My Little Sister Is the Best F*p Material - Volume 8 Chapter 05: Magic

Volume 8 Chapter 05: Magic

Yamamoto-san and I were back in line for another attraction. The dimly lit hall was filled with ethnic decor—coffins, Tutankhamen statues, and the like.

This adventure-themed ride, inspired by a movie, took us through a pyramid on a trolley coaster. With gentle slopes and moderate speed, it wasn’t classified as a thrill ride. But the eerie props and the cart’s shaky instability made it scarier than other attractions, earning it a fan favorite status.

Over an hour had passed by the time we could see the front of the line. How did we spend that time?

“Sotomichi-kun… mm… chuu…”

“Y-Yamamoto-san… licking there again…”

“Lick… chuu… I’d rather kiss your lips, but…”

“Even if it’s dark, that’s too much… ugh, ahh…”

We were all over each other. Surrounded by people, Yamamoto-san hugged me from behind, and we spent most of the wait pressed together.

Now, we were looking at my phone. Ride wait times get boring, so I’d downloaded some movies tied to the park’s themes. When the line stopped, she’d cling to me from behind; when it moved, we’d link arms and walk together. When we stopped again, she’d wrap her arms around my waist, pressing her soft body against me, teasing my lower half with her fingers or tickling my neck with her lips.

“Ever since we kissed…”

She nibbled my ear from behind. If we weren’t in public, my pants would’ve burst.

“Was the kiss that big a deal?”

We’d been intimate so many times but never kissed until today. It felt special to me, but surely it wasn’t her first kiss.

“I decided not to kiss you until we were seriously in love.”

It was intentional. Somehow, that couple’s melon soda on the terrace broke her restraint.

“Why’d you do it then?”

She hugged me tighter, her hot breath grazing my ear.

“Because… I realized I really love you, Sotomichi-kun. Since that moment, I’ve been in full-on lover mode…”

Her love makes her lust stronger. Her feelings for me surpassed anything she’d felt before, and this excessive closeness was proof of her blind devotion.

She had her own motives—bracing for a tug-of-war with Miyu and wrestling with her confused feelings. That kiss seemed to blow it all away.

“You’re in a great mood.”

“I can’t do this with anyone else.”

“Right.”

I’d forgotten—thanks to Miyu, my body’s uniquely equipped. Other guys couldn’t handle her stimulation. Ejaculating here would ruin the ride.

“At home, maybe, but out here, just hugging like this? Most guys would lose it.”

Dating her makes it clear. How many spare pants would I need for a trip with her?

“So, I decided to go all out with you.”

Seeing her radiant, sultry expression—freed from her body’s burdens—filled me with pride.

In that high mood, it was time to board. We climbed into the trolley, fastening simple safety belts. The cart’s edges were high, and the course wasn’t too steep, but safety was a must to keep the park running. A standing coaster was bold enough. Each group got one cart, unlinked, with about eight in a row. We were at the back.

“Hold the handrail tightly, they say.”

“Can’t cling to you for a bit…”

“It’s just a minute.”

This clingy Yamamoto-san was rare. I’m weak to gap moe—Miyu’s the same, irresistibly cute when she’s needy. Yamamoto-san was no exception.

“If that’s the case, want me to hold you from behind?”

I could fit my arms between her and the handrail. Boyfriend-like or not, I wanted to do anything to make her happy.

“Yes, please! Can you?”

“Sure.”

She stood in front, within the belt’s range, and I wrapped my arms around her, leaning in.

“Eek! Sotomichi-kun’s hugging me…!”

“How much do you like me?”

It’s a trolley, so the climb is short. After queuing up stairs, eerie sounds and figures startled us as we descended slowly.

As the trolley moved with gaps between carts, the crowd faded from view. Hugging her from behind, I realized our positions had flipped. Her heels made her slightly taller, but our faces were close enough for our cheeks to brush.

“Yamamoto-san.”

It was my attempt at being the best boyfriend. She turned from the scenery, meeting my gaze.

Up close, our eyes locked—like Miyu taught me—I glanced at her lips. She caught my intent.

“Mm—”

Our lips met, a soft moan escaping. In the dark, we shared a fleeting moment of love. Her body heat spiked, warming me. Even a light kiss stirred something deep within her.

As it ended, the area brightened, signaling the coaster’s start… or so I thought. But Yamamoto-san, unsatisfied with a peck, turned fully, hugging me tightly and extending her tongue. She pulled mine out, sucking with lewd slurps. Screams from other guests echoed ahead, but we devoured each other’s lips in a frenzy.

“Mmm… slurp… chuu… haa… Sotomichi-kun…”

“Mm… ah… I love you, Yamamoto-san…”

“Me too… I love you… really love you… chuu, slurp… smack…”

I pressed my swelling groin against her, driven by lust. She pushed back, grinding her hips to stroke my penis through our clothes.

As we indulged in this indirect yet heated act, the cart jolted with a clunk, forcing us apart.

“Ah… hehe, too much?”

She licked her lips, wiping saliva. Her sultry look was pure succubus.

“I love you so much, I’m losing my mind.”

“Happy to hear it.”

The cost was steep—my erection wouldn’t quit.

“I’ll take care of it when we get off. Hold on.”

She faced forward. No clue where she’d “relieve” me, but I just had to endure this minute. I leaned over her again, gripping the handrail.

Then, the trolley shook violently—

“Nn, ah…! Sotomichi-kun, that’s… no… ahh…! The vibrations… so deep…!!”

The height difference brought an unexpected issue. My bulging pants pressed right against her sensitive spot. As the cart rocked, vibrations from my erection stimulated her like a vibrator.

Normally, she might’ve brushed it off, but after that kiss, she was at peak arousal. She might’ve felt it even without direct contact.

The winding track neared the exit. At the ride’s climax, the trolley sped up on a straight path, pressing us back with strong G-forces. My rock-hard penis pushed into her groin.

“Ah—!! I… I’m… cumming…!!”

As the trolley slowed to avoid lurching, Yamamoto-san clung to the handrail, legs trembling, barely standing. Already pent-up from abstaining, she couldn’t resist my penis teasing her entrance. She climaxed before the ride ended.

As the cart stopped, we steadied our breathing.

“You’re too sexy, Yamamoto-san.”

“Because you did naughty things…”

Murmuring happily, she stayed close as we disembarked to retrieve our bags from the locker. She’d climaxed, but my erection lingered. She shielded it with her body and bags.

“How’re you gonna take care of this?”

My arousal was her fault, so it’s her duty to make me cum.

“I’ve got the perfect spot. Leave it to me.”

I thought Yamamoto-san might be heading for the hotel she mentioned at entry, but that was just an option she’d thrown out. Instead of moving toward a hotel, we were drifting further from the park’s main area, eventually reaching the exit gate.

“Leaving?”

“You can re-enter the same day, so it’s fine to step out.”

That was a blind spot. The park was packed, with no private spaces except maybe a hotel, and even same-day bookings were iffy in this crowd. Outside, away from the station, it was practically deserted.

“Outside the park… there’s nothing, though.”

No people meant no appealing spots to visit. No karaoke or internet cafes for quick hookups. Outdoor sex might be an option, but this coastal area had little cover for privacy.

“There’s the sports park, right?”

Yamamoto-san’s destination was a free public park. It was sparsely populated too, but with no buildings, hiding spots were scarce. Or so I thought—until the answer hit me.

The rundown public restroom at the sports park. Unlike urban ones, it was rarely used unless absolutely necessary.

“We’ve got time, so instead of a hotel sex marathon, I thought we’d take care of you quick and head back.”

Her smile was refreshingly candid. Even the most sex-loving girl wouldn’t be this nonchalant about it.

Holding hands, we headed to the park and entered the restroom at its edge. Maintained well for a municipal facility, the stalls were spotless.

“Alright, Yamamoto-san. I’m counting on you.”

We slipped into the deepest stall, and I exposed my erection. Heavy from Miyu’s abstinence order, my thick shaft glistened with precum. Yamamoto-san, casually leading me into the men’s restroom, knew exactly how she’d be used.

“My mouth’s like a toilet for your cum, so go wild… but save some for tonight, okay?”

Crouching at toilet height, she looked up pleadingly. Even as a girlfriend, she saw herself as a tool for my release. Why do cute girls like her and Miyu want to be my personal sex toys?

“One round’s enough. But I’ve been holding back, so I’m super pent-up. It’ll be thick. You good?”

“Yeah! I’ll do my best to swallow. Scold me if I mess up, okay?”

Scold her? No way. Though, that kind of play sounds hot.

“Here’s my service blowjob for you… kiss… suck… slurp… smack…!”

“Ugh, ahh… haa…!”

Without hesitation, she started sucking. More pent-up than me, she made lewd noises in this near-outdoor stall, devouring my cock.

“Slurp… gasp… Your cum taste… suck… so good… haa… slurp, smack, gulp…!”

She licked meticulously, aggressively, aiming to make me cum. Not for her pleasure—she wasn’t masturbating or rushing to return. It was purely to get me off.

“Suck, smack… chuu… You can cum anytime, don’t hold back… suck… sluuuurp…!”

“Ugh… kuh…!”

Her sole intent was to make me ejaculate. No mutual pleasure, no playful pretense—just a girlfriend helping her boyfriend unload.

“Ahh… ah… no mercy like that… ugh, haa, ahhh…!”

A girlfriend performing a purely functional act for lust. She knew it drove me wild. Her realist mindset echoed the depraved experiences I’d shared with Miyu—

“—!! Haa, ugh, ahh… I’m cumming, Yamamoto-san…!!”

Spurt, gush—I unleashed into her mouth, swept by excitement. Naturally, almost intentionally, I came normally from her blowjob.

“Ngh… mm, mmm…!?”

It caught her off guard. Struggling not to spill the massive load, she faced my semen, as thick as when I cum for Miyu—hard for anyone else to handle.

“Gulp… gasp… I drank it.”

Eyes red and teary, she swallowed. Determined not to lose to Miyu, she rolled the semen on her tongue before gulping it down.

“Thanks. I’m good now.”

She sucked out the remaining cum from my urethra, carefully licking off the saliva, and pulled away with a pop.

“Hehe, it came out so smoothly.”

This wasn’t just her making me cum. I could now control my ejaculation with her—not cumming instantly or struggling to finish. I might still need Miyu as a mental trigger when I’m off, but for now, our issues were resolved in sync.

“I felt close with your blowjob, so I didn’t hold back.”

“Really!? Yay, all my effort paid off!”

Our relationship started because I couldn’t cum without thinking of Miyu. Resolving that felt profoundly satisfying.

“Thanks for doing this here.”

“No problem. I’ll make you cum anywhere.”

Beaming, she opened the stall door. Her sharp senses let her hear if anyone was nearby, so in this quiet place, we slipped out easily.

Stepping out of the men’s restroom, a wide plaza stretched before us. The post-ejaculation view felt refreshingly clear.

“Wait here a sec, Sotomichi-kun.”

Yamamoto-san bought water from a nearby vending machine and ducked back into the restroom. A few minutes later, she emerged with an empty bottle, tossing it into the bin beside the machine.

“What’s up?”

“Just freshened up my mouth. I want to kiss you more.”

“Got it. Thanks.”

She kept a toothbrush in her pouch, clearly prepared for blowjobs as a given on our date.

We re-entered the park, riding attractions to our heart’s content, eating at restaurants, and strolling past movie-inspired bridges and fountains, sneaking cuddles on nearby benches.

Yamamoto-san constantly told me she loved me, and each time, we’d sneak kisses out of sight.

Being with her was endlessly fun. No matter where or what, I felt pure happiness.

So much so, I never wanted to let this joy go.

“Yamamoto-san.”

“What’s up, Sotomichi-kun?”

As dusk crept into the sky, we gazed at a quiet lake from a less crowded plaza. Day-trippers chasing rides had left, but the stillness wasn’t just from that.

“Come closer.”

I wanted to kiss her.

When I said it, she happily faced me, tucking her hair behind her ear.

We were already holding hands, but it still felt too far for a kiss.

“Don’t mind passersby. Let’s do it a lot.”

We embraced and kissed. A parade had started elsewhere, drawing most guests. Characters on themed floats counted down to the fireworks, a special end-of-summer event everyone anticipated.

We’d planned to join, but this quiet space, with distant cheers and electronic sounds, felt perfect.

“Haa, haa… chuu… Yamamoto-san…”

“Mmm… gasp… haa, haa… smooch… Sotomichi-kun… chuu… mm…”

A meltingly passionate kiss wrapped us in sweet euphoria, like sinking to the lake’s depths. I was already smitten. A life without her was unthinkable. This park day made it clear—letting go of someone who loves me so purely would be foolish.

Kissing, hugging, we lost count of how many times, driven by insatiable desire, craving each other fiercely despite passersby.

“Hey, Sotomichi-kun.”

Our lips parted, and I felt a pang of loneliness.

Her eyes locked onto mine.

“From now—”

Her lips moved silently in my vision.

“—let’s watch the fireworks together.”

The sound reached me late, the world in slow motion. She spoke again, slowly.

“—then at my place tonight, let’s have lots of sex.”

Her voice lagged, but I understood just from her lips.

“—and then?

When we’re exhausted from sex, we’ll sleep tangled together.

When we wake, we’ll laze around aimlessly, kissing whenever our eyes meet.

I’ll eat the breakfast you make.

While getting ready to go out, you’ll get horny.

So we’ll have casual but hours-long sex.

And after that, you and I—”

Her next words made my heart leap. I couldn’t calm my racing pulse. I wanted to accept her offer.

“Let’s get married.”

Her eyes were clear, her words sincere—if I agreed, she’d mean it. I pictured that future as real. We’d just hit the legal marriage age; we could wed. My parents wouldn’t object to her, and her free-spirited nature meant her family likely wouldn’t either.

But I have Miyu.

“Let’s live together, the three of us. You and I marry, and Miyu stays as is. I’m fine with that. I don’t care how much you sleep with her.”

It was a dream offer. Anyone in my shoes would see it as the best path to happiness.

“You can even have a baby with Miyu.”

Miyu and I are siblings, blood-related, legally unable to marry. A child would be a single-parent on paper. But with Yamamoto-san’s marriage, we could all be a family under adoption.

No societal guilt. Three of us supporting a household would be easier than a typical couple, adding color to life.

So, I said it. I had to.

“I want to live with both of you.”

Boyfriends, girlfriends, romantic vibes, amicable breakups—forget all that. I just wanted to be with my two beloved women.

I felt it deeply. I wanted to keep kissing Yamamoto-san, to live forever in this bright, joyful time.

“But I can’t marry.”

The words came naturally, not fully reasoned. It was just what I had to say.

“So, can’t we live together as we are, the three of us?”

I’d sorted my feelings for Miyu and clarified my love for Yamamoto-san. It was pure, no different from what I felt for Miyu. I believed I could love them both equally.

Because Yamamoto-san made me feel that way.

“Hehe, got it.”

She smiled gently. Her marriage proposal wasn’t a joke, yet there wasn’t a hint of regret.

“Ugh, what am I saying? You’ve got Miyu-chan.”

“Huh…? Y-yeah. So, you, Miyu, and me, together…”

I’d blurted it out, enchanted by her entirely. It was my subconscious answer, rooted in the real love I felt for her, planted during a sleepover at her place and unearthed during our vineyard date. Like hypnosis, I couldn’t erase my feelings for her.

This moment of realization might have been a kind of subconscious trance until now. But the love I felt was real, undeniable, and unchanged—a truth without a shred of falsehood.

I was genuinely in love.

“That’s not enough. As things stand, I can’t even be your equal first with Miyu-chan.”

I thought living together as three was fine—her goal, even. I was right, but I’d overlooked a crucial part of her character.

She’d confessed her frustration at the end of that sleepover, how she wanted to be my closest. Even when half-jokingly filling out a marriage form, she’d murmured it with loneliness. She always wanted to be nearest to me.

Being loved second to Miyu wasn’t enough.

This was her first true love, the kind that comes once in a lifetime.

“…I see.”

Once I understood, accepting reality was quick.

The heat drained from my body, like a spell breaking.

This was the grace period Miyu gave us. No matter how we tried, it couldn’t go further. As long as we were satisfied, it would end.

Yamamoto-san, accepting it fully, flashed a bright smile.

“Ugh, Miyu-chan got her way until the very end.”

“Can’t help it. That’s my sister.”

“Yeah.”

Miyu let Yamamoto-san throw her all into it, knowing some things couldn’t be changed. Understanding her own overwhelming allure, Miyu ensured a clean resolution by letting Yamamoto-san act freely, without holding back. That was Miyu’s plan for the smoothest breakup.

“Miyu-chan really went all out. Lucky I was so into it. If I’d given up with a ‘be happy,’ this plan wouldn’t have worked.”

“True. Miyu was probably half-gambling on it.”

She acted confident, maybe to encourage me. Either way, it’s settled peacefully, so it’s fine.

“Then, shall we…”

The parade was ending, so I turned to suggest moving to see the fireworks. Just that.

“Wait…!”

Yamamoto-san grabbed my arm, so hard it hurt.

Startled, I shook her off, and her face looked on the verge of tears.

Trying to cover the awkwardness, she forced a smile, spreading her arms.

“Ah… s-sorry. Since we’re here, want to keep going until the end?”

“That’s my plan. The fireworks are starting, so I thought we’d move.”

We explained ourselves. On the surface, it was natural.

As we walked toward the fireworks, she didn’t follow. A gap grew between us. When I looked back, she was meters away, staring tensely, her face strained.

“…I’m sorry.”

Her voice trembled with an apology. Grabbing my arm had betrayed her true feelings.

“Uh… um…”

Her frail voice continued.

Right. She couldn’t give up so easily.

If it were that simple, she wouldn’t have cared so much. She supported my relationship with Miyu, so she could’ve ended it with a “be happy” instead of this messy, unethical date. But she couldn’t, which is why we got so tangled.

Miyu knew. The moment Yamamoto-san broke her promise to part ways, her mind became a chaotic mess, beyond her control. No rational thought about my existing relationship could stop it. Since I rejected her, her kindness—built on her boundless excellence—crumbled under her own contradictory thoughts and actions.

“Let me ask one last thing.”

She knew she shouldn’t voice it, a thought with no anchor.

“If I hadn’t supported your love with Miyu-chan back then…”

Her feelings spilled out despite herself.

“If I’d stepped up to be your girlfriend…”

Desperate to fight this reality, clinging to an impossible what-if world.

“Could we have been real lovers now?”

A breeze stirred her hair in the quiet space. Beyond the fence, the dark lake shimmered with waves.

I hesitated, but the answer came intuitively, brutally honest, bound to hurt her.

I didn’t want to wound her, but lying wasn’t kindness. Even if it hurt, sincerity was my choice.

“We’d be together. If you hadn’t pushed me back then, I’d have chosen you, no doubt.”

That was the truth. If she’d loved me then, there’s no way I’d have picked Miyu over her.

If that had happened, I’d be here now, dating her as my girlfriend.

“…I see.”

A sigh of resignation escaped her. Her voice carried closure. The contest between her and Miyu ended, and so did our future dates.

Our pretend lover relationship was over. Realizing this, we didn’t know what to say, and silence fell.

The crack of fireworks broke it. Colorful lights lit our faces, followed by more bursts. Great blooms of light bloomed and faded in the night sky. Wordlessly, we listened to their sound.

This was supposed to be the date’s highlight. Holding hands, sharing the view, making precious memories. We’d dreamed of it, but now, our time as lovers felt hollowly spent.

It was the signal of the end. My love with Miyu meant some things were lost forever, something we’d dodged in this ambiguous relationship.

The love Yamamoto-san hadn’t fully acknowledged was now undeniably real. Her heart, long past its limit, overflowed.

“──────!!”

Her cry was drowned by the fireworks.

She buried her face in my chest, sobbing violently, perhaps the saddest she’d ever be. Pouring out regrets and selfishness, gripping my hand painfully, her trembling body conveyed her diaphragm’s spasms.

Her tears soaked my shirt, hot and cold at once. As her sobs faded into the fireworks, I clenched my teeth to hold back tears, only able to stroke her head as she wailed in my arms.