When I woke up on the sofa, there was a sound like mosquitoes flying.
I tried to wave my hand at the discomfort, but the vibrating sound that clung to it tormented me forever.
When I sat up, I felt dizzy and felt a sharp pain from the inside of my thighs to my bladder.
"That hurts-...!"
I ejaculated too much.
Maybe I should go see a urologist now.
"Huh..."
When I woke up, the noise stopped.
Did the bug go somewhere?
In my vague consciousness, I realised that something hard was hitting my hand.
"My smartphone?"
Is this the source of that vibration sound?
I thought maybe I had set an alarm, but when I turned it on, I saw three incoming calls on the display.
The call came through the messaging app, and the sender was Yamamoto-san.
Apart from that, there are about five messages accumulated.
"...Eh."
I had promised to go to Yamamoto-san's house at 10 o'clock.
I wonder how long I've been sleeping.
All I could feel was that I was in a state of nausea for a moment.
I glanced at the time display, which I had unconsciously left out of my sight.
My heart begins to beat loudly.
The time was already around 13 o'clock.
"Oh shi--!!"
I jumped off the sofa and rushed to call Yamamoto-san.
The sound of my pounding heart bounces off the phone I press against my ear, amplifying my nervousness.
I waited for 10 calls while adjusting my clothes and adjusting my sleeping habits.
As I was preparing to leave in a hurry, terrified that I would be hated, Yamamoto-san answered.
"Sorry!!"
The first thing I say.
I apologised before Yamamoto-san said anything.
'Ah, yeah. Are you okay?'
Yamamoto-san was surprisingly excited.
Is it natural considering her usual personality?
"I'll be right there! Just wait ten minutes!"
'Is Sotomichi-kun okay? If you have something else to do, you can come another day...'
"It's okay!"
"Alright. Well then, I'll be waiting for you."
I locked up my house and jumped out.
I was given Yamamoto-san's room number in advance, so she will take care of me when I arrive at the entrance.
Even though the sun was beating down on me, the wind generated by the bicycle made it cooler than walking.
When I got to the apartment, I left my bicycle and ran to the entrance.
Perhaps because it was a fairly expensive apartment, the air conditioning was already working well at this point, so I wasn't sweating as much as I was out of breath.
I had Yamamoto-san open the automatic door and get into the elevator.
Yamamoto-san's room is on the 10th floor.
Standing in front of the door, I took a few breaths and pressed the intercom.
Yamamoto-san greeted me immediately.
"Welcome. It's hot, so come in."
"E-excuse my intrusion."
The room is a typical long and narrow type.
The overall resin-like feel and spaciousness of the kitchen give it a luxurious feel as a single-occupancy residence.
I enter the front door and close it.
Immediately after that, Yamamoto-san looked back and pushed me against the door with her boobs.
Yamamoto-san has one T-shirt.
Her voluptuous elasticity presses me down.
"Now, could you please explain what you mean?"
The two of us stand at the entrance to the bachelor's room while I haven't even taken off my shoes.
Because of Yamamoto-san's big boobs, it's very narrow.
"My apologies! I overslept...!"
Although it might be unnatural for me to sleep until this late in the day.
I'm not lying, and I don't think there's anything wrong with what I'm saying.
"Were you asleep until just now?"
"Ahh, I was just really tired, it happened before I knew it. Really, my apologies."
This is also true.
If Miyu hadn't made me ejaculate so much, I would have been able to come here on time, even skipping around energetically.
...No, I understand.
The ejaculations were partially initiated by me, so Miyu wasn't at fault.
I'm not going to blame her.
However, if that sister asked me to sleep with her, it would be natural for me to feel weird.
I want to believe that I'm not the only one at fault.
"Sotomichi-kun has very little interest in me. This is the first time in my life I've been treated with such contempt."
Yamamoto-san is eye level with me and pushes her breasts up even further.
"That's not my intention! I was really looking forward to it, but a lot of things happened!"
"What things?"
Ah, shit.
I immediately made a mistake.
Damn it, what do I do?
"No, that's hard to say..."
"It's hard to say, you say. Is there more than what you meant before?"
Well, I'm already carrying an incredible bomb.
There's no way I can say that I'm already doing something naughty with my real little sister.
"I was having so much fun I got excited all night..."
"Didn't you sleep?"
"Exactly."
If I went out of my way to say that I couldn't sleep because I was so excited about the promise of sex, she'd probably be turned off, but...
"Come on. It can't be helped, I guess."
Yamamoto-san grinned and released me.
Yes, that's her personality.
She doesn't get angry easily and takes other people's feelings into consideration.
A woman as beautiful as Yamamoto-san would have felt the sexual desire of men just by walking around town, but she doesn't object to compliments.
However, the thought of betraying that pure heart makes me feel suffocated with guilt.
If it wouldn't inconvenience Miyu, I would open up and tell her everything.
"Then, Sotomichi-kun, I guess it's good that you're ready too."
Yamamoto-san casually puts her arm around my waist to demonstrate her intentions.
"Ah, ahh-"
It starts here, huh.
An immediate blowjob in a place like this?
It's an ideal situation for a man, but.
What should I do for my heart to get ready.
It's hard to say it myself, but Yamamoto-san also seemed to be looking forward to having sex with me.
Yamamoto-san can't have sex properly because her partners cum too quickly, so she's been frustrated ever since junior high school.
Meanwhile, I finally had the hope of having sex properly, but I ended up being late for my appointment.
It must be quite the buildup.
Yamamoto-san unzips my pants.
She unbuttons the button and inserts her fingers into the waist of my pants.
Then, when my pants were about to be pulled down, I remembered the advice Miyu had given me before going out.
--Take a shower before you have sex with Kanade-san, okay? Otherwise, she'll find out.
"Ah!! Wai-, stop!!"
I held Yamamoto-san's hand and stopped her from taking it off.
I rushed out so quickly that I forgot to take a shower.
My body has the scent of the residual semen that came out twice today, Miyu's saliva from licking off my semen, and the smell of the strong aroma treatment.
Even if she noticed all of this, it wouldn't be conclusive evidence that I had done lewd things with Miyu, but I'm not confident that I would be able to handle it well if questioned.
"Did something happen?"
"I'd like to take a shower. I was sweating."
As a man, it feels better to be sucked as it is.
But not this time.
I have to let go of the possibility that my naughty interactions with Miyu will be found out.
"That much? It doesn't look like your shirt or pants are wet. I don't mind if it just smells a little sweaty, you know?"
Yamamoto-san checked that the waist area of my pants were not damp and tilted her head.
It was a miscalculation.
I tried to avoid sweating as much as possible in order to look good for Yamamoto-san, but it had the opposite effect.
If I had come to her house drenched in sweat, Yamamoto-san would have encouraged me to take a shower.
"Oh, I haven't taken a bath since yesterday! I think it probably smells pretty bad."
I hate to say this myself, but I can't change my back or my stomach.
"Ugggh..."
Yamamoto-san stares up at me.
It was a suspicious look.
"Something sounds like lie."
As expected, I lied too many times.
I was in a hurry and jumped out without thinking.
If I had thought better of it before making the phone call, I could have taken a shower.
"You usually take a proper bath, right? Miyu-chan doesn't seem to tolerate bad smells either."
"Yeah, well, that's right."
"You knew you were going to have sex with me today, right? Still, I understand if you want me to suck you when you haven't already taken a bath. What do you mean you want to take a shower now?"
A shocking question.
The way to escape is blocked.
'You knew you were going to have sex with me today, right?' I was expecting to be asked, so why did I lie so much to explain?
I can no longer revise what I have said so far.
In that case, I have no choice but to counter with new information.
"T-the offline meeting! There was a game I had to play all night, I just became absorbed in it..."
"So, is it a lie that you couldn't sleep because you were looking forward to being with me?"
Ugh, my heart hurts.
I don't want to hurt Yamamoto-san.
There's no way I can turn it around now.
"I'm sorry! I'm really sorry!! I had an earlier appointment! When I went to sleep to recover some of my strength, it was already past noon. I was planning to take a bath, but I didn't have time to do so."
Well connected.
This is not unnatural in terms of context.
"You're lying, aren't you?"
"Eh, ah, no..."
It was seen through in an instant.
Yamamoto-san's eyes are getting sharper and sharper.
When Yamamoto-san started doing naughty stuff with me at school yesterday, the atmosphere changed just like this.
Is this Yamamoto-san's serious mode?
"When you keep changing guys, you start to understand that person's personality even if you don't like it."
Yamamoto-san has much better communication skills than I do.
She has a lot of experience with men, has a wide range of friendships, and is also smart.
A dull man like me was no match for her.
"Sotomichi-kun, you're talking the same way you used to talk to me when you confessed your troubles to me. And no matter how many commitments you have in advance, you're not the type of person to throw away your promise and play games."
This was a statement that really hit home.
Since the problem is related to Miyu, the way I hide it will be the same.
The distance between me and Yamamoto-san was filled with tension.
Yamamoto-san's face brightened up as I broke into a cold sweat.
"Now then, let's make the most effective request to Sotomichi-kun, a timid and kind man who can't keep up with lies."
Holding my waist and squatting down, Yamamoto-san softened her eyes invitingly.
"Tell me which one is true."
Yamamoto-san innocently asks for the truth.
Of course, I can't lie to her when she tells me this.
"It's true that I overslept because I was tired and I was looking forward to today."
"Uh-huh."
"It is true that there is an offline meeting, but there is no game and it has nothing to do with this case."
"I knew it."
"I took a bath last night... but I really wanted to take a shower..."
I told you everything.
Even if I disclose this much information, I won't be able to reach Miyu, though.
"So, there's a reason why you're tired and there's a smell you want to wash away. Is it a problem if I take it off?"
"Speaking of it being a problem, it kind of is a problem, though..."
Maybe I was thinking too deeply in the first place.
I panicked and lied because Miyu warned me about it, but there's no way she'll find out just by smelling it.
"Well, um... it might smell a bit like semen..."
"Umm, Sotomichi-kun?"
Yamamoto-san's stunned face.
Ah, this expression was well done by Miyu as well.
"Perhaps, did you cum by yourself after that?"
"Yes..."
I came at a level that wasn't like I had ejaculated.
It was my sister who let it out though.
"Certainly, when I drank Sotomichi-kun's semen yesterday, I thought that you seemed to have a very strong sexual desire."
A voice that sounded like admonishing a child.
Feeling pity for a man.
It was only after I started doing erotic things with Miyu that my sexual desire became so strong.
My penis used to be smaller.
I wonder what I'm responsible for.
"If you were tired and slept until noon, did you do it in the morning?"
"...Yes."
"Come on. Why couldn't you hold back until you came here? I guess this calls for punishment."
"I think so too……"
Oh no, Yamamoto-san is going to punish me for letting out so much.
Finally, I have to be prepared to die from my stomach.
"No matter how much I'm in the position to ask, there is a limit. You're not allowed to think about Miyu-chan today."
"T-that's going to kill me!"
"No way. I'll treat Sotomachi-kun like a toy."
Yamamoto-san takes off my underwear without any questions.
My penis, still soft, was hanging there.
Yamamoto-san grabbed it by the hand and smelled the smell as she pulled her nose closer.
"It really smells like semen. Sotomichi-kun, you can't ejaculate without fapping to Miyu-chan, right? Did you bust one out to Miyu-chan before you did it with me? Are you really planning to distance yourself from your little sister?"
"I'm sorry..."
I didn't even want to ejaculate this morning either.
The reason I overslept was because of my second ejaculation.
I asked for it myself.
As I thought, it's my fault.
"But it smells nice, too."
"Smells nice? Why?"
Yesterday I had to take two showers because I ejaculated in my underwear.
I wonder if the smell of body soap remains.
"I might know this smell... Hahmu."
"Oh, ahhh...!"
Paakuu, my entire still-small cock was taken into Yamamoto-san's mouth.
The sudden pleasure made my hips jerk and hit the door.
"Nguh... muchyu...... umunyu... fuaah."
Yamamoto-san licked my dick with her tongue for a while, then immediately opened her mouth.
"Nn-..."
And Yamamoto-san staring at me again.
"I think you should take a shower after all."
"Uweh!? Did it smell that bad!? Sorry... I don't think it usually happens like that...!"
"It's fine, it's fine. Come on, get up."
I put my pants back on and went up to the room.
Yamamoto-san immediately showed me around the bathroom and instructed me where to put my clothes.
"Do you apply lotion or toner?"
"No, that's fine."
Sometimes Miyu will give me something that she's tried and doesn't work, but I don't voluntarily put it on.
"What about hand cream?"
"That's fine too. I hardly ever put it on."
I don't like my hands getting sticky.
It bothers me when I use my smartphone.
Miyu puts it on every time she washes the dishes, but I don't want to put it on because I touch things like the keyboard a lot and it gets dirty easily.
"I'll leave you a towel, so you can use as much hot water and body soap as you like. And... this."
Yamamoto-san pointed to the laundry basket at the end.
It has a lid so I can't see what's inside.
"Put the clothes you took off on the lid of the laundry basket. I'll get mad if you dig for my underwear."
"I get it, okay...!"
Am I that distrustful of things related to underwear?
She said she can understand a man's personality, but I can't believe she can't see through things like this morning.
It was an accident, and there was no malicious intent.
Let's keep this in mind just in case.
I took off my clothes after Yamamoto-san left the changing room.
It's my first time being naked in someone's house.
I feel nervous because I feel like I'm exposed outside.
The bathroom was also modern and clean.
It must have been a long time since this building was built.
Cleansing oil, hair bands, and other items were placed inside the case, giving me the feeling that I had finally arrived at a girl's house.
I wash my body thoroughly.
It seems like Miyu's scent still lingers on my neck.
Somehow, I made it through.
If she had asked me more questions there, I would have had no choice but to confess.
The only thing left to do is to successfully complete the sex with Yamamoto-san.
It's quite tough on my lower body, but if I can get through today, I'll be able to enjoy sex next time.
I got out of the bathroom, wiped my body, rubbed the key points by hand, and checked to see if there was any odour left.
"Okay, no problem."
I get dressed and enter the room.
Yamamoto-san's room had few things and was colorful, but it didn't lack a sense of unity, the furniture placement nicely separating the white-based room.
There are two cushions in front of the table, and Yamamoto-san sits on one of them, doing a physical training session.
I don't like the sound of this.
That's the same posture Miyu was in when she was worried about her breast size.
"Thank you for the shower. It was refreshing."
"No no. Come, sit here."
Guided to the cushion next to me, I dropped into it.
My joints are a little tired because I'm used to chairs.
"You know, Sotomichi-kun."
A fresh start.
What is she trying to say this time?
"I was also at fault for seducing you."
Immediately, disturbing words came out.
Will I receive a scolding?
I wonder what I'll be scolded for.
"Sotomichi-kun, you're cheating on me, aren't you?"
That was an unexpected statement.
"Eh. No, umm..."
Why does the word 'cheating' appear there?
Cheating cannot happen without a partner.
I don't have a girlfriend.
"Huh...? Me and Yamamoto-san, you mean, uh..."
Maybe this is a romantic relationship?
Yamamoto-san and I are about to have sex.
If we aren't lovers, then Yamamoto-san and I will be what is called sex friends.
It's true that I'm reluctant to treat Yamamoto-san as a sex friend, but.
If we had already become lovers when I accepted the offer yesterday, I would have liked it to have been easier to understand.
"It's not like that. Sotomichi-kun, you have a girlfriend, right? You had sex with her this morning, right? That's why you were late, right?"
Yamamoto-san questioned me in a confident tone.
She's misunderstanding me to have a girlfriend.
During our exchange at the entrance, Yamamoto-san sensed a woman's odour, but she doesn't believe that the other person is Miyu.
I guess that's how it is, huh.
Normally, she wouldn't think that the person I'm doing lewd things with is my real little sister.
"I've been struggling with this constitution for a long time... So, I'd like to have sex with you, Sotomichi-kun, okay? Even if I don't, I had fun the other day."
Yamamoto-san casually looks embarrassed, with an expression that is neither angry nor happy.
I'm glad to hear her words.
"But, I don’t think I can be happy by making someone else unhappy. I think I’m aware of my charm, and I was the one who seduced Sotomichi-kun in the first place, so I don't think it’s a big deal. It's not that I'm angry. I'll go with you to apologise for everything that happened up until today. I want you to be honest with me."
Yamamoto-san spoke to me with a serious gaze.
This is terrible.
In order to clear up Yamamoto-san's misunderstanding, I have to tell her about Miyu.
If I check with Miyu, maybe she'll forgive me.
If I interfere with her pleasant trip with Miyu and she refuses to talk to me, I'll only be making them uncomfortable.
In the first place, in a situation like this, if I revealed that the other person was my sister, would Yamamoto-san even believe it?
Wouldn't that just make the discussion even more complicated?
What should I do.
How can I get through this predicament without hurting either of us?
"D-did something happen while I was taking a shower!? I thought I said what happened at the entrance was because I didn't want to be found out busting a nut, and I didn't want you to smell it...!"
The misunderstanding that I have a girlfriend.
I have no choice but to correct it.
Yamamoto-san is just suspicious of my attitude when I came to her house, and she simply feels uncomfortable.
"At that stage, okay. As I said earlier, I was trying to understand men. Sotomichi-kun didn't seem to have a girlfriend, and I thought he wouldn't cheat on anybody. That's why I didn't hesitate yesterday either."
"But you see, the only basis for cheating is that I refused to be sniffed, right? Sometimes, Yamamoto-san's predictions turn out to be wrong."
Actually, she's about half right.
Rather, it's weird that she's doing such erotic things even though she's not even my girlfriend, so I'd say Yamamoto-san's guess is mostly correct.
"Even if that's the case, your reaction is too suspicious. I don't like it. Someone is unhappy because of me."
If I had lied better, theoretically I should have been able to convince her.
However, my flustered nature has told Yamamoto-san that this is a lie.
"I'm not angry, and I won't be, you know? I think Sotomichi-kun is a wonderful person, and that will never change."
Yamamoto-san wraps her arms around me and looks into my eyes.
Her eyes were as clear as if she were gazing at a starry sky.
"It's okay. It's a natural thing. You accepted my invitation because sex with your girlfriend wasn't going well, so you wanted to resolve that, right? Until then, please try not to do it for a long time. I know what you said. So, please, Sotomichi-kun, tell me exactly what's here."
Yamamoto-san puts her hand on my chest and slowly moves her lips.
Glossy skin with good color.
Eyes that are both dignified and adorable.
A crystal of ingenuity that is almost unrivalled.
How can I stand up to this goddess?
"H-hypothetically."
I open my mouth while maintaining eye contact.
The hand on my chest must have felt my heartbeat.
If I upset her again, I won't be able to fix it anymore.
"If it's true that I don't have a girlfriend, how can I prove that I don't have a girlfriend?"
The so-called devil's proof.
When something that is not there is determined to exist, the fantasy itself becomes the basis of possibility.
Yamamoto-san believes that I had no choice but to decide to have sex with Yamamoto-san in order to solve the problem that I had a girlfriend while unable to ejaculate without fapping to my sister.
However, there is no solid evidence.
If that's the case, what I should take advantage of is that argument.
"Okay, let me ask you the other way around then."
Yamamoto-san's eyes became sharp.
I'm being observed.
It's coming.
A sentence that will deal a blow to my lies.
Make any prediction.
Ask any question.
So I don't get her upset.
"When I was doing it with my mouth earlier."
Yamamoto-san lets go of her hand that was resting on mine.
Then, she pushed my penis, which she had been holding in her mouth for just a few seconds, through my pants with her fingers.
"Why was there hand cream on here?"
When asked, I was surprisingly calm.
There was hand cream on my cock.
I didn't know that either.
After Yamamoto-san pointed out the smell of semen on my penis, she also said that it smelled good.
If it came with hand cream, I can agree that it smells nice.
But I've never used hand cream.
"Ha--!"
The moment I came to the answer, I took a deep breath.
My heart beats rapidly, and despair creeps up from the bottom of my stomach.
Three answers were derived.
Threefold understanding when linked.
The shock of an unprecedented flash of inspiration made me react with awareness.
It was checkmate.
From the beginning.
Before I took a shower, Yamamoto-san asked me if I used hand cream, and I even said that I had never used it before.
The purpose of that question was to confirm I wasn't on my own before coming here.
The hand cream on my penis was used just before Miyu left.
The hand cream, which had not yet dried, melted from the heat of my cock and was rubbed into me.
That's why Miyu advised me to take a shower.
If it was none other than Yamamoto-san, she would have realised that a girl other than herself was jerking me off.
"A-a-a-are you really sure that it's hand cream!?"
"Yes, it's no use. You understand, right? Don't cover it up."
Yamamoto-san sealed my lips with her index finger.
The problem isn't the smell of the hand cream.
The fact that I was so upset was the biggest reason for my defeat.
"Why are you hiding it so much?"
Yamamoto-san was genuinely curious.
If cornered to this extent, anyone would confess.
Yamamoto-san promises to forgive everything and finish things in the best possible way.
In this situation, no matter how stubborn I am, there's no way Yamamoto-san, who suspects I'm cheating, will have sex with me.
In the first place, it was Yamamoto-san who proposed sex today.
From Yamamoto-san's point of view, there is no reason for me to insist on having sex.
"Well, so you see, look. There are things I can't say, you know...?"
I really want to talk about it too.
I want her to know me for what I am, and not just tell her a partial truth.
"What can't you say? For example, like yesterday..."
By the time I said that, Yamamoto-san had solidified.
Ahh, yeah, I can't hide it anymore.
Yamamoto-san finally came to that conclusion.
No, actually, she knew from the beginning.
Even though all the hints were pointing toward that answer, I still thought it was impossible, so I excluded the most likely answer from the list.
"Eh...!?"
Yamamoto-san was stunned and pulled back her body.
Yamamoto-san's brain has building up logic over and over again, probably hitting an ethical barrier by now.
"Eeehhhhh!?"
Finally, she backed up against the wall.
It's no wonder she's surprised.
My real sister was in charge of my sexual desires.
"Eh, eh? Ehh? Hmm, n, nn? Really? Is that what you mean?"
Yamamoto-san gets confused and doesn't know who to ask.
This is the first time I've seen Yamamoto-san in such a hurry.
"There are circumstances. Also, let me tell you, we haven't had sex. We haven't had sex, and our relationship is definitely not as deep as Yamamoto-san thinks."
"Ahh, yeah. Yeah..."
And Yamamoto-san abandoned the logic she had created with her common sense.
The process of elimination, a painstaking thorough strategy.
An answer that could not be arrived at without denying all imagination.
"It was... Miyu-chan..."
Yes, that's the only option.
Miyu is the only one who can match my suspicious behavior and our past interactions.
"Sorry."
When the secret was revealed, that was the first word I uttered.
I don't know who I wanted to apologise to.
"Is that sorry for lying to me?"
"Although I did have that meaning, I don't think it felt good for Yamamoto-san to know that a real brother and sister were actually doing such things."
Some men may be envious.
But anyone despises sex with a close relative.
"I don't care what you're doing with Miyu-chan, but..."
Yamamoto-san continues, fidgeting.
"Isn't it cheating after all…?"
Ahh, it was that, huh.
What Yamamoto-san was concerned about.
"It's not cheating. Miyu and I aren't dating."
"But Miyu-chan and Sotomichi-kun are in love, right?"
"Aside from me, I don't think Miyu likes me."
"Why!?"
Why?
I wonder why.
If you ask me, it's been a mystery ever since the first time.
"I don't know either."
"Hmm. Sotomichi-kun is just insensitive, but she actually loves her Onii-chan."
"I'd be happy if that were the case, but she told me to get a girlfriend."
If Miyu liked me, she wouldn't have to go through that trouble.
We'd flirt every day, and I'm sure we'd even have sex.
"Is that what happened at the shopping mall?"
"That's the thing. At that time, I was consulting that I couldn't bust it out to anyone other than Miyu."
The reason why Miyu ordered Yamamoto-san to make me erect in the fitting room was because she hoped that if I got excited about something other than Miyu, love would develop from my sexual desire and I would return to being a real human being.
She introduced her to me because she thought it was a serious situation for me to fall in love with my little sister.
"Miyu-chan knew, didn't she. I thought it was strange. It's a secret that you're fapping to Miyu-chan, but she knows Sotomichi-kun has erectile dysfunction. And it's weird that she would ask a classmate to do something like that just because her own brother has erectile dysfunction."
My senses were numb because Miyu's actions were always extreme, but her orders in the fitting room were also too much.
If it weren't for Yamamoto-san, it would have probably fallen apart much earlier.
Since it's Miyu, she may have taken the plunge after getting a handle on Yamamoto-san's inner situation.
"You know, Sotomichi-kun."
Once the conversation calmed down, Yamamoto-san sat down next to me again.
"If you keep doing naughty things with Miyu-chan, you may never be able to ejaculate to anyone other than Miyu-chan anymore, will you?"
I felt dizzy from the fact that it was so true.
"Or rather, Miyu-chan doesn't like Sotomichi-kun, and Sotomichi-kun wants to be able to do naughty things with someone other than Miyu-chan, so why are the two of you doing lewd stuff together?"
I wish it were that simple.
I can't answer that either.
I guess half of it is because of my sexual desire.
Miyu has no reason to go along with that sexual desire.
Miyu's attitude softened after I was punished in the toilet.
At that time, Miyu had given up on something, and recently she has gradually started to tolerate skinship with me.
It's a positive change for me, but Miyu should have been angry, so I wonder why things are changing in a direction that makes me happy.
As Yamamoto-san says, does she actually like me?
Did she fall in love with me while doing naughty things?
Was everything up until now just a cover-up?
For the most part, I still haven't gotten an answer as to why she can drink my semen so calmly.
It would be understandable if the semen was so delicious that she became addicted to it, but it was so bad that she dismissed it as having a terrible taste.
Miyu seems to have sexual desire as well, and if she just wants to satisfy that desire, she has a perfect partner named Haruka.
If she's starting a relationship with me because she doesn't want to admit that she's a lesbian, then it doesn't have to be me.
Miyu is a popular woman.
There are plenty of men who are better than me.
At all those men, Miyu scoffed.
I heard from Yuka that Miyu has an extreme dislike of men, but the fact that she's so cute yet doesn't have any aura of men probably means that she actually hates men.
She engages in sexual acts with me, but if she really doesn't like men, including me, then there's no reason to deny that she's a lesbian.
Even if I were the only one she's in love with, she wouldn't respond to my feelings nor confess her love to me with a 100% success rate, because she's avoiding brother-sister love as something forbidden.
This is something Miyu has said many times.
It's a pretty unlikely assumption that she likes me, but this is the best explanation for Miyu's behavior.
But if that's the case, then the problem is the first thing.
Why did Miyu decide to help me masturbate?
Even though she was able to maintain a sense of distance by not speaking at all, Miyu kept trying to make me fall in love with her, even though she said that love between siblings is not allowed.
For me, it's like going from nonexistence to existence.
There isn't a trigger.
It doesn't all fit together.
There's no way I can tell anyone the truth because I haven't sorted everything out yet.
"As for the relationship between me and Miyu, I really don't know why it's like this. I just want to know too. Miyu won't tell me anything."
In this hopeless situation where no one was to blame mixed the sounds of lamentation.
If I could avoid lying, I wouldn't have deceived this kind goddess.
"Sotomichi-kun’s circumstances are complicated too, huh."
Yamamoto-san seemed to have realised something, and stopped asking me more questions.
Instead, Yamamoto-san puts her hand on my head and strokes my hair.
Yamamoto-san has big hands and a high body temperature.
It calms me down in a different sense than Miyu.
"One thing I can say is that the more options I have, the better. There's no doubt that Miyu is trying to make me become independent of my little sister. Some possibilities may be that Miyu is just as kind as a saint, or that she may have started to do naughty things with me with the intention of making me so emotionally absorbed with her that I can't get bust a nut without her.
"That's quite bold, isn't it?"
Yamamoto-san keeps stroking me while blooming a smile.
I guess this is what it felt like when I was a child, being cradled by my mother.
"Anyways, I want to choose what's best for Miyu. If I want to become independent of my sister, I want to make sure I have a body that can have sex with other people without any problems so that I can alleviate the burden on Miyu."
I like Miyu.
I would be happy if Miyu liked me.
But I don't want her to just cater to my sexual desires.
“So, uh, the atmosphere ended up being like this…”
If I could do it with Yamamoto-san, I would.
"Fufuu, that's right. Well, one last thing, can you answer honestly?"
"Anything I know."
Yamamoto-san sat up straight, straightening her posture, and I followed suit.
A serious expression.
Suddenly, she burst into a grin.
"How many times did you do lewd things with Miyu-chan after you did it with me?"
When asked the question, I coughed.
Even as I tensed my abdominal muscles and looked like I was in pain, Yamamoto-san was smiling the whole time.
"That's, um, the number of times I let it out, is that okay?"
"That's right. I'm sure it's a considerable amount, since you slept through the afternoon."
Damn it, she looks like she's having fun.
Even though this is serious.
"Even if it's a lot, you won't be turned off?"
"What are you asking me now?"
"Well, that's right. Then, I'll say it, but... um... at night... in... the morning... that's why..."
When I counted it, it was a terrible number even for me.
"Seven times, I think?"
"Ohh. ...You two are really lovey-dovey, aren't you?"
Half of the time I was forced to ejaculate while Miyu gave me a disgusted look, though.
"Sotomichi-kun, can you still afford more?"
"No, to be honest, it's pretty tough. In fact, after seven times, it's pretty impossible."
Eight times, including the one when Yamamoto-san served me.
The day before that, I had 5 massive ejaculations.
I wonder if my body is okay.
"I see. In that case, let's eat lunch and go to bed."
"I'm grateful, but is Yamamoto-san okay with all this?"
"It doesn't matter if I'm the only one having fun. I'm going to cook a little bit, so please wait."
Yamamoto-san said so and stood in the kitchen.
She removes the wrapped ingredients from the fridge and starts warming up the frying pan.
Did she prepare lunch for me?
The guilt of oversleeping weighs on me even more.
Proper sex with a man is something Yamamoto-san has always wanted.
I have no choice but to try my best to recover.
"You need to eat something that will give you energy, huh."
Soon, Yamamoto-san brought the food to the table.
Stir-fried chicken and nuts.
Caprese with tomato and mozzarella.
Grilled scallops and avocado with cheese.
Takikomi rice with eel.
Plus a watermelon dessert.
She's totally killing me by ignoring the food combinations.
At the same time, it also expresses Yamamoto-san's expectations for sex with me.
"Thank you for the meal."
Every time I ate, my energy went through my entire body.
The carefully cut ingredients conveys fire and love.
Not just for me as an individual, but love for humans in general.
This is Yamamoto-san's kindness.
"Nfufu, I've prepared a lot of things to cheer you up for dinner, so eat a lot of them."
I'm sure she'll squeeze out as much as she can tonight...
From now on, it will be a rotation of part-time work, sleep, and sex.
What should I do with my summer homework?
It would be easier if Yamamoto-san could do it with me.
"I didn't bring my sleepwear, how should I sleep?"
"Maybe you can wear my T-shirt, considering my chest size. I have some exercise shorts left over, so I'll lend you those."
I'm glad I'm about the same height as Yamamoto-san.
Although, as a man, I'd like to be a little taller.
After feasting on Yamamoto-san delicious food, I accepted the nightgown, feeling like I was about to give up.
It's a bit strange since it's intended for women, but Yamamoto-san also lent me the biggest one she owns, so I don't think it will get any better.
The bed was rather large.
A semi-double a few centimeters wider than a typical one.
She said she's never had anyone other than her family come in, but I guess she likes sleeping.
Yamamoto-san gets into the bed first, spreads her arms and invites me in.
When I got under the futon, Yamamoto-san pressed her boobs against my face and hugged me.
I can feel a tremendous enthusiasm for tonight.
"Even if you're horny, sleep properly."
Yamamoto-san smiles bitterly at my dick, which is starting to grow, and strokes my head again.
"When you wake up, let's do a lot of naughty things."
While being held in that motherly embrace, I let out all the fatigue from today and fell into a sleep so deep and peaceful that I couldn't believe it was daytime.
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