Chapter 23

Miyu and I straddle the toilet seat, pressing our bodies against each other.

My cock was pressed against Miyu's stomach, and Miyu could vividly feel its twitching movements.

"Onii-chan... don't... let it out... don't..."

Speaking in a desperate voice and looking up at me with a damp gaze, my desire to ejaculate grew even more.

Miyu already knows that the muscular contraction of my cock is followed by my ejaculation.

If I let it out like this, Miyu's T-shirt and skirt will become muddy with semen.

Miyu hates having her clothes soiled more than anything being done to her body.

If I bukkake her while she's fully clothed, it won't end just like that.

However, my ejaculation order has reached the point where it can no longer be cancelled.

It's like holding a glass full of water using a lot of surface tension with one hand.

You can dam it up for a while, but you can't keep it from overflowing.

Miyu hugged my body with all her might.

Her flabby twin mounds were crushed onto my body, allowing me to feel its softness even through her bra.

Her breasts are so big that she can't secure enough body space just by leaning in lightly.

Miyu grabs my arm and breathes heavily.

She had no choice but to pee right here, but it seemed like she was going to hold back until she couldn't stop herself on her own will.

"Don't make it twitch... uuuu..."

It would be easier if I let it out.

Miyu, who didn't stop resisting until the end, was struggling as I was making my penis twitch.

It's probably stimulating her bladder area.

I didn't do it on purpose.

It's just like hiccups, even if I stop it for a certain amount of time, I just can't help but twitch.

And yet.

"Auu... no... stop it..."

It was like I was forcing Miyu to pee.

A little sister who is suffering from the limit of her urge to urinate.

A humiliating look no one wants to see.

I'm stimulating her bladder to urinate.

Ahh, shit.

I'm dying of excitement.

"Aah... ah..."

Eventually, Miyu's grip on my arm begins to weaken.

Her skeletal muscles, which had continued to listen to Miyu's desperate wishes, finally seemed to have given up on its role.

The tension in her facial muscles was also released, and Miyu's eyes were out of focus somewhere as she let out a quick exhale.

Finally, Miyu looked up and stretched out her hands while staring somewhere behind me.

"Don't ejaculate, got it, Onii-chan?"

Miyu said that with a weak face, and then covered both my ears with her fingers.

The sound of air closing inside my ears become muffled.

As Miyu looked down and rose her cheeks, I realized the limits of my own endurance, witnessing that moment.

Even as I tried my best to kill my momentum, I could hear the sound of it hitting the water surface even through her fingers covering my ears.

The faint scent of acidity passing through my nose conveyed that fact to me irresistibly.

Miyu is peeing.

Right in front of my eyes.

While our bodies are right next to each other.

I wonder how much shame she must be feeling behind her expressionless face as she lifts one leg up.

I ejaculated seeing that.

I ejaculated my semen over and over again in Miyu's T-shirt.

And I couldn't offer any words of apology.

It felt so good that I almost moaned like a girl.

Miyu's expression remained dazed and unchanged.

Even though it was probably really troublesome to have it in her clothes.

Even if I couldn't see my firing port, there is no doubt that it was the largest amount of ejaculate I had ever released, from the strength of semen passing through my urethra.

Even after my orgasm was over, Miyu continued to urinate.

My ears remain blocked, Miyu's body temperature being transmitted to me from her hands.

Because Miyu had been holding back the flow of urine, she continued to pee for nearly a minute.

Its length, amount, and smell all torment Miyu with shame.

The semen that had been poured directly onto her was dripping all over her stomach, and she was in such a horrible state it was almost insulting.

After releasing what we had together, the two of us remained silent.

She didn't move at all, and was frozen for about five minutes.

Eventually, my ears are freed from Miyu's fingers.

My cock was still hard.

"Onii-chan."

A resonant voice.

Miyu put her hand inside her clothes and frowned slightly.

The hands that came out of her clothes were covered with so much semen that it was opaque, milky white.

"Miyu... sorry... I..."

I couldn't resist.

Unlike the urge to urinate, ejaculation is something that can be controlled.

At least that's what Miyu thinks, and she's not wrong.

I occupied the toilet to masturbate.

I stepped on her panties and made her fall.

I ejaculated on my little sister who was experiencing the humiliation of being watched urinate.

I even stained Miyu's most cherished clothes with my semen.

I have no excuse.

Even if I wanted to apologise, I didn't know how to apologise.

"You came a lot, though."

Miyu uses her hand to squeeze out the semen that had adhered to it.

Her eyes had lost their irises.

"Why couldn't you have held back?"

After checking the stains on her clothes, Miyu took off her T-shirt, then removed her skirt by pulling on its elastic waistband as much as possible.

"If you like it that much, just let it out then."

Miyu was only wearing a bra.

That semen-painted hand grasped my cock, which was still erecting.

"Mi... Miyu...!?"

Miyu's hands were handling my cock.

While intertwining my semen.

With her small hand, she stimulates my entire body, sliding it from the base to the tip of the glans.

"Aah... guh... Miyu... ahhhh......!!"

The entire palm of her hand warms my cock, while her fingertips absolutely hitting my pleasure spot.

Even though I had just came, I couldn't hold back my ejaculation any longer.

Is it because I'm so excited about Miyu that the feeling of ejaculation I have increases so much?

Despite the fact that this must have been Miyu's first time touching something belonging to a man, let alone mine.

Having her handle it now felt even better than doing it myself.

"Haah... ah... I'm... aah... still...... cumming...!"

She pinpoints the erogenous zones that I want stimulated.

I was stunned by that technique and ejaculated for the second time.

Like a volcanic eruption, semen gushes out like a volcanic eruption, and the amount of fluid wetting my cock keeps increasing.

"Ah, aah!! Miyu! I'm already cumming...!!"

Miyu didn't stop even after I ejaculated.

On the contrary, this time she wraps her hands around my cock.

"Aaah, ah-guh... cumming... aaAAauuuaa-feels so, good...!"

With her left and right hands, she plays with my glans and the back of my penis, sometimes rubbing from the base of my rod to the surface of my ball sack, massaging my testicles.

The pain only hit me at the start.

Now, only pleasurable substances flood my brain.

Even my third ejaculation was just around the corner.

"Why, is this... haah... aaaah... so... good...!!"

My head was so dizzy that I was drooling.

My cock just enjoys being played with by Miyu, drowning in pleasure.

"How many times do you think I've seen Onii-chan do it alone?"

The grip that rubs my cock becomes stronger.

The strength with which she tightened his grip in anger exactly matched the force I exerted with my grip before.

"It feels good, doesn't it. You can still cum, can't you."

Threatened with empty eyes, without being allowed even a slight chance to hold back, I ejaculated for the third time.

Even though my first ejaculation produced a considerable amount, the amount of ejaculate that popped out made it hard to believe I had been ejaculating consecutively.

Miyu's hand hasn't stopped yet.

"ah... Aaah... haauhh... Miyu, I can't... take it anymore...!"

Even after begging her, there was no sign of Miyu stopping her hand onanism.

If I could forcefully push her away, that would be the end of it.

But I couldn't move.

My brain was dominated by my feelings of guilt towards Miyu and the endless pleasure she gave me.

"It’s still hard even though you came so much."

Her onanism became even more slippery and gradually moved towards the front.

"Onii-chan loves cumming, doesn't he."

She tortures my glans, ejaculation after ejaculation.

Miyu didn't seem to want to stop until she made me squirt.

"AAAAH!! I-it, hur.. aaAAAAHH!!"

From my urethra to my neck, there was nothing but pain.

Pain so great that I was in agony and crying out.

Although it didn't feel pleasuring, there was definitely pleasure there.

"Aah, haah... I'm gonna die... I'm dyainguh......!"

The pain felt good.

Pain is not converted into pleasure.

My brain is delighted to be tortured.

I had reached a point that I should never have entered.

I turned my head back, and I think at that moment I was even rolling my eyes back until only the whites of my eyes were revealed.

"Uwa, fwuaahh, cu, cumming-! S-shit, kuauah, dying... cumming...... aaAAAAHHH!!"

I had never experienced squirting before.

I ejaculated repeatedly like something out of an eroge.

The muscles of my penis couldn't stop convulsing, and semen flew out every time.

Miyu doesn't stop her hand even while it is spitting out vigorously.

On the contrary, her strokes become even more violent, urging me to ejaculate.

"aaah... Aaah...!!"

There was semen all over the place.

It was even on Miyu's bra and cheeks.

Still, Miyu did not stop her hand.

I ejaculated and ejaculated and finally stopped squirting after ejaculating ten times.

I go limp like a zombie, banging my head on the toilet faucet as I lose strength.

My penis remained rigid post-mortem.

Even though its magazines were already empty, it still stood tall with the firing port firmly fixed.

That cock of mine.

Miyu started rubbing it with both hands.

"AAAAHH!! It h-hurts!! It hurts, it hurts, it hurts-!! Miyu, please, st, stop, already...!!"

My skin was so sore it was about to bleed.

The hot stinging pain felt like someone was burning my cock with a lighter.

"If it feels good, it's not a punishment. Onii-chan."

Miyu doesn't stop her hand.

After being tormented with pleasure, the torture began.

"Miyu, Miyuuu... aah, I'm begging, please, forgive me... ahh, aaaaa..."

No matter how much I plead, Miyu won't stop her hands.

The pain, which until now was only felt by my brain, was now distributed throughout my body.

My muscle strain, teeth chatter, and internal organs squeeze.

Eventually, my body felt like I was floating, as if I was in another world.

If I reach the point where I ejaculate like this, it's no joke; I'll die from embarrassment.

I'm being killed.

I make my little sister angry, she handles my penis, and now I die a cruel death.

"Your little sister made you cum. Onii-chan is in happiness, isn't he."

Miyu catches me falling down with her shoulders.

I can't let out my voice anymore.

Only the sounds of Miyu's onanism, splapping and splapping, were heard in the silence of the toilet.

Before I knew it, the pain was flying away.

I can't feel anything, as if the nerves in my neck have been severed.

Or maybe I'm already dead.

"Onii-chan. Cum."

Under Miyu's command, the sensation only returned to my lower abdomen.

Exhausted from repeated ejaculations, my rod feels like it's cracked, and the urethra is so worn out that it no longer feels pleasure.

Under such circumstances, I only reacted to the voice of Miyu and fired my semen.

A sufficient amount for a single ejaculation was in the hands of Miyu.

"...Hot."

With that one word from Miyu, the torture came to an end.

I felt my erection finally subside as my whole body became weak.

My glans are tingling.

I might be so sensitive that I won't be able to wear pants anymore today.

After the thorough onanism was over, her consciousness mysteriously returned to normal.

It was a terrible predicament.

Miyu's body is so muddy with semen that I can't believe that I released it all by myself.

I wonder how much semen it would be if I collected all the semen I gave out today.

"...wait, Mi, Miyu! That, part of yours..."

While looking at Miyu's body, I discovered a serious crisis.

My semen was drooping between Miyu's crotch.

Although only on the surface, the risk of pregnancy wasn't zero.

I hurriedly crumpled up a roll of toilet paper and handed it to Miyu.

"Ahh, this... It doesn't really matter."

Miyu didn't want to take it.

She just stares at the semen dripping into her crack in a daze.

There's no way it doesn't matter though.

I wonder how much of a shock it must have been.

"I-I'll wipe it. I'm really just wiping it, okay."

I put my hand under Miyu's crotch.

I wanted to avoid touching it with my fingers as much as possible, but there was no way I could remove the highly viscous semen just by applying a piece of paper to it.

Trying not to get too excited, I turned my mind to business and wiped away the semen that had covered Miyu.

Since Miyu didn't move on her own, I also wiped the semen from her stomach.

I take the toilet paper over and over again, and each time I get frustrated with the amount of semen I released.

After finishing wiping, Miyu finally stood up.

Because of her strange posture, she stretched her paralyzed legs and took a breath.

Semen drips from between Miyu's breasts.

I had no idea that my semen was flying all the way into her breasts.

Miyu also noticed that it was hanging from her own breasts and reached for the hook of her bra.

Perhaps her sense of shame had blown away in her daze, and without hesitation Miyu exposed her true self in front of me.

A large white bulge.

Her roundness is formed in elasticity and her nipples are slightly upturned.

Unlike Yamamoto-san's perfect proportions, Miyu has an unbalanced figure with a petite figure and big breasts.

That was the best source of excitement for me, a 2D hobbyist.

Miyu takes the toilet paper from me and carefully wipes the space between her breasts on the spot.

After throwing it into the toilet bowl, she picked up the T-shirt and skirt that had been thrown off on the floor.

As she bent forward, her cleavage was emphasized and her bountiful breasts swayed. Unbelievably, my lower body had regained its hardness.

While she was picking up her clothes, Miyu saw my dick growing bigger in front of her, and as soon as she stood up, she looked at me with pity.

I'm sure that's what the eyes that look at trash refer to.

Miyu took the clothes in her arms and let out the loudest sigh she had ever sighed.

"That's enough."

She opens the toilet door and leaves.

Upon seeing her back, I was overtaken by a feeling of unease.

I was abandoned.

Just like garbage.

I understand that it isn't reasonable that her older brother, who has a girlfriend and had sworn not to use her as fap material, remained lustful forever.

I can't even think of an excuse.

Still, I couldn't stand being abandoned by Miyu.

I mopped up the semen on my body, flushed it down the toilet, and ran to the washroom.

Miyu is cleaning in the bathroom naked.

"Miyu!!"

When I called out to her, Miyu turned to me without stopping her scrubbing with the sponge stick.

"Did something happen?"

Miyu tilts her head slightly.

Same as always.

Her face was simply adorable.

It feels just like the usual atmosphere.

Maybe it's just that she's gotten past her anger or something.

"No, about, that. I'm just a helpless older brother. I don't really want to cause trouble for Miyu, erm, so I just want one more chance, or something like that..."

I can't form words.

I don't know how to convince someone who had abandoned me to have hope for me again.

"One more... chance? Do you mean you want me to help you cum again?"

Miyu replied with a blank look on her face as she gazed at my lower abdomen.

"N, no!! That's not it! I'd be happy if you could do it again in the future... or not! No, I'm not happy at all! I'm happy about it but, you know, that's why...!"

Do I even understand that I'm being misled.

It doesn't feel that way though.

That sigh of resignation.

I can only think of it as if I'd been abandoned.

However, I couldn't express it honestly in words.

While I was confused, Miyu finished cleaning and came out of the bathroom.

"You seem to be in a bit of a panic. I'm not really angry, you know?"

Miyu sensed my thoughts and gave me her answer first.

I know you're not mad at me right now.

The question is whether things have returned to normal, or whether she has become so stunned that she no longer feels anything.

"I mean, come on. When you left, you were saying that's enough..."

I'm afraid of becoming emotionally distant from Miyu.

It was the first time I had such feelings in my life.

I had the fear of being abandoned when I caused a problem in the fitting room before.

At that time, she was clearly angry with me.

Miyu being this composed is rather scary.

"When I say it's enough, that’s not what I mean…"

Miyu stammers as if it is difficult to answer.

"I can't forgive you for soiling my clothes, though, right? I've already punished you for that. Well, there's nothing I can do about your stubborn hardness anyways."

Miyu looks down at the helpless part of me.

Maybe it was because Miyu's naked body was in my field of vision, but even in this situation, my erection still wouldn't subside.

I wonder if Miyu is really accepting of me, knowing that I am so unbearable.

"Is it that hard to believe?"

I didn't know what kind of questions to ask to find out her true intentions, so Miyu approached me while I remained silent.

Miyu looks into my face, leaving a gap exactly the length of my erect penis between the completely naked Miyu and me, who was naked from the waist down.

"Shall we take a bath together?"

Miyu asked me, and my head went completely flat.

I was worried that Miyu had abandoned me, but on the contrary, Miyu has forgiven me more than ever before.

"If I say that I'm going in with you, is that a game over?"

"No. If you can trust in me with that, I'll go in with you, Onii-chan."

I, a high school student, take a bath with my sister, who is two years younger than me.

Of course, that's something you can't do unless you're on good terms.

"...Then, I'm going in."

"Yeah. Got it."

My answer, 'I'm going in,' was accepted without a hitch, even though I was feeling chilled in my heart.

Miyu turns off the hot water in the bath and prepares bath towels for two people.

"I'm taking a shower first. You can come in whenever you like."

With that, Miyu closed the bathroom door.

I don't get it.

I can't believe my reputation is going up because I made a mistake.

How should I sort out this situation?

Miyu was certainly angry.

But it's only because I got her clothes dirty.

I received that much punishment, but Miyu gave up on me because it still didn't get her angry.

After that, I waited for my little sister, who was gentler than ever.

I had no idea what she was thinking.

After coming this far, I have no clue what's going to happen from here.

I have no choice but to jump in.

In order to understand Miyu.

I have no choice but for us to take everything off and talk naked, huh.

"...I'm coming in."

I undressed and opened the bathroom door.

The shower was off and Miyu was sitting on the bathtub lid washing her hair.

"You can use the shower. I'll wash my hair when I'm done, so let's take turns using it."

"O-okay."

While Miyu was washing her hair, I drenched myself in the shower.

As I start shampooing, Miyu washes her head and starts washing her body.

Miyu's breasts, which were too big to be hidden by the bubbles, swayed as the body soap slipped.

The pain in my groin never went away, and when Miyu finally finished washing me and could see me washing my body, I felt the most embarrassed.

Then I enter the bathtub first, and Miyu sits on the empty space in front of me.

Miyu's hair was tied up with a hair clip, and the fineness of her skin stood out when looking at her back and neck up close.

I can't believe the day came when I take a bath with Miyu.

I don't remember it clearly, but I don't think we ever took a bath together like this, even when we were kids.

"Did you trust me a little?"

Miyu asked, turning only half of her head towards me.

It would be rude not to believe her after going this far.

"Well, I'm sorry about that."

I think anyone would feel uneasy if they were treated like that.

No one feels good when they're suspected.

Let's believe her.

If I was indeed abandoned, there would have absolutely not been a way for me to come back.

"Fuuh."

Miyu hugs her knees and looks at her face reflected in the water.

Miyu's expression was calm as she took a breather.

The hot water, which had increased to accommodate for two people, rose up to her shoulders.

Usually I just take a shower, but in the summer my body gets colder from sweat and air conditioning.

It might be a good idea to take a slow bath like this once in a while.

The moment I entered the hot water, the pain in my glans was unusual, but it subsided after a while.

"Ignoring all of that. You came a lot, didn't you."

"Oh, ri, right, about that."

Was it an attempt to lighten the mood?

There was probably a million other things to talk about though.

"Even though it was in the heat of the moment, I did it with my hands."

"Ahh. You did that, didn't you?"

"Did it feel good?"

"Well, for that much to come out, yeah."

It was a hell of pleasure that made my head go crazy.

I'd like to ask her to spare me from that previous torture, but if she allows it, I'd like her to use her hands again.

"I won't do it anymore, just saying."

"Eh..."

She's practically reading through my brain.

It's a shame, but I have a girlfriend too.

That's right.

It was some kind of accident.

Rather, it was nothing but an accident.

Therefore, it is also an accident that I am taking a bath with her like this.

Moreover, the other party is my blood-related little sister, so there's no problem.

So, even if I wanted to grab Miyu's breasts that were visible from behind and play with them, that would be an accident.

"Um, Miyu. It's hitting your back, is that okay?"

My rigidity clung perfectly to Miyu's back.

There was not much room in the bathtub, but Miyu did not care about it and leaned her back.

"Yeah. It's fine. Just for today."

Miyu shouldn't like skinship.

I wonder what kind of change of mood she had.

"Then, by the way, I'd like to ask you something."

"Yeah."

"Is rubbing your boobs-"

"That's a no."

I-isn't that so.

I understood.

I understood, you know.

Miyu especially hates having her boobs touched.

"Onii-chan."

Miyu rests her weight on my back.

Miyu lifted her chin a little, allowing me to see the side of her face.

"Your pulse is amazing."

When it was pointed out to me and I realised that it was due to the erection of my cock, I suddenly felt a surge of shame and my whole body became hot.

"I-I'm sorry! Um, so this is..."

I was overwhelmed by the desire to touch Miyu's boobs.

With our bodies so close to each other, my mental state was completely obvious.

"It's been stiff since you were in the toilet."

"Yeah... I guess, so..."

I have no way to apologise.

I shouldn't have enough semen left to ejaculate.

So why is it so hard.

"Is it always this energetic?"

"No, this is-"

To be honest, I think it's better if I just spoke my heart out.

"Only when I'm with Miyu, I guess."

I have a lot of sexual desire.

However, the only time it stays hard right after ejaculating is when Miyu is stimulating it.

"Hey, can I ask you a more in-depth question?"

"...Wha, what is it."

Miyu blinked her eyes, looked away, and thought for a moment.

It's a usual habit of hers, but I don't know what the meaning behind it is.

There was a pause of a few seconds, and I wondered what she was going to ask me, causing my heartbeat to become stronger.

"Onii-chan, do you want to make me pregnant?"

Naturally, I responded to that overly intrusive question,

"Y-you're wrong! I never thought of something like that!"

I immediately denied it.

I don't have the ability to take on that kind of responsibility yet, and I never aspired to.

But that much ejaculate.

I don't know what my body thinks.

Furthermore.

What if Miyu asked me if I could have sex with her?

I'm sure that I will follow my desires and lay my hands on my little sister.

"Hmm. Well, it doesn't matter."

Miyu faced forward again and hugged her knees.

Either way, why did she ask?

I don't know, but I wonder what it is.

This feeling.

The way Miyu looks from behind is also very beautiful.

I have thought of girls as cute many times, but I have never thought of them as so cute it came from the bottom of my heart.

Cute.

Miyu is cuter than anyone else in the world.

Being with Miyu calms me down.

My heart beats faster when our skin touches each other.

Until now, I thought I was just aroused by the unfamiliar female body.

──No, wait, that's bad.

I shouldn't think about this any further.

We're brothers and sisters.

It can never be more than that.

"Your heart rate's too high."

"Ah, ahh-"

"Does seeing your cute little sister naked turn you on that much?"

"Please stop."

I can't deny it.

"...It looks like Onii-chan is really going to die soon, so I'll get up first."

Miyu stepped over the bathtub and took a quick shower before heading out to the changing room.

Ah, yeah, this is some kind of mistake.

I've never had any feelings of love for my little sister.

"I'll make food while you're changing. Come eat, okay."

Miyu popped out her towel-wrapped head and said that one last time before heading upstairs.

She's helplessly cute.

No matter how hard I try, I still think like this, and I need to correct this mentality now.

If I paid more attention to my little sister, I would become irreparable.