’s frustration with sex, I had years of pent-up desire. Sachiko was well-endowed, but Miyu and Yamamoto-san were on another level. If they let me enjoy them fully, I’d gladly shorten my lifespan.

“Breasts are… well… I’m quite fond of them…”

“Hmm. I see.”

Yamamoto-san tightened her grip, stopping the blood flow to my penis, as if punishing my uncontrollable arousal. Her skin, different from my own, enveloped my shaft, and I felt the pulse of my veins.

Having my penis held by someone else always thrilled me. Thinking of Miyu, I was completely aroused. As a brother, I had no excuse, but it was also Yamamoto-san’s breasts’ fault. No man could resist two beautiful girls’ eros.

“You like them that much.”

Yamamoto-san began moving her hand. Just a handjob, yet her palms were incredibly soft.

After enjoying my reaction, she urged me to remove my pants. I lifted my hips, and she quickly undressed me.

“Ahh… that feels good…”

“Hey, Sotomichi-kun.”

As she stroked me, she lifted her T-shirt to her chest, revealing her gleaming lower breasts.

“Do you like breasts?”

“Ahh… yes… I do…!”

My body heated up instantly. Yamamoto-san quickened her strokes, and the mood became intensely erotic.

I felt pathetic being led by her, but I hesitated to touch her beauty freely. Though I knew she’d forgive anything, Miyu’s restrictions made me cautious.

“You’re honest and good.”

She stroked my glans. Praise, rare for me, made my heart flutter.

“Umm… can I… touch your… breasts?”

Saying it out loud made it sound like a raw demand. Stimulating her nipples would be a standard prelude, but asking to touch her breasts felt like *her* rewarding *me*—a reversal of roles.

“Hmm…”

Yamamoto-san hesitated, then slowly lifted her shirt, revealing her lower breasts. Thinking I’d misstepped, my confidence dipped—until she grabbed my hand, pulling me closer.

“Go ahead.”

She fluttered the hem of her T-shirt.

I was to reach inside.

“Your breasts are… so big…”

I hesitantly slipped my hand inside Yamamoto-san’s T-shirt, sometimes losing my way. Though we’d already been intimate, sneaking my hand into her clothes felt thrilling. Meanwhile, she continued stroking me.

The thin T-shirt revealed only the shapes of Yamamoto-san’s breasts and my grasping hands. Her breasts were incredibly soft, like freshly cut melons with a marshmallow-like texture. Unlike Miyu’s firmer breasts, Yamamoto-san’s flesh clung to my fingers. I couldn’t believe I’d sandwiched my penis between such softness.

“Haa… haa… Yamamoto-san… um…”

I needed to go further. Just fondling her breasts wouldn’t be enough to pleasure her.

“Can I… touch the tips too?”

Erotic zones are delicate, forbidden areas, but in sex, touching them is essential. The forbidden nature of it is what makes sex so exhilarating.

This all-or-nothing aspect of intimacy is tricky. Yet, compared to Miyu’s sensitivity, Yamamoto-san was the opposite—a gentle, Buddha-like presence. I had nothing to fear. After all, I’d done far more with Miyu.

“You want to touch the tips too?”

Yamamoto-san smiled, leaning closer.

“Make me feel good.”

Her breath sent shivers down my spine, and my determination grew. She asked me to touch her, to give her pleasure. As a man, there’s no greater joy.

“Mmm…”

As I touched her nipples, Yamamoto-san tensed. Her nipples were slightly larger than Miyu’s, fitting perfectly between my fingertips. Their hardness suggested she was aroused.

“How should I touch them?”

I was almost like a virgin when it came to foreplay. With Sachiko, I’d been too focused on ejaculating without using Miyu as a fantasy, lacking tenderness and consideration. Luckily, she enjoyed our intense sex. As a man, I’d never properly pleasured a woman.

Yamamoto-san, on the other hand, was experienced and skilled. I lacked the dexterity to match her experience. Whether I seemed clumsy or not, I had to ask her what she wanted. After exposing my inadequacies to Miyu so many times, I no longer had any pride as a man.

“Soft touches would be nice.”

“Got it.”

I stopped flicking her nipples and gently rolled them between my fingers, caressing her soft skin.

“Mmm… haa… that feels good, Sotomichi-kun…”

I didn’t forget to caress her breasts, occasionally teasing the area around her nipples with my fingertips.

This reminded me of how Miyu’s licks felt.

“Faah… mmm… that feels so good… ahh…”

Yamamoto-san moaned.

I was making her feel good.

“Yamamoto-san… ahh… ugh… I feel good too…”

Yamamoto-san quickened her hand movements, intensifying my pleasure. Though we weren’t penetrating, the mood heightened as we pleasured each other.

“Mmm… ahh… Sotomichi-kun’s… so wet… Your hardness and pre-cum are amazing, no matter when I touch you…”

Yamamoto-san scooped up my pre-cum and spread it on my penis. Using the slickness, she stroked me with long, careful strokes from base to tip, repeatedly savoring my hardness.

For Yamamoto-san, this must have been her first time giving such a prolonged handjob during foreplay. Other men would ejaculate just from her allure. For her, my sustained erection was a source of joy.

“Haa… um… this…”

I pulled lightly on her nipple, drawing her attention.

“Can I… suck it…?”

I blurted it out. I wanted to devour her breasts, not just touch them. I wanted to be close, to feel her fully.

“Hmm… What should I do…?”

Yamamoto-san smiled but hesitated. The mood was perfect, our minds tinged with pink.

“Well… if it’s you, Sotomichi-kun…”

She lifted her T-shirt, exposing one breast.

“Here you go.”

She blushed, holding the hem of her shirt. Could I really take this enticing fruit into my mouth? I couldn’t stop now. I’d always wanted to suckle on large breasts. Being invited like this, I couldn’t resist.

“Yamamoto-san… mmm…”

I instinctively latched onto her breast. The firm nipple on my tongue felt satisfying. Though no milk flowed, something filled my throat.

“Ahh… mmm!”

Yamamoto-san’s moans grew more sultry. Just as she wanted gentle touches, she’d want gentle suckling. I relaxed my tongue, rolling her nipple in my mouth.

“Haa… mmm… that feels so good… Having Sotomichi-kun suck on my breasts is amazing…”

Yamamoto-san pressed her breast into my mouth, clearly feeling genuine pleasure. I could do this for hours if it made her happy.

But another desire emerged. I wanted to suck harder, nibble, flick my tongue, and devour her entire areola. The conflict between my raw desire and my wish to please her waged within me.

“Mmm… you’re so into it… I wonder how this feels…”

Yamamoto-san squeezed the base of my penis, sliding her finger over the tip to collect pre-cum.

“Hehe… since you’re taking my boobies milk, you’re going to give me your naughty juice…”

Her renewed handjob was incredibly smooth, like using lotion. Her fingers, catching on my ridge, felt like flesh, creating an illusion of being inside an onahole.

Thrusting my rigid penis, I felt intense pleasure in her hand. It was far better than an onahole. The raw sensation was more vivid than even sex with Yuka using a thin condom.

“Ahh… mmm… having my hand thrust into… it’s making me feel good too…”

Yamamoto-san held her hand still, welcoming my thrusts. She placed her other hand on my head, bringing her breasts closer. Using her entire palm, she gently warmed my head from forehead to nape, stroking my hair.

My thoughts faded, leaving only the desire to suckle and thrust. No matter how vigorously I moved, her hand maintained its shape. Her devotion drove me to thrust deeply, again and again, exposing my raw desire.

“You’re so eager, Sotomichi-kun, it’s cute.”

Being stroked, savoring her breasts, and hearing her gentle voice, my brain melted in bliss. Sucking her breasts and getting hard made Yamamoto-san happy, and that made me happy.

“Ahh… mmm… you’re so good at sucking breasts… It’s okay, Sotomichi-kun. Do whatever you like. Suck hard, move your hips as much as you want.”

With Yamamoto-san’s permission, I sucked her nipples like a baby seeking milk, squeezing her breasts as if crushing fruit. I spread my legs, thrusting my entire penis into the “flesh hole” she created with her hand, moving my hips back and forth.

“We’re going to have lots of sex, so we need plenty of practice.”

Yamamoto-san let the futon fall from the bed, watching me drown in desire. I clung to her breasts, rubbing my penis against her—a hole that couldn’t impregnate her even if I ejaculated.

“Come on, move it front to back.”

“Mmm… mgh… nh…”

“One, two. One, two. Hehe, good job.”

It felt different from when I was with Miyu or when I assaulted Yuka. Something important, built up over my growth, was rapidly fading. Yamamoto-san patted my head, saying, “You’re really like a baby now.” No matter what I did, she praised me. That reassurance melted my heart.

“My sweet Sotomichi-kun. After having sex with your little sister, you wanted to have sex with Mommy, huh?”

Ejaculating into my real sister. Clinging to a classmate like a baby. I’m an incorrigible siscon and mama’s boy.

But it can’t be helped. They accept me, flaws and all. No matter how clumsy, they have sex with me. Even if I ejaculate painfully, I can’t leave this happiness. Maybe soon, I’ll do this with Miyu too…

“Ah, mmm, aah, it’s… coming…!”

The sensation of her breasts and the pleasure of her handjob, mixed with thoughts of Miyu, rapidly swelled my desire to ejaculate.

“Oh dear, what should I do…? Alright, got it!”

Yamamoto-san pressed against me, sandwiching my penis between her thighs. The unfamiliar flesh stimulated my penis, instantly breaking my resistance.

“Ugh, guh, ah, it’s coming, it’s coming──!”

*Splurt, splurt, doop*──! I released a massive amount of semen between Yamamoto-san’s thighs. The sense of soiling her felt stronger than when I ejaculated in her mouth, and the guilt further fueled my release.

“Whoa, I released so much, what do I do?”

“It’s probably fine. I don’t think the bed’s dirty.”

Yamamoto-san lay on her back, folding her body. She lifted her T-shirt to her neck, exposing her stomach, and spread her thighs. The copious semen trailed, landing in her navel.

“At this rate, my panties might be wet.”

“Ugh… sorry…”

“It’s okay. Don’t worry.”

Yamamoto-san wiped the semen with tissues from the bed. It took several tissues to clean it all.

“You ejaculated just from thinking of Miyu-chan, huh?”

“I tried to resist, but this is how it ended…”

“Ufufu. You’re so easy to read, it’s funny.”

Yamamoto-san poked my still-hard but spent penis.

After playing with it for a while, she smiled.

“Let’s have dinner.”

“Is that okay? I thought I could at least penetrate you. I feel bad for ejaculating so much without doing anything…”

Worst case, we might end today without actual sex. Yamamoto-san invited me for sex, yet I’m the only one benefiting.

“Hmm…”

But Yamamoto-san glared at me, dissatisfied.

Déjà vu.

“Where’s the cute Sotomichi-kun from earlier?”

She suddenly hugged me, pulling me onto the bed.

“Whoa!?”

And, like earlier, she smothered me with her breasts.

“Ugh… ugh… ugh…”

“Now-now-so-to-mi-chi-kun.”

Her marshmallow breasts sealed my mouth and nose, cutting off my breath.

“Ugh… ugh…”

“Have you reflected?”

She released me, letting me fall onto the bed.

I thought I’d die.

“Guh… ugh… I’m sorry. But I thought you’d be frustrated if we didn’t have sex…”

“Really? Did I seem that bored?”

“Not at all.”

She seemed to enjoy it. But foreplay and sex are different, and I ejaculated on my own.

Though, Miyu did say a woman’s satisfaction isn’t just about orgasming. Maybe Yamamoto-san was truly fulfilled.

“Well, if that’s the case, let’s eat.”

“Right. We can have erotic moments again after eating. The earlier session was fun too.”

Yamamoto-san adjusted her clothes, straddling me to get off the bed.

“Was it fun for you, Sotomichi-kun?”

She combed her hair, glancing at me sideways, as if to hide her embarrassment.

“Well…”

I never thought I’d experience something like that in real life.

“It might’ve been the most fun in my life.”

I shouldn’t have added “might’ve.”

It was absolutely the most fun.

“Hehe. Thank you for the kind words.”

Yamamoto-san skipped back to the kitchen. Since she seemed so happy, I knew I’d made the right choice.

“Can I help with cooking?”

I sat up, dressed, and asked Yamamoto-san, who was wearing an apron.

“It’s too cramped for two. Thanks anyway.”

Yamamoto-san’s cooking skills rivaled Miyu’s. It’s hard to say who’s better. But to be clear, Miyu is far better than me.

“After dinner…”

I had to ask Yamamoto-san something. Our goal was to have sex. After dinner, the conversation should lead to more intimacy.

“How far will we go today?”

Asking a woman about sex timing is unmanly, but after the delay, I wanted to respect her wishes.

“I want to have sex, but there’s no rush.”

She replied while peeling vegetables. “Wanting sex but not rushing” was cryptic. Did she want to wait until I was more energized, or would we continue after dinner without penetration?

Yamamoto-san had been desperate for sex, yet her enthusiasm for penetration seemed low. She’d fallen asleep earlier too. Thinking about it, she’d only been frustrated by denied orgasms, not the lack of full sex.

In any case, we’d likely be intimate, so I should rest instead of half-heartedly helping. People who insist on helping often enjoy being allowed to serve.

“I’ll rest until dinner’s ready. Call me if you need anything.”

Maybe it’s better to let Yamamoto-san handle everything. She smiled, her lips curling.

“You’re starting to understand, Sotomichi-kun.”

Yes, she’s that type.

My role is to fully receive her devotion.

I’ll try my best. To enjoy it.

“But, Sotomichi-kun, I should ask too.”

Her tone was tense. My ears perked up.

“Do you want to have penetrative sex soon?”

I’d asked about sex so much, she worried I was desperate for it.

“Not at all.”

I still want to have sex to finally get away from Miyu, but I’m not eager for it. I’ve had those erotic moments before, and Miyu constantly rejects me, so I’m used to it without penetration.

“Good. I’m also thinking of ways to make you happy.”

She resumed cooking, her skilled hands now accompanied by humming.

“Let’s make it a fun night.”

I simply replied, “Yeah,” and lay on the bed, immersing myself in the afterglow of our earlier intimacy. I spent my time in decadent relaxation, playing games until dinner was ready.