My Little Sister Is the Best F*p Material - Volume 2 Chapter 06: It's something that's close to a curse.

Volume 2 Chapter 06: It’s something that’s close to a curse.

“It’s for two people, right? Please write down the representative’s name and address.”

At the net cafe’s reception, I and Sachiko wanted to use the couple’s seat. The reception was like a casual hotel front desk, with a monochrome atmosphere and a calm space, and I was a bit taken aback by the much more elegant decor than I had imagined.

I took out my student ID, picked up the attached pen, and started filling in the required information on the reception form. Although I hesitated to write down my personal information, I couldn’t find any other reason besides the fact that everyone was using it, so I suppressed my anxiety and continued writing.

The thirty-minute usage fee was 210 yen per person. It seemed cheap with unlimited manga reading and a drink bar, but it wasn’t something that could be used casually over and over again. If I used it too much, the staff might recognize my face, and I was glad that Miyu had let me use her room. Today, I would just consider it a school trip. Although the purpose was impure heterosexual play.

“Thank you. Next, I will explain how to spend time in the store…”

The staff member in an apron, while flipping through the portfolio, explained the usage method and the terms of use of the facilities. Of course, there was a clause prohibiting lewd acts. If caught, there would be an immediate dismissal, or even a fine and a report.

Sachiko, who was listening to the explanation next to me, remained silent throughout. Finally, we were given a sign indicating that we were using the room, and the staff member guided us to the room with a map. Why was it a sign and not a key? By the time we understood this, we had already greatly regretted our mistake.

“Is this…?”

Sachiko let out a small voice. There was a simple room separated from the next room by only a thin board. At the bottom of the door, there was a small gap to confirm the inside from the outside, and if you bent down, you could see what was happening inside. Above all, the walls were thin. The sound of blowing your nose, the sound of placing headphones, if it was from the next room, it could be easily heard. Because everyone was trying to move carefully without making any noise, the couple’s seats, which were gathered together, were eerily quiet except for a couple of couples chatting.

“In the pictures, it looked like a completely private room.”

“Did we come to the wrong store by any chance?”

After taking off our shoes and cautiously entering the private room, I took out my smartphone and searched for the store’s name. The result was that we had mistakenly come to a store with a similar name. From what Sachiko said about the store being near the cram school, I had thought that it was the originally planned completely private room store, but in fact, the net cafe was on the opposite side of the station from the cram school.

“I’m sorry… it’s my fault…”

“I was also careless. It was a mistake that could have been noticed normally.”

It was impossible to do something erotic in such a place. Though even just coming to a new place raised my spirits, and since there were manga and a drink bar, I thought I’d stay for about an hour.

The room was unified in black with a vinyl sheet, and it was just the right place to sleep in a group. The platform with the computer was designed so that the floor could be removed, so it was not uncomfortable to sit. If there were soundproofing effects, it would be more relaxing, but now I could understand the reason for the high demand for completely private rooms.

Since it was a couple’s seat, I wanted an environment where we could talk without any reservations. It was annoying that we could only talk in a low voice, as if we were doing something bad. Sachiko immediately lay down after entering the room and spread out the blanket that was folded in the corner. Even though there were manga and drinks, she was going to sleep.

“Couple’s seat, right? Don’t you want to do something couple-like?”

Sachiko patted the side of her body while lying down in a low voice. She wanted to sleep together? That might be good too. I hadn’t told Sachiko yet that I could use our house and she probably wanted to use the place where we could sleep together effectively. I also put my luggage aside and lay down in the same direction as Sachiko.

“No, no. Please sit here with your legs stretched out, Onii-chan.”

As soon as I lay down, Sachiko urged me to get up. So she wanted a knee pillow instead of lying down together.

“Isn’t it the man who usually asks for this?”

“It’s your fault for not saying anything.”

Sachiko took off her hair tie and rested her head on my knee. Then, she wrapped her arms around my waist and pressed her face against me.

Although we were not yet in a lover-like relationship, it seemed that Sachiko had a certain aspiration for lover-like intimacy. Wanting to respond to her request as much as possible, I stroked Sachiko’s hair. It was natural for Sachiko to aspire to lover-like interactions. After all, she had accepted the recruitment notice for a boyfriend.

These days, do girls just date guys if the conditions are right, even if they don’t fall in love with them? I didn’t know if I was a good man in Sachiko’s eyes, but it wasn’t a bad feeling to be treated so favorably. The warmth of a person touching my knee. The temperature of a single girl. It was more than comfortable; it was pleasant.

“Muuhh. Onii-chan. What is this?”

I was prodded with the tip of her finger, my tented crotch. No, this was inevitable. I, who was not accustomed to touching female bodies, was bound to get an erection when my soft cheek was rubbed like that.

“Sorry.”

“So this is what the recruitment was about.”

Sachiko realized that sex was a prerequisite for the girlfriend recruitment and pulled up the blanket. I didn’t want to be seen as a man who wanted to have sex every day just because of my strong sexual desire, which was Miyu’s fault.

“You mustn’t make any noise.”

Sachiko covered her head with the blanket, covering my lower body as well. In the darkness, I could feel Sachiko’s fingers touching my pants. The zipper was being opened. Was she going to do it here? Although it was true that covering oneself with a blanket could be a preparation for any eventuality, and the sucking sound could be suppressed, the wall did not extend to the ceiling, and the staff might be patrolling.

Even in such a state, my penis was rock hard. It didn’t take long for the zipper to be lowered and the front button of my pants to be opened. The erect penis was taken out from inside, and immediately, the warmth of human skin enveloped the glans.

For Sachiko, this was probably just a way to get rid of her sexual desire. She probably only had knowledge of this act as a way to get rid of her sexual desire. At this time of year, when it was getting hot and humid, there should be a certain smell inside my pants. Even so, Sachiko was licking me without any concern. I was being given a blowjob. In this public place, it was almost like an exposure play. Was my special fetish not just a sibling complex?

Since the blanket was blocking my view, I couldn’t see what kind of face Sachiko was making as she sucked my penis. I couldn’t even hear the sound of her sucking, and only my private parts were immersed in pleasure in the silence. The memory of being shown the clause prohibiting lewd conduct at the reception flashed back, and my heartbeat rose with a sense of guilt, and I became tense and then excited.

But still, it was not enough. Although I had received a blowjob from her the day before, I had ejaculated immediately. It was not that I had become more patient, but rather that something was missing to reach ejaculation. Was it because of the lack of visual information? At that time, I was able to watch as Sachiko, who had been taught to have a female face by Miyu, tried her best to lick my penis, but now I could only feel the warm stickiness stimulating the glans.

I put my hand on Sachiko’s thigh, which was exposed from under the blanket. Since she was my girlfriend, touching a girl’s bare legs was not a crime. Since Sachiko continued to give me a blowjob in silence, it seemed that she also allowed me to touch her.

While stroking her thigh, I reached into her skirt. The smooth, white, shiny skin. This soft, fleshy feeling was irresistible. The excitement of checking inside her skirt quickly spread to my groin. The blood vessels were so swollen that I could hear the pulsation from my penis. When I lifted her skirt, I saw light blue panties that were refreshing. The fabric, which was stuck to her buttocks with sweat, created a groove along the cleft of her buttocks. The eroticism of the panties being worn was extraordinary.

(If I just stretch out my finger… I can touch this girl’s vagina…)

I couldn’t suppress my curiosity about that secret place that I had only known from textbooks, and I immediately put my finger inside her panties. Sachiko reacted with a start, but she didn’t say anything. Instead, she started to suck my penis vigorously. With a blowjob that made a splashing sound under the blanket, I wanted to confirm how excited Sachiko was, so I touched her labia, parting the soft, fine pubic hair.

It was moist, I thought. But this level of moisture was not enough to distinguish it from sweat. I didn’t feel the slippery sensation of love juice, and perhaps Sachiko was not in a sufficiently erotic mood to be seen as behaving. Once I was reassured, I sank my fingers further into the cleft…

(Wow… seriously… I didn’t know it was this amazing…)

Like a broken yolk, a slimy body fluid clung to my fingers from Sachiko’s crotch. I had thought that the vagina becoming wet was just a phrase used for verbal abuse, but it was not a fantasy; it actually existed. In order to accept the man’s enlarged penis, Sachiko’s secret slit was covered in stickiness.

The meat hole that my penis had penetrated first, even though Sachiko was a virgin, had become a sensitive spot due to repeated masturbation. When Miyu was teasing her with her fingers, Sachiko was wildly out of her mind, but I had no idea how or where to stimulate a woman to make her go that crazy.

I was once again reminded of how great Miyu was. Teasing the meat wall and tormenting Sachiko, who was sucking my penis, but the stroke did not change, and I could not get any feedback. It was written on the internet that if you did it too strongly, it would hurt, but on the contrary, was it too weak? Or was I stimulating the wrong place?

I tried hard, and when I realized the concentration, I suddenly came to my senses. I was now receiving a blowjob from Sachiko, hidden under the blanket, yet I was so calm. Although it was a sexual act that I had longed for just a few days ago, I was glad that I was not an early ejaculator. But it was still regrettable that I was not able to ejaculate despite Sachiko’s hard work.

“Mmm… chu bu… fu aa… How is it, Onii-chan?”

“It feels good. But it still seems difficult to come.”

“Uuu… Is that so…”

As expected, I had made Sachiko feel down. It was the worst thing for a man to make a girl lose confidence. Somehow I wanted to ejaculate and reassure Sachiko.

“Maybe it’s because of the place.”

“Is it because of the tension?”

“Probably.”

It was not impossible as a factor. But thanks to Sachiko, I was in an erotic mood. My reason was gradually collapsing, but I still couldn’t ejaculate, and there was a bigger problem.

“Maybe it’s better if it’s not in the mouth.”

“Do you mean inserting it into the vagina?”

“I guess it’s a bit too much in here?”

Unlike a blowjob, which is done unilaterally, the actual act of sex is more embarrassing for the woman who is being penetrated. However, Sachiko, who understood that she was needed for sex, did not make a hateful face, although she did look embarrassed.

“It[s okay. Then, please lie down on your back.”

Sachiko got on top of me in a riding position and covered the blanket from her waist down. I took out the condom I had bought at the convenience store from my bag and put it on my penis. At the same time, Sachiko took off her pants, and the light blue panties were thrown to the floor from under the blanket.

If I peeked under the door, would it just look like a couple sleeping? Although it was a bit of a weak excuse, I couldn’t stop now. In the end, I had ended up having sex in such a place with thin walls, but I wanted to make even the sense of sin an exciting factor.

“Mmm…”

Our hidden private parts were connected, and Sachiko’s voice leaked out slightly. It was my second insertion in my life. I was more stably wrapped up to the root than when I was inserting it in a standing position.

“Haa… kuh…”

This was bad. Although I knew I shouldn’t make any noise, I couldn’t help but leak. I, a man, should have felt less pleasure than Sachiko, a woman.

“Ah… Sa-chi… ko… it feels good…”

“N-ah… nnn… me too…”

It was a volume that should not be heard unless you were right next to us. Even if we were in the same private room, it should not be heard unless we got close.

Thinking so, I could no longer stop myself. I thrust my penis into Sachiko’s womb as hard as I could. I grabbed Sachiko’s waist with both hands and rubbed the glans against the cervix as if I was opening the cervix.

“An…”

Sachiko’s voice leaked out in surprise and pleasure.

Sachiko, who had made a slightly audible voice, was embarrassed and afraid, and she used my neck as a wall to prevent the sound from escaping.

Long black hair spread out, and our faces crossed right next to each other. The small moaning voice was clearly audible in this position. In a situation where only Sachiko’s sexy voice reached my ears without seeing her face.

“N-ah… haa… onii-san…”

“────!”

My heart jumped up with a thump.

The ejaculation feeling that welled up in me from the moan that leaked into my ear.

Sachiko, who was supposed to suppress her voice, was, on the other hand, moving her waist on her own due to her excitement, and the moaning voice that leaked with her breath was echoing in my ear.

This was bad. Please stop.

In such a state, if my penis was rubbed, I would ejaculate again, using Miyu as an aid.

“Sachiko… sorry… I’m going to…”

“Please cum… onii-san… cum…”

I could no longer stop the gushing. After hearing the moan of the black-haired girl, who was identical to Miyu, I ejaculated while imagining sex with Miyu.

After the best ejaculation feeling, the worst sense of guilt tormented me. Although I had been served so diligently, and even though I had been allowed to insert it in such a place where anyone might be listening, in the end, I was thinking about my real sister.

Although I had been told not to use her as an aid, and even though I had been introduced to a friend who would become my girlfriend for that purpose, it was inexcusable towards Miyu.

“We did it, didn’t we, Onii-chan?”

Sachiko, who was unaware of the situation, smiled brightly at me. I returned a “thank you” without any feeling, took out the condom, and tied it up.

There was a lot of white liquid inside. Whose sperm was this, and for what purpose was it ejaculated? I didn’t want to think about it, so I wrapped it in a large amount of tissue and threw it in the trash.

I asked Sachiko to refrain from cleaning up with a blowjob because of the rubbery smell and the fact that she didn’t like the taste of semen. I opened the hand towel and wiped my penis with a few sheets. I also covered it with a large amount of tissue, and although the pile of tissues itself was unnatural, I thought that the staff wouldn’t want to dig through customers’ trash, so I pushed it in.

Then, we spent some quiet time just lying down together, and we left the private room. After putting on our shoes, we headed for the register. It was then that I was called out.

“Oh, it’s Miyu’s older brother.”

I was called out by a girl about the same age as Sachiko. That was the person with the brown hair in twin tails, who had seen the erotic images on my smartphone.

“Yuka-chan? What a coincidence, meeting you here.”

“Really, what a coincidence, Onii-san. Mufufu.”

Yuka puffed out her cheeks and arched her eyes. I had never seen such a lewd face. Sachiko had gone to the register and hasn’t come back.

“By the way, Onii-san, can you hear my request?”

“What’s up all of a sudden?”

We had common acquaintances like Miyu and Sachiko, and had only met each other to some extent, what kind of request did she intend to make?

“Is it no good?”

“First, tell me what it is, and then I’ll see what I can do.”

I would probably refuse though.

“But it’s okay if I tell you. Since you’re going to agree anyway, please read the air and go along with it.”

“I hate that kind of trouble. If it’s an extension, it’ll cost money, so if you’re just teasing me, I’ll go now.”

“E-eh. I think it’s better to at least listen to my story.”

I didn’t know what her sudden appearance meant, but I somehow understood why Miyu and Sachiko said she was no good. This girl is no good.

“Is it okay? Onii-san… doing naughty things with a younger girl in a place like this, huh? So sleazy, so sleazy, o-n-i-i-s-a-n.”

A cold shiver ran down my spine. Could it be… this girl. About what had happened so far…

“Do you really think we just happened to bump into each other here by chance? Come on, that’s not possible.”

Yuka mocked me with her smartphone in her hand. Was it a tool for threatening me? Or was it just a bluff?

Even if she had taken a video, there should be no conclusive evidence. I was careful about my surroundings after the incident, and although it was suspicious that we were under the blanket and moving around, we could pass it off as light PDA between lovers.

“What are you talking about? I’m leaving now.”

“Hmm. So that’s how you plan to handle this, huh?”

Yuka walked with big strides, taking one step, then another, and moved in front of the private room that I and Sachiko had used. At a slightly wider distance, Yuka put her hand to her mouth like a megaphone and clearly moved her mouth in a low voice.

“You wrote your name and address at the reception, right? And your student ID was also copied. You can’t do anything bad.”

“If you took a video, it would be faster to show it and threaten me.”

She probably didn’t take a video. Her basis for this was not that. She was just assuming that I was doing it because Sachiko, who had agreed to the condition of “having sex as a prerequisite for dating,” was with me.

“There’s no video…”

See there. I’m not going to be fooled by an empty gun barrel.

“I’ll have the staff check the contents of the trash can? If you leave after that, the store probably won’t care, but if the scene is practically caught, it’s a different story, right? I’m sure you were also told about the clause that prohibits lewd conduct, and if the school is contacted, both of you could be suspended…”

This girl is the type who is good at scheming. What should I do? If I submit to someone who goes this far, their demands will only escalate.

“… But I won’t do that. I just want to talk a little, that’s all. Why don’t we take it easy?”

Yuka came up with a relaxed smile. It could be considered that this was all part of her plan, but in the current situation, where I’m only being told that she wants to talk, I, who am at a disadvantage, might only make my position worse by arguing.

“I’ll just listen to what you have to say.”

“Yaaay! Onii-san, you understand! Well, I’ll get your info from Sachiko, and I’ll send you the details tomorrow. Bye-bye!”

With that said, Yuka returned to her room.

“Haa…”

I’m definitely involved in something no good.