Little Sister, Don't Use Me as Your Fap Material! ~Operation to Capture the Perverted Brother-Sister's Special Fetish Girl~

Chapter 13: Caught in the Back Seat

After Madoka had somewhat regained her composure, we got into the taxi we had called in order to carry out the Midorigawa Kaede Conquest Operation.

“Please take us here~”

『You got it! Whoa, you’ve got a real beauty with you there~♡』

The driver was a friendly, chatty old man. Judging by his face, he was almost certainly a massive pervert.

“Ehehe, I get that a lot!”

There’s no doubt my little sister is exceptionally beautiful, but her brain is also three times more “special” than the average person’s.

『This is exactly what they mean by “Beauty and the Beast,” huh?』

“I get that a lot too.”

This old man really isn’t suited for customer service.

After giving him the address of a random apparel shop near the abandoned building, the taxi started moving.

『Are you two a couple?』

The talkative driver immediately started chatting with us.

“No way lol, we’re siblings. Siblings. In a world where a plain guy like him could date a super beautiful girl like me, your wife would be a Hollywood actress by now lol.”

『Haha! Me married to a blonde actress? That’d be one hell of a world!』

While half-listening to their meaningless, lame conversation, I glanced at Madoka’s chest beside me.

Even in the dimly lit car interior, the seatbelt sharply divided her breasts, making each one stand out even more clearly.

This was the very definition of “paizuri rush.”

The tight black vertical-striped knit already emphasized her “tit bags,” and now with the added effect of the seatbelt, her breasts had taken on an almost “anime-like” shape.

Uhyohyo~ These are some seriously enjoyable tits♡♡♡

To be able to monopolize such attractive breasts from the best seat in the house — how blessed am I?

Good thing the sun had already set.

If it were still bright inside the car, this perverted old driver might have gotten distracted by the spectacular view from the back seat and caused an accident.

『I’ve got a son about the same age as you two. Are you guys high school students?』

“Yes, we both attend Eguchi Sugi Academy.”

『Ah~ That private school that used to be an all-girls school until about four or five years ago. My son wanted to go there too because he heard the ratio of girls is still high and there are lots of beautiful ones.』

Of course, that “lots of beautiful girls” part was exactly why I chose to enroll there.

Now that we need Aninael Antibodies, and knowing that the condition for being a Spell Master is “girls with abnormal sexual fetishes,” the high number of beautiful students is honestly a stroke of luck.

『Just as the rumors say, you really are a beauty, young lady~♡』

“Thank you! By the way, not to brag, but I’m the number one beauty in the entire school!”

“Ehe~” Madoka puffed out her chest with a proud look.

『Wow, it’s an honor to meet you♡ I’ll have to brag to my son when I get home!』

……Hmm? Number one in the school?

What is this girl talking about in her sleep? Has her brain finally boiled over?

If she said “number one in our grade,” maybe, but in the third year we have Midorigawa and Momose.

Even with heavy brother bias, Madoka would be lucky to rank around 6th.

『With a face like that, you must be super popular, right?』

“Yes, I’m so popular it’s actually troubling~”

Is that true?

“I get confessed to by like ten people every day, it’s really hard~”

She’s exaggerating quite a bit…

“Just the other day, the baseball club and soccer club even had a huge fight over me~”

That’s a completely made-up story…

And why is it a group battle between clubs?

Does the winning club get to gangbang her or something?

『So, does a cutie like you have a boyfriend?』

“No, I don’t.”

『Guess there aren’t many guys who can match up to you, haha.』

“That’s part of it, but I also have a troublesome idiot brother to take care of, so I’m pretty busy with that right now~”

『Haha, you’re lucky, young man. Having such a cute little sister to keep you company. With her around, even a girlfriend-less high school life must be fun!』

……Could you please stop assuming I don’t have a girlfriend?

『So, are you two on a sibling date today? You seem really close~』

“Yes~♡ We’re living together, just the two of us right now.”

『What about your mom and dad?』

“They’re away for work for a while. It looks like they won’t be coming back anytime soon.”

『That must be lonely~』

“Not at all~ In fact, it’s lucky because I get to flirt and do whatever I want with Onii-chan♡”

『Haha, you two are pretty passionate~ I’m jealous~』

Yeah… there’s no way we could let our parents see what we’ve been doing lately…

『By the way, what kind of work do your parents do?』

“They’re astronauts. Right now they’re staying on the space station 400 km above Earth.”

“…Eh!? Our parents are astronauts!? For real!?”

They were just regular company employees a few years ago!?

“They both switched careers and became astronauts. Didn’t you know, Onii-chan?”

“Nobody told me that!”

So the reason two high school siblings are living alone in a detached house was something like this.

400 km above Earth… No wonder they haven’t come home in so long.

While looking up at the deep navy sky that was turning into night through the car window, reminiscing about my parents working far away, I suddenly heard small “sounds” leaking from the girl sitting to my left.

“Nn! Nn! Ah!”

No way…

Surely not…

With a bad feeling, I glanced toward my little sister.

“Nn♡ Mmm♡ Oh♡ Oho♡”

Her right hand was shoved under her long skirt, which she had lifted with her left hand.

What the hell is she starting at a time like this!?

I leaned close to my idiot sister, whose face was already one step away from ahegao, and whispered as quietly as possible.

“Hey, you moron! What the hell are you doing!?”

“B-Because… you put me on hold earlier! and Onii-chan’s cum smell keeps drifting up from my chest… I couldn’t hold it anymore♡”

Madoka, I understand that you’re unbearably horny, but please don’t start doing it wherever you feel like it.

“Anyway, stop it inside the taxi! What if the perverted old man in front notices!?”

“But Onii-chan, my right hand won’t stop… What should I do♡ Nn♡ Ah♡ Ahn♡”

If I listened carefully, I could even hear wet, sticky sounds coming from between her legs.

……Can’t be helped. At this point, I’ll have to physically stop her.

I grabbed Madoka’s right arm with my left hand and pulled it out from under her long skirt.

Then I immediately clasped her right hand tightly with mine.

Squeeze.

How about that, Madoka? Now you can’t do it anymore.

I peeked at her face, expecting to see clear dissatisfaction from being denied again.

“…”

Surprisingly, she was looking down with the bashful expression of a girl in love.

“When we hold hands like this… it feels like we’re lovers, doesn’t it?”

…Please stop, Madoka.

That expression while we’re holding hands is completely unfair.

My heart is pounding like crazy now…

Unable to endure the embarrassing atmosphere, I unconsciously loosened my grip. Madoka immediately re-grasped my hand.

Squeeze.

Our fingers intertwined — the so-called “lover’s hold.”

Her index and middle fingers were still a little sticky from her love juices earlier, but they soon melted into my sweaty palm.

Wanting to respond to her feelings even a little, I squeezed her hand back firmly.

Squeeze.

……

The hot silence felt like it was burning my chest…

While worrying whether the perverted old man in front could hear my racing heartbeat, the two of us remained connected by this temporary lover’s handhold for a little while longer.

Before long, the taxi arrived at our destination.

“Thank you very much~”

Madoka, who seemed to have mostly recovered from her heat mode, quickly slipped out of the taxi.

“Hey, wait! Am I paying for everything again!?”

“I’ll give you ‘fap material’ later, so we’re even with that, okay?♡”

『Fap material…?』

The perverted old man looked confused.

“Ah, no… My sister works part-time at a side dish shop, so she often brings me my favorite ‘niku-jaga’ stew~ Haha…”

I made up a random excuse, paid the fare, and was about to get out when the driver called me back.

『Here, young man. If you want it, take this.』

He handed me a pocket tissue with the taxi company’s advertisement on it.

“Thank you. I’ll take it.”

For a teenage virgin, there is no such thing as “not needing tissues.”

※ ※ ※ ※ ※ ※

After seeing the taxi drive off, I met up with Madoka in front of the abandoned building a short walk away.

She put her hands together in a cute “sorry” gesture.

Since the cleavage visible through her black vertical-striped knit was such a blessing for the eyes, I decided to let the matter slide for now.

Besides, the taxi fare felt like a bargain considering the viewing fee for these clothed erotic breasts.

We decided to wait in the shadows of the abandoned building — which I mentally nicknamed “the building next to Nishiyoko Love Hotel” — where we had a good view.

While admiring Madoka’s black vertical-striped knit F-cups, we waited for over ten minutes.

……She’s here!

There was no way I could mistake that beauty or that perfect figure.

The real number one beauty of the school, on a completely different level from the “self-proclaimed number one beauty (lol)” beside me.

Our target, Midorigawa Kaede, had finally appeared.

“Onii-chan, she’s here! She’s here!”

Madoka looked extremely motivated.

“Aah~ No good! I’m going, I’m going~! I wanna go now! Hurry up and let me go! I want to go with Onii-chan! Let me go! Please let me go, Onii-chan! Hurry up and come, Onii-chan! Come! Hey, come on! Let’s go together! Let’s go! Let’s gooo!!!”

……Madoka-san, could you please stop using phrases that accidentally sound extremely lewd and ruin my motivation?