My Little Sister Is the Best F*p Material

Volume 1 Chapter 09: The Problem with Being Unable to Masturbate to Anyone but My Sister”

I was sitting alone on a school chair. During the short break between classes with no classroom moves, I was gazing into space without talking to anyone. Even though I usually had some pointless interactions with Takanami or Suzuhara during short breaks, today there was none of that.

I had another problem to worry about. I couldn’t get an erection at all with my classmates. Our class was supposed to have relatively attractive girls, but no matter how hard I tried to fantasize erotically, I quickly got bored.

Even a healthy male student would probably think it was disgusting to use the girls in his class as masturbation material. There were unavoidable circumstances, and I didn’t usually do that. I was a believer in two-dimensional characters in the first place.

Since I couldn’t get aroused by erotic games anymore, most of my masturbation material had become my little sister, Miyu. Still, I thought I should be able to get excited about other girls. Immerse myself in self-pleasure with adult images of beautiful girls and hypnotic voice recordings, and the pleasure of an onahole hadn’t faded. It was just that the switch to ejaculation didn’t turn on. That was all that was supposed to be.

But now, I couldn’t even get an erection with anyone but Miyu. In addition, through the masturbation I had with my sister’s friend, Yuka, a doubt had arisen in my mind. Wasn’t I just getting excited and erect because of Miyu’s orders at that point?

I was supposed to have ejaculated while looking at Yuka’s naked body and fantasizing about her being played with. When I looked at the erotic photos of Yuka that Miyu had given me–eventually, I also got the photos of her in the restrained state–I got horny and had an erection. But I wondered if I got excited because of the situation where Miyu whispered to me from behind.

I was plotting to masturbate to my classmates to see if my flaccid penis was functioning properly… But it was even difficult to get an erection with my classmates. The only ones I could get excited about were Yuka and Miyu.

This was a problem. I might have become a lolicon, a serious lolicon. And a siscon lolicon at that. I was completely out of line. I was a hopeless patient who couldn’t even feel like getting out of it.

“Sotomichi-kun. You’re spacing out again today.”

And then, another strange phenomenon was happening. Yamamoto-san, a beautiful girl with black hair, clear complexion, and big breasts, was talking to me. With her hands behind her back, leaning forward, the shape of her breasts was clearly visible on her blouse due to gravity.

“I have a lot on my mind.”

“A problem?”

“Something like that.”

I should have been happy that she was talking to me, but I ended up being short with her. It was also because I didn’t want Takami to tease me, but I was still struggling with my communication skills, even though Miyu had made me more accustomed to women. In any case, it was a problem I couldn’t tell anyone about.

“What about you, Yamamoto-san?”

“I don’t have anything, but is it wrong for me to talk to you?”

If it’s not wrong, then it’s weird. We have no connection at all. The first time I talked to her properly was when I was the class monitor last week. Without a reason, it was suspicious.

“Suzuhara has been staring at me with a sticky look since a while ago. To be honest, it’s hard to talk to him.”

I wonder why Suzuhara is like that. Even if I didn’t have a sister, he wouldn’t have shown such open hostility.

“Ah… Suzuhara-kun…”

Yamamoto-san lowered her voice and started playing with the ends of her long hair. Even a man with little experience with women like me could tell from her obvious attitude.

“Is it about that guy? If he’s bothering you, I can warn him.”

“Haha. Thank you. Um, well, can I ask you one favor?”

Rather than taking advantage of the situation, it was more like the right time had come. Unless it was a favor, Yamamoto-san wouldn’t talk to me.

“Well…”

Yamamoto-san came closer so that no one around could hear and asked me.

“Does Suzuhara-kun have a past love interest? Even if it’s not at our school, I’d like to know if he does.”

Yamamoto-san’s breath blew into my ear. A sexy voice echoed in my inner ear, and my groin started to throb. My ears had become erogenous zones because of Miyu. Even with that, my penis didn’t get any bigger; it just twitched a little. My penis was choosing the wrong partner.

“I’ve never heard of it. We used to spend all our time watching anime and playing games, so we’re not really familiar with each other’s real-life romance.”

Looking at Suzuhara’s attitude toward Yamamoto-san, I think he must have had some interest in a girl in real life. But we never talked about it. Our common understanding that we were only interested in two-dimensional girls was a source of comfort in that group.

“Should I ask him?”

“No, I don’t think that’s necessary. Sorry. I’d be grateful if you could keep this conversation a secret.”

“Okay. I understand.”

What was that interaction about? Would someone who was good at reading women’s minds notice something? Was Yamamoto-san in love with Suzuhara, or was there someone who loved Suzuhara? Was there some past grudge?

“Thanks. If anything happens, I’m counting on your help.”

Yamamoto-san winked and left with a brisk step. Her waist, which was tightly closed, swayed as she walked, wearing a pleated skirt, and she was just like a beautiful schoolgirl in a picture.

Yamamoto-san is so cute. The fact that I can’t get an erection with her makes me think I should be more concerned.

—

“It’s a serious problem.”

When I got home, I faced Miyu across the living room table and opened my heavy mouth.

My sister, who was always expressionless, with her hair and clothes neatly arranged, and her posture without the slightest gap, was so erotic. Was it because she had big breasts? No, then Yamamoto-san should have been able to beat her.

“Since we’re at it, I think we should have an open and honest talk.”

“Yes.”

“This is a very sensitive issue, but is it okay?”

“Please, go ahead.”

Miyu placed her hands on her knees and adopted a listening posture. It was difficult to talk to her because she was so firm.

“First of all, I apologize for talking about this topic. I have a problem with my masturbation material.”

Miyu fell silent.

I’ll say it. I have to say it. I’ve already released a lot of words from my mouth… And also released lots into Miyu’s mouth…

She drank an almost unbelievable amount. That must be the cause. It was Miyu’s fault for trying to drink my semen in the first place. I didn’t expect her to do that for me.

I’m not at fault. I’m not at fault.

“To put it simply, I can only masturbate to Miyu now.”

It was the first time I had clearly stated this. I hadn’t explicitly said that I was using Miyu as masturbation material because I had been warned not to use myself as masturbation material before.

Miyu blushed and stiffened as she blinked her eyes more frequently.

“Onii-chan.”

Then, Miyu leaned forward with her hands on the table.

“That is a serious problem.”

It was a heavy word she told me. It seemed to be a surprising fact for Miyu. After all, she must have really believed that I wasn’t using her as masturbation material.

“Are you bored with Yuka’s photos?”

“It’s not like that, but…”

I explained the situation in detail. I could use Yuka as masturbation material, but the switch to ejaculation didn’t turn on unless I remembered Miyu’s voice. And I couldn’t get an erection with the girls in my class.

“Is it my fault…?”

Miyu placed her hand on her mouth and fell into deep thought. That’s right, my dear little sister. If you weren’t so cute, this wouldn’t have happened.

“Hey, in the first place. Miyu, why did you dr—”

“There might be one way to fix it.”

Miyu interrupted my talk and started fiddling with her smartphone. It was unusual for her to ignore what I was saying. Was it accidental, or she didn’t want to hear it?

“What is it?”

“It’s a simple idea. In other words, because you have no experience with women, you’ve fallen in love with your little sister, right?”

“Umm… yeah…”

She was right, but it was difficult to say.

“Then, you should get a girlfriend.”

Miyu thrust the list of girls in front of me. The answer was surprisingly simple. But, of course, that only applied if you were blessed with good looks and intelligence, like Miyu and her friends.

“Simple and easy are two different things. Not that you guys would understand, though.”

“It’s you who doesn’t understand. You’re just covering up your life with your own preconceptions.”

It was undoubtedly verbal violence. My heart felt like it was being hit with a nail bat, throbbing painfully. I’m in danger of crying. Why? I don’t think I agreed with what Miyu said, but her words hurt me.

“What benefit would there be for someone who would date me?”

“You won’t think about that once you start dating someone. So, don’t worry.”

“Hmm.”

I pretended to be indifferent and looked at Miyu.

“A friend of mine told me that.”

“That’s a very convincing story indeed.” (T/N: He said this in a sarcastic tone.)

I can’t believe this girl. She definitely has no dating experience. She’s acting so superior. She’s like an idol who sings love songs while declaring her purity.

“I could date you, but I choose not to. You’ve never been confessed to or asked on a date, have you?”

Miyu stabbed me repeatedly with her unsheathed blade. She was relentless. I won’t go against my little sister anymore.

“It’s not exactly a merit, but… Onii-chan, at the very least, from my friends’ perspective, you have two distinct statuses.”

“What’s that?”

Miyu raised her eyebrows as I looked confused. Then, she held out her palm and counted on her fingers.

“You’re older than them. And most importantly, you’re my brother.”

Miyu declared it with unwavering confidence. Hearing her words, I suddenly felt like I actually had a chance at winning. It was so reassuring that I wanted to bow down in gratitude. Seriously, you’re incredible.

“For now, I’ll ask someone who seems like she’d be willing to have sex with you.”

“T-That already!?”

Today’s kids are so open about that kind of thing. Is sex education in Japan okay?

“I also want to take photos of you, so you should dress more appropriately.”

“Ugh, pictures? Won’t that leave a bad impression?”

I don’t think my face is extremely bad, though. Even so, I’ve never thought my photos looked cool. At least if I could use a photo editing app, I’d have the courage to show them to others.

“It depends on your hairstyle and clothes. Your skin is beautiful.”

Miyu added, “After all, you’re my brother.” At least, that’s not thanks to you.

“Do you have hair wax?”

“No.”

“When was the last time you bought clothes?”

“Two years ago…”

Miyu looked at me with a pitying expression. No, I mean, I didn’t have many opportunities to go out. I wanted to spend my money on games and computers. And sometimes my parents bought me clothes without me having to buy them myself.

Onii-chan, you keep chasing after short-term benefits, but if you don’t put on a show, your life won’t change.

What is this? Is this some kind of self-improvement seminar? Why is she using such heavy words today? What kind of life has she lived?

“Sell the games you don’t need and buy clothes. Do muscle training every day without fail. At school, talk to a girl at least once a day, preferably with Yamamoto-san. If you can do all this, I, your little sister, guarantee that you will have sex within a month.”

Miyu put her hand on her waist and proudly displayed her large breasts, which were visible even through her uniform. I felt so sorry for making my little sister say such things.

“What if they all turn me down?”

“In that case, there’s no choice but for me to be your partner.”

That’s ridiculous, my little sister.

“Clothes huh? I don’t know much about them.”

“Then, let’s go to the shopping mall on our next day off. It’s a bit far, though.”

“Do we really need to go that far? There are clothing stores at the nearest station, too.”

It’s a matter of atmosphere. It’s a place that seems unrelated to you, Onii-chan. Just trying an experience you don’t usually have can change a person.

Is that so? You’re such a kind sister. I’ll have to repay your kindness someday.

“Okay, let’s go.”

“Yes.”

Suddenly, a date with my sister was decided.