My Little Sister Is the Best F*p Material - Volume 2 Chapter 05: A Girl's Secret

Volume 2 Chapter 05: A Girl’s Secret

The scenery on my way home after school, riding my bike, was different from usual. Today, I have a cafe date with Sachiko, so I’m heading straight to the shop from school.

I never thought there would come a day when I would be in contact with a real girl and make plans for a date. Our meeting may not have been the most elegant, but such things are just personal preferences. We’ll get to know each other and become friends from here on. After all, I, who couldn’t even take the first step, have finally found my way forward.

“Ah, Onii-chan. Good work today.”

The hair tie with a cherry on it and the side tail tied to one side were just the right trademarks for finding someone. I waved back at Sachiko, who was waving at me from in front of the store, as I stopped my bike.

“Good work. Was it okay to go on a date during exam period?”

“Please don’t worry about it. I don’t go to the cram school, but I don’t need to study for the school tests.”

I was sweating on my back as I opened the store door, seeing Sachiko’s smile.

“Huh? But didn’t you say you wanted me to teach you how to study before?”

“You can’t take the exams if you’re not confident about the regular tests. I’d like you to teach me that instead.”

I was guided to the sofa seat by the staff, and I was trying to keep my face from twisting so that Sachiko behind me wouldn’t notice. It’s definitely impossible for me to teach her exam preparation. I was lucky to get into the school I’m in now.

“Which school do you plan to take the entrance exam for?”

“I’m thinking of Nishitaka High School because the uniform is cute. But the school is a bit high-level.”

No, it’s impossible. The difference in academic ability between my school and Nishitaka High School is ten points. It’s like an alien territory to me. Sachiko must be smart, too, to say that it’s just a little bit higher. Although she’s at the level of failing health and physical education.

“I wonder which school Miyu will take the exam for.”

“I think it’s the same as yours. It seems she doesn’t like going far away.”

“Is it okay to choose a school based on that reason…?”

“Miyu can study on her own. She won’t have any trouble going to college no matter where she goes.”

Sachiko opened the menu between us. We sat deeply on the sofa, leaving a gap of about one fist between us, just like before. The cafe latte with its elaborate presentation was ridiculously expensive. The place was probably included in the price, but if we kept going to cafes on our dates, we’d go bankrupt soon. I have to think of some way to play without spending money.

“How do the kids around Sachiko make money? There are some who make purchases that can’t be imagined from the allowance they get from their parents.”

Mainly Miyu.

“From their allowance. It seems that some kids get tens of thousands of yen, which is enviable…”

Sachiko puffed out her cheeks. From her reaction, it seems that Sachiko doesn’t get much allowance.

Allowance of tens of thousands of yen? That’s a lie. I can’t believe it. I’m saving a few hundred yen a day by being frugal with my lunch money.

“Even if you say they say it’s because their children can’t do a part-time job… I wonder if Haruka is making six figures or something.”

“Haruka-chan? I heard she doesn’t get any allowance.”

Sachiko pointed at her order to the staff who had come, then peered into my face. I ordered the same thing.

“She doesn’t get any? But I heard she often travels with Miyu.”

“She has money. She’s a model, you know. It seems she earns a lot.”

Ah, a model. So that’s it. Does that mean Miyu is doing the same thing? There’s no sign of it, but if she’s a fashion model, it’s not strange to think that she’s getting clothes through connections.

“Models are in magazines, right? Do they make that much money?”

“It seems that what Haruka-chan does is in a very niche field. It sells for a high price, so it seems that she makes a good profit.”

When I heard the word “niche field,” the conversation I had with Miyu that day played back in my head.

“—If you look inside my closet, I’ll cut ties with you.”

I was forbidden by Miyu in a tone that was close to a threat. When I heard about the clothes she didn’t want others to see, I immediately thought of cosplay, and I could understand the huge purchasing power of that genre of earning.

“…Do you have any photos?”

I admit that my statement included a deviant thought that there might be a twosome photo of Haruka and Miyu. I know that it’s the worst thing to pry into someone’s secrets.

But ever since then, something has been stuck in the back of my mind. That serious and unsociable younger sister of mine, wearing gaudy equipment or provocative costumes, posing and winking at the camera.

I can’t even imagine it. But maybe Miyu is someone who can let loose and exude sex appeal in front of a very small number of people.

“I don’t have any. It seems that it’s completely members-only, and there’s no information on the internet.”

Sachiko blew on the cafe mocha that the staff had brought, puckering her face at the heat, then blowing on it again.

Yuka, that naughty girl who was punished by Miyu. I still have the humiliating photos of her on my smartphone. Now that I have a girlfriend, I should delete them.

Sachiko doesn’t know that I was involved in that criminal punishment. I felt like punishing myself a little, so I gulped down the hot cafe mocha.

“Hot—ts!”

“What are you doing? Gosh. Look, I’m blowing on mine.”

“S-sorry.”

There’s no way I can forget the image of Yuka being humiliated just from this. I took out my smartphone to secretly delete the photos. Come to think of it, Yuka said that she unlocked Miyu’s smartphone and looked inside. And that’s Miyu’s source of anger. Maybe Yuka is holding on to Miyu’s terrible secret.

“Oh, that’s right. You know Yuka-chan, right, Onii-san?”

Sachiko clapped her hands and looked satisfied. How does she know that? Well, even if we’re acquaintances, we’ve only met a few times.

“Today, at school, Yuka-chan told me that she wanted to talk to you, and asked me to introduce you to her sometime.”

“Me? Why?”

“I asked her the reason, but she wouldn’t tell me. She told me to keep it a secret from Miyu-chan, so I think it’s not a good thing…”

It’s common knowledge that Yuka is not a good person. It’s only natural after what she did.

“Was it because of the girlfriend recruitment yesterday that this talk came up?”

She had advertised the recruitment so grandly. It’s not surprising that it would become a topic of conversation.

“Ehehe. That’s right. After Miyu-chan contacted everyone and said that it has been done, I was the only one who didn’t deny that I was your girlfriend. So I was exposed by process of elimination.”

The recruitment conditions were that you had to be able to have sex as a couple. It’s inevitable that the girls who were overflowing with sexual desire for Miyu would become a paparazzi when they heard about the couple’s formation report.

“Wasn’t the recruitment condition, that…? Did you get asked about that?”

“I was asked about it in detail. I was embarrassed, so I answered that I would do it soon. That way, even if I confess that I did it, everyone won’t be surprised.”

That’s a smart judgment. Although she seemed like a natural girl at first impression, she seems to be quite capable when I talk to her. She’s good at everything but health and physical education.

“I’m sorry for putting you through that.”

“Please don’t apologize. I’m also excited and having fun.”

The thrill of whether or not everyone at school will find out. It’s certainly a thrilling experience, but…it’s impure.

“By the way…”

Sachiko held the cup with both hands, keeping her mouth on it, and turned her eyes toward me. That’s probably what they mean by looking like a small animal.

“What’s up?”

“Well, about over there…or rather, about sex, what are you going to do?”

“Huh? That’s right! U-um…”

What am I doing, making a girl say that? It’s not too late for me to take the lead.

First, it’s condoms, right? I’ll buy them at the convenience store. The problem is the location. Since we both live at home, it’s difficult to do it in our rooms, and we can’t use love hotels because we’re not officially a couple. Besides, it will be too expensive to consider the future.

“I’ll look for a place where we can do it.”

When I searched on my smartphone, I found that there were quite a few couples who did it at home. People who don’t mind bringing their boyfriend or girlfriend home to their real family seem to do it in their room. Next is karaoke and the internet cafe. My parents don’t come home until the evening, but Miyu is there. If I ask her when she’s going out, I might be able to finish it during her free time…

Even if I’ve had sex in front of her before, I don’t think Miyu would feel good if sex in the room became a regular thing. First of all, I don’t like the idea of having sex next to my sister’s room.

“There’s an internet cafe near the cram school.”

“Isn’t there a risk that Sachiko will run into someone she knows?”

“I think it’s okay because it’s on the quiet side of the street away from the station. It’s also forbidden at school, so only bad kids like us who do bad things use it, alright?”

Sachiko laughed coquettishly, as if to taunt me. Was she this devilish? It seems that she gets used to it quickly because she doesn’t have any sexual knowledge. It’s also because Miyu has filled her with bad things. I want to scold both of them.

“Okay, let’s do that.”

I left the cafe with Sachiko. Since we were in uniform, we decided to change into casual clothes at home before going to the internet cafe. It’s kind of weird to go from one cafe to another. I just want a private room where no one will disturb us. In the eyes of the world, people who do erotic things are bad. Love hotels are not welcomed by society, either. I also thought they were bad just the other day.

“I’m home.”

I opened the door to the entrance, speaking in a low voice. The key was open, so Miyu must have come home. I have to avoid running into Miyu when I’m about to go out to have sex with my friend…I was thinking that, but then Miyu came out of the bathroom across from me.

“Oh, Onii-chan. welcome home.”

Miyu, who was taking care of her skin after washing her face, was holding her bangs back with a hairband. Her forehead was exposed, and her slightly absent-minded face was adorable.

“You got back early. Didn’t you go on a date?”

“I did, but we decided to change into casual clothes first.”

“Hmm.”

Miyu stopped and stared at me.

What is this pressure? I can’t move, like I’m being stared down by a snake.

“Why don’t you do it here?”

“What do you mean!?”

I almost fell over while taking off my shoes, reacting excessively.

“What do you mean, you ask. I mean it as it is, sex.”

“You say it without any embarrassment…”

After all, she’s a girl in her blooming youth. If I could go back in time and start over, I would seal away the unnecessary things until Sachiko had the same level of sexual knowledge.

“How did you know?”

“If it’s a place where you can’t go in your uniform, it’s either a love hotel or an internet cafe, right? I don’t think couples use either for anything other than sex.”

“Your prejudice is too much.”

It’s fine. She’s a psychic. That’s the only answer.

“Onii-chan, why don’t we decide which days we’ll be at home and which days we won’t?”

That was Miyu’s active proposal to let me use the room for sex. Miyu also wants me to become close to Sachiko and get over my sister complex as soon as possible.

“We’ll make a plan to absolutely not come home before a predetermined time. For a while, I’ll put you first. I’ll use the time I’ve opened up for something else.”

In other words, first, I’ll use the house according to my convenience, and then Miyu will use the house for the same amount of time. Miyu will also want to call her friends over and do things like she used to, so it’s not a bad proposal.

“But Miyu, don’t you kind of hate the thought that, when you come home, until just a moment ago, I was doing it with her?”

“I’m about to head back to my room, and I’ll be thinking—right about now, Onii-chan is probably having sex with Sachiko at the net café.”

“Alright, alright. Let’s go with that arrangement. I’ll gratefully accept it.”

Miyu has already gone home for the day, so the net café is the only option left. I can’t shake off my uneasiness about what kind of place it really is, but it did say “private rooms”… so it should be fine, right?