I longed for a date at home.
The protagonists of games and anime, despite being students, are all depicted to live alone, leading to all sorts of indecent situations regardless of their actual reality.
"I'm sorry, it's a familiar sight every time."
"It's fine. It's a pain to go out at this time of year anyways."
In my room, Sachiko and I sat on the bed together.
It's been more than two weeks since I was able to express my complicated feelings to Sachiko, who lowered her side tail.
Now that we're in the second half of July and it's finally starting to feel like summer, unable to ignore the air conditioner when playing in her room, Sachiko lets her hair loose when it gets cooler.
The only time she keeps her hair tied up is when she uses her mouth, and unless she's eating or giving a blowjob, Sachiko usually keeps her hair straight indoors.
We hang out once in a while, sometimes cook for each other and teach her, but in the end, a man and a woman meet.
I don't feel obligated.
As a man, my sexual desire builds up within a few days whether I like it or not, and Sachiko doesn't refuse my invitations, saying she didn't dislike it because it somehow feels good.
After staying with me for a while, I became uneasy and the distance between me and my body became closer.
When we get close enough that our shoulders are touching, we use our arms and thighs to get physical with each other, and finally say the usual words.
"...It's about time we do it."
"Yes."
I didn't care about how I sequenced my invitation.
Since we are dating on the premise of sex, it is only natural that sex will occur if a man and a woman are in the same room.
Sachiko knows this, and when she somehow senses the atmosphere, she starts looking at me more often too.
Our order of sex was also roughly fixed.
Although it was a pain to think about it, it was because it was the most reasonable and efficient way.
First, I take off Sachiko's clothes and touch various parts of her body, especially her chest.
After confirming that her genitals are wet, I use her fingers to loosen the inside of her vagina.
This is my foreplay.
Sometimes I do cunnilingus, but it's pretty painful to do, and Sachiko doesn't really like it either, so I don't do it anymore most of the time.
It would probably be best to make the girl cum several times before inserting it, but I don't have the skills to make a girl cum, so I gave up.
Once Sachiko is ready, the next step is for her to give me a blowjob.
The reason why her blowjob comes after foreplay with Sachiko is because she doesn't like being undressed unilaterally.
If she ordered me to do things without telling me whether or not like Miyu, the situation would be different, but Sachiko is basically passive, so I never find myself in that situation.
Her blowjob still didn't feel as good as I had hoped.
Even though the feelings I had were high towards orgasm, I still lacked enough physical stimulation to reach the finish line.
The viscosity and warmth of that saliva in her mouth makes me erect, but the power of her tongue can't compensate for the stimulation I usually get from jerking off with my hands, and when she's not licking my erogenous zones like the back muscles with pinpoint precision, the feeling of ejaculation disappears.
It was difficult to ask Sachiko for such skill.
Although Miyu has learned the basics exactly, Miyu has no experience in giving blowjobs, and she hasn't been taught exactly where and how to stimulate me.
So at the end, we move on to insertion.
Maybe it's the natural progression since it's sex, but for me, I sometimes had the desire to cum inside her mouth.
"Sachiko. I'm inserting it."
"Yes."
I press my hardened penis against Sachiko's slit lying on her back on the bed.
Because the entrance to her vagina hole is not visible from above, at first, I mistook it for her butthole.
With that as a joke about a male virgin's lack of experience, I foolishly thought it was impossible to make such a mistake, but when I am actually trying to find the location of the hole, sometimes I am so unsure that I get impatient.
"...Doesn't it hurt?"
"It's fine. It feels good."
Even though we had sex many times, I made sure of it to Sachiko every time.
Sachiko's reaction was thinner than I had imagined.
I don't have to worry since she always says it feels good though.
I realized that trying to make people moan while writhing in discomfort meant I had been watching too many AVs and eroges.
I shake my hips back and forth and let our meat come together.
I wonder if I could feel her fleshy folds better if it wasn't through the rubber.
I stroke at different angles to rub the vaginal flesh with the back side of my glans.
Even if I thought I was moving it to hit it in a better place, I still don't know the details of her vagina.
There's just the sensation of flesh and warmth.
Despite that, I still get excited and feel like ejaculating.
"Sachiko... It's going to be intense...!"
"Come... please...!"
The bed was making creaking noises, and I was only getting more and more anxious.
--I wonder if I won't be able to ejaculate again today.
It's already been five days in a row that I've had sex with Sachiko.
The cram school set aside a week off to adjust the schedule for summer classes, and I asked Miyu to let me borrow her house after school during that period.
I wasn't addicted to sex; in fact, I hadn't had sex since the day I lost my virginity.
Or maybe even that first sex was just Miyu's power to make me ejaculate, and we had never yet had proper sex as lovers between me and Sachiko.
I keep shaking my hips, wasting my muscles and my time.
I couldn't feel the sensation of ejaculation arising.
My cock should have been stiff and ready to cum.
"Haah... angh.... ah.... Onii... san...!"
Only the atmosphere was rising as my movements intensified, and when the flow arrived to the point that I had to cum, I held a dilemma within me.
Should I convey that I'm satisfied with how things are, ending it all smoothly?
Or should I honestly that I can't cum when having sex with her?
"Sachiko... Cu-... cumming..!!"
I hugged Sachiko tightly and pounded my hips while listening to her moaning voice.
Listening to Sachiko's moans, whose voice was similar to Miyu's, was the only way I could ejaculate.
It longer felt like I was having sex with Sachiko.
Even though I'm physically overlapping with my lover, I'm still using my real little sister as my fap material.
There was no way I could confide such a thing to someone with whom I was in the middle of sex, finally ejaculating with Miyu's figure and Sachiko's voices, which I could see linked together in my mind for a few moments.
"Haah... haah..."
"Onii-san... it's... amazing..."
We have a physical relationship, but our spiritual connection is most important.
Even if I don't have any technique, if I do it as intensely as I want, it will create a good atmosphere and make her feel good.
It seemed that the fact that I was using all my strength to ejaculate led to Sachiko's pleasure.
That's why Sachiko never complained.
Sachiko and I lay naked on the bed, breathless.
Even though in reality, I just want to cum thinking about Sachiko.
I have no confidence I can achieve that.
It's been two weeks since this happened, and the feeling inside me has grown to the point where I can no longer ignore it.
"I have cram school tomorrow. What will you do the day after tomorrow? Shall we do something naughty again?"
"Yes, well, I'll contact you tomorrow when I think about it."
"I understand."
Over the past week, I've been exploring ways to cum only to Sachiko.
However, I ended that night without being able to ejaculate without using my little sister as fap material.
On Friday, I went to school feeling gloomy.
Suzuhara and Takanami were worried about me, saying, 'You're spacing out. Is something wrong?' Yamamoto-san asked, 'Are you okay? Do you want to rub my boobs?' in a tone that sounded like she was going to let me actually rub them. I unconsciously refused.
Well, that's only natural because I have a girlfriend.
I still can't get the feeling of Sachiko and I being lovers.
There's nothing I don't like about it.
It's just that my little sister's influence on me is too strong for me to focus on romance.
If I were to explain in an otome-like manner, there wasn't enough thrill.
I know that the right way to be a couple is to get along without such things.
But I needed a trigger to become aware of Sachiko as a woman.
Sachiko has neither denied nor resisted me because of her innocence.
If I ask her for a favor, she will listen to most things.
That, which I should have been grateful for, was also a source of trouble for me.
Because I have to prepare all the triggers for changing my perception myself.
What a luxurious problem.
Despite that I can have as much sex as I want with such a cute girl.
I have no choice but to say that I am blessed.
If my past self were to meet a man with such silly problems, I would have no hesitation in attacking him.
That's why I'm making selfish demands of both Sachiko and myself.
"I'm home."
I opened the door to my house, feeling down.
It's unlocked.
Miyu is back.
I heard the sound of water running from the kitchen, and when I opened the door to the living room, I saw Miyu tying her hair and washing the dishes.
Thump, my heart made a really loud sound.
I was fascinated by the sight of Miyu scrubbing the dishes with a sponge in her hand and a serious look in her eyes.
Judging from Haruka and Yamamoto-san's well-groomed faces, Sachiko and Miyu shouldn't be much more or less good-looking.
Still, Miyu is cute no matter what moment I look at her.
She was dressed casually, changing from her uniform to a T-shirt and skirt for indoor use.
With a white neck and blood-red lips, alarm bells went off in this body of mine.
It's not a good feeling for someone who has a girlfriend, much less for a real older brother.
Even though I knew in my rational mind that I was detestable, I couldn't change the fact that Miyu was special in my eyes.
"I'm home."
Even when I called out again, Miyu simply replied, "Okay."
She's just washing dishes, but she moves her hand with single-minded devotion.
It's like she's trying to escape from other thoughts, that kind of concentration.
Even Miyu has her own life to deal with.
Maybe something happened at school.
I look at the summer vegetables simmering in the pot, open the refrigerator, and take out a plastic bottle.
Loosening the lid, a subtle clicking sound rang out.
After the sweet smell of carbonated drinks, what tickled my nostrils was the floral scent of Miyu's hair.
It is said that a girl's smell is the residual fragrance of shampoo and perfume, but I believe that this is a girl's unique smell.
It's warm, contains pheromones, and ignites a man's instincts. My sexual desire easily gave in to that scent.
I got an erection.
My penis was erecting so hard behind Miyu that I didn't even feel sorry anymore.
I want Miyu to treat me properly as a man.
She introduced a cute girlfriend for me.
She asked her to come to our house to have sex for me.
I had to repay my little sister for what she had done for me, and in the face of all that.
I couldn't afford to fail, so I had to graduate from being a siscon as well as virginity and have a body that didn't lust after my little sister.
Maybe that pressure was driving me crazy.
It's the same with men who can't climax when they're stressed.
That's probably why I can't have sex with Sachiko.
So, I think it would be better if I don't worry too much and just say, 'Before I realising it, I became devoted to my lover.'
With that in mind, the feeling of uneasiness that had been rooted deep in my chest suddenly disappeared.
“How long will you take to finish dinner?”
"An hour."
A somewhat excessive response.
She seems to be in a particularly bad mood.
The fire in the pot was off, and there was a faint scent of spices coming from inside.
As soon as I peered into the rice cooker display, the timer activated.
Threatened by the electronic noise, I jumped out of the living room with Miyu absentmindedly continuing to wash the dishes.
"Haah... should I bust one out."
I threw my uniform pants into the washroom and entered the toilet, looking a bit pathetic having just a shirt and underwear on.
The tip of my glans is wet and my underwear is pointed.
When I sat down on the toilet seat and released my cock, I felt excited as I masturbated for the first time in a while.
Today, I've decided to use Miyu as my fap material.
When I imagine Miyu observing my ejaculation with those unfortunate eyes, my inner thighs begin to tremble.
My brain was full of joy.
I don't know if it was adrenaline or dopamine, but whatever it was, something bad was being secreted in torrents.
Although I had some hesitation as to whether this would be a bad idea, I decided to continue as it seemed like stopping at this point would cause abnormalities in my brain.
"Fuuh... nn... kuh..."
I missed the feeling of a hand wrapping around my cock.
To be honest, I want Miyu to watch it and take it in, but I can't hope for that now that I have a girlfriend.
In the first place, she made a girlfriend for me so that I wouldn't have to do that, so it's only natural.
Everything that happened was too abrupt.
I should have separated from my little sister more slowly.
"Haah... uuu... shit... It feels so good...!"
It's often said that masturbation feels better than having sex with a girl.
I couldn't believe it when I was just hearing the rumors, but now I understand.
Even with a girlfriend, I need time to masturbate.
Miyu comes in front of me and sits upright, holding her skirt and staring at my cock with impeccable posture.
Miyu opened her mouth and stuck out her tongue as she saw my Cowper's fluid sloppily drooling.
My brain clearly remembered the moisture of her mouth, the amount of saliva left in her mouth, and even the temperature of her breath.
"Miyu... haah... Miyu......!"
Within a few minutes of masturbation, my urethra was already squeaking.
My cock drools, waiting for that moment in spite that Miyu's mouth is going to swallow it all.
I want to let it out.
I want it out already.
My testicles rise and begins its emergency production of sperm.
Despite the fact it wasn't even inside a vagina.
Just by imagining ejaculating into Miyu's mouth, my brain was sending out orders to increase the amount of semen.
"Ahh... Miyu... already... cumming...!"
I made a final, intense effort, strongly moving my right hand up and down.
At that moment.
When I heard the sound of the doorknob being twisted, I realized that I had forgotten to lock the door.
I hurriedly reached out my hand, but it was already too late and my eyes met Miyu's on the other side of the open door.
Her gaze was reflected back into my glans.
"O... Onii-chan, what are you doing in such a place!"
My thoughts were muddled with excitement, being scolded in a fit of rage that I couldn't have possibly predicted.
No matter how bad of a mood she was in, I'd never been yelled at like this before.
"Onii-chan... you idiot...!"
Miyu squeezed the middle of her skirt tightly, making her eyes tear up.
Seeing her breathing heavily, I finally understood the gravity of the situation.
"M-my bad! I'll leave right away!"
It wasn't because Miyu was in a bad mood.
It was because she was holding back on her pee.
She must have felt the urge to urinate from when she was cooking and had to hold it in until she reached her limit because of the hassle of wiping the oil off her hands.
After washing the dishes, she ran into the toilet and found it unlocked. Miyu was relieved, but what caught her eye was me occupying the toilet, even though I wasn't doing my business.
The despair and hatred felt by Miyu was immeasurable.
Before I could get up, Miyu started taking off her panties.
Miyu rarely comes out naked even after taking a bath, so it's a big deal for her to pull down her panties in front of others.
I need to empty the toilet bowl as soon as possible.
This mutual impatience created an exquisite mismatch in gears.
I try to raise my hips from a forward leaning position, and I step forward to balance backwards and forwards.
What lay ahead was Miyu's panties hanging around one of her ankles.
The moment I stepped on that, the worst development occurred in my mind.
By the time Miyu tripped over her own panties and lost her balance, the outcome was irreversible.
"Uwa-... wai-...!"
Miyu pushes me down and my hips hit the toilet seat.
Before I could feel the pain, Miyu collapses onto me, both of us straddling the toilet seat, facing each other.
Leaving each other's genitals exposed.
A stiff, wet cock stood out in front of me, and worst case scenario, it could have ended up with an accidental insertion.
Instead, my cock went inside Miyu's T-shirt and smeared its juices on her stomach.
Before I could apologise, I grabbed and pushed Miyu by the shoulder.
Miyu doesn't like skinship from the beginning.
There's no way she could stand having such delicate places touching each other.
However, Miyu didn't move.
On the contrary, she pushed her thighs closer towards me and hugged me as hard as she could.
"Mi-Miyu...!?"
In a series of surprises, I was completely frozen in place.
Miyu put one knee on my thigh and pressed our bodies tightly against each other.
"Fuuh... haah... uuu...... uguh..."
She gripped my arm so tightly that it would leave a mark and buried her bright red face into my shoulder.
"Onii... chan...... stupid..."
Miyu tries her hardest to suppress her bladder from bursting, and pushes her body in to make sure she has space to pee in case the worst happens.
I pulled my hips back as well, but I couldn't move because my legs were entangled in a half-hearted position.
Miyu's stomach presses against my cock, and with her pre-emptive sliding, she exquisitely massages my back muscles.
I would have liked to show some consideration to Miyu, exposing herself with the shameful play of public urination.
"Miyu... like this... I can't--!"
My cock, which had been aroused so much by masturbation, was no longer able to stop the outburst of ejaculation.
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