Experiments and Egg-Laying

Three days had passed since I urinated on the Peach Butt. Ever since then, Kurihara-san had been coming to my room every day, earnestly reading the dirty book.

I had assumed she would finish reading it in about two hours. It actually took nearly four hours, but she did manage to finish.

And now, she was on her third read-through.

According to Kurihara-san, by the time she finishes reading, she forgets everything from the beginning. So when she rereads it, it's like starting fresh.

Infinite loops are scary, aren't they?

Well, Kurihara-san stays quiet when she's reading, so it works out for me. And since she said she would follow any order, I decided to conduct various experiments.

First, I wanted to confirm what happens to Kurihara-san's hole when I put something inside the Peach Butt's hole.

Sitting at my desk, I quietly unzipped my pants without Kurihara-san noticing and took out my penis. Then I thrust it into the Peach Butt's hole.

"Ngh!?"

My penis plunged deep inside with a squelch. Kurihara-san's body jolted and trembled. I pushed it all the way to the base.

Then I tucked both my penis and the Peach Butt back into my pants.

It made things a bit bulgy, but knowing Kurihara-san, she probably wouldn't notice.

I swiveled my chair around to face Kurihara-san and crossed my legs to hide the bulge in my crotch.

"Hey, Kurihara-san, how's the dirty book? Does it excite you?"

When I spoke to her, Kurihara-san, who had been opening and closing her mouth like a fish and trembling, suddenly snapped back to her senses and wiped her mouth with her sleeve.

She had been drooling because it felt so good, apparently.

"I-I'm excited! I feel really aroused!"

Kurihara-san answered without a hint of shame. Somehow, that killed any sensuality.

She would hide going to the bathroom, yet she'd openly admit something like this. I don't understand.

"You know how girls get wet when they're excited? I want to see that, so take off your panties and show me your butt. Make sure I can see clearly."

"Huh!?"

Kurihara-san was visibly flustered. If I told her to show me, she would show me. If I told her to strip, she would strip. But right now, her eyes were darting around nervously.

Just as I thought. Something was off with her backside. She didn't want me to see it.

"It's an order. If you don't want to show me, could you go home? A Kurihara-san who doesn't follow orders is like drawing legs on a snake. You know what that means? It's superfluous. In other words, there's no point in you being here."

It came out a bit harsh, but I wanted to avoid going in circles.

"O-okay. B-but, right now, um, my butt is kind of strange…"

Kurihara-san placed the book she was holding on the floor, stood up, and slipped both hands under her skirt. Then she pulled down her panties.

"H-how do I make it easy to see?"

Having removed her panties, Kurihara-san asked me while intertwining her fingers in front of her chest and averting her gaze.

Her ears were bright red. She was clearly extremely embarrassed.

"There were examples in that dirty book, right? Figure it out yourself. Otherwise, what's the point of coming here every day to read it? If you still can't figure it out, then don't bother coming anymore."

Kurihara-san's gaze snapped toward me with a panicked look, her eyes darting and her lips trembling.

She looked like she was about to cry.

"I-I'm sorry. I'm just… not very smart…"

With her blue eyes brimming with tears, Kurihara-san turned away from me. She spread her feet shoulder-width apart and bent over.

"M-my butt is strange. I'm sorry…"

Saying that while bent over, she reached both hands behind her and lifted up her skirt. Then she grabbed her buttocks with both hands and spread them apart.

Her smooth, precious place was spread wide open for display.

Kurihara-san's body was trembling—from embarrassment, presumably—yet a large amount of transparent fluid was overflowing from her precious place.

Despite being so embarrassed, her body seemed to be enjoying it.

"See, you can do it if you try. I've gained some respect for you."

At my words, Kurihara-san's trembling body suddenly went still.

"Y-you respect me…? Th-thank you! Ehehe, I'll do my best!"

The praise put her in a good mood, and she responded cheerfully.

Honestly, I couldn't tell if she was simple or complicated.

I stood up and approached Kurihara-san's behind, then crouched down to get a close look at her hole.

"Ah, um—ah, don't look so much…"

"Be quiet. You're distracting me."

"S-sorry…"

Still bent over with her rear stuck out, Kurihara-san must have felt my gaze on her fully exposed behind. Her white skin flushed pink as she squirmed.

But my scolding had silenced her. Instead, sweat was beading on her skin.

"This is… incredible."

"Uu…"

Despite her embarrassment at having her hole stared at so intently, she spread her buttocks wider with her hands to give me a better view.

And the hole before me was gaping open, regardless of her hands spreading it.

I could see right inside. But nothing was there.

"Stay still. Don't move."

"Y-yes…"

I called out to Kurihara-san, then reached my right hand toward my crotch and slipped it into my pants. Grabbing the Peach Butt fitted around my penis, I slowly pulled it off.

"Ugh, kuu…"

As my penis slipped out with a squelch, Kurihara-san's behind jolted, and she let out a strained, sweet moan as if holding something back.

"This is surprising…"

"Uu…"

A bizarre phenomenon unfolded before my eyes. When I pulled my penis out of the Peach Butt, the hole began to close.

"Ahih!"

And when I thrust back in, the closed hole opened again.

"Nah, nhih, hauu…"

As I pumped my penis in and out of the Peach Butt's hole with wet sounds, Kurihara-san's hole opened and closed in sync.

I tried sticking a finger into Kurihara-san's hole.

It was completely hollow. There was a penis-shaped opening, but no penis inside.

"Ihih!"

When I traced the walls of the hole with my finger to confirm, I definitely felt something soft and fleshy. But no penis.

What was going on here? Urine and the pen cap had transferred over, but my penis hadn't. Well, it was spreading the hole open, so something was transferring. But I couldn't see or touch it.

Maybe…

I returned to my desk, pulled my penis out of the Peach Butt, and spread the hole open with my fingers. Then I inserted a pen cap into the hole.

The pen cap vanished. I hurried back to Kurihara-san's behind and crouched down to stare at her hole.

"Just as I thought."

"Ah, au… there's something cold and hard inside…"

Kurihara-san's hole was spread open in the same shape as my fingers spreading the Peach Butt. And inside her hole was the pen cap I had put into the Peach Butt.

I carefully inserted my finger and pulled out the cap.

"U, uu…"

The cap came out covered in slippery fluid. It was definitely the same cap I had put in the Peach Butt.

I see. Objects that go completely inside the Peach Butt's hole transfer completely into Kurihara-san's hole. But objects that stick out of the Peach Butt's hole still transfer, yet somehow don't exist. No—they exist, but can't be seen or touched.

This was incredible. It shouldn't be possible by common sense, but it was happening right before my eyes. I had no choice but to believe it.

Even if I couldn't understand it, it was undeniable fact.

That raised another question.

I returned to the desk and took out some string from the drawer. I tied the string to the pen cap and pushed it into the Peach Butt's hole. Then I went back to Kurihara-san's behind.

When I spread the Peach Butt's hole with my fingers, Kurihara-san's hole spread too.

"Nkuu…"

But inside Kurihara-san's wide-open hole, there was nothing.

I checked the Peach Butt. The pen cap was definitely inside.

Just as I thought. With the string attached, part of it was sticking out of the Peach Butt's hole. In that case, only the shape transferred to Kurihara-san's hole. It interfered physically, but couldn't be seen or touched.

"Afu…"

I pulled the string to yank the cap out of the Peach Butt, then returned to the desk. There should be one in the desk drawer.

After rummaging through the drawer, I pulled out a ping-pong ball. I also took out a compass and poked a hole in it, threaded the string through, and secured it. Then I coated the ball with the viscous fluid dripping from the Peach Butt for lubrication.

I pressed the ping-pong ball against the Peach Butt's hole and slowly pushed it in.

"Ha… ahh… s-something big… is going iiiin…"

The ping-pong ball gradually sank in, forcing the hole to stretch. When the hole reached the ball's widest point, it was suddenly swallowed with a slurp.

Only the string dangled from the Peach Butt's now-closed hole.

As expected of a hole that had passed the thousand mark. I couldn't believe it had just swallowed a ping-pong ball.

"Aahh, there's something inside! Something went inside my butt!"

Kurihara-san's moans sounded pained yet pleasured. I returned to stand before her behind and thrust my finger into her closed hole.

"Nah!"

Kurihara-san trembled violently. And her hole was hollow inside.

Just as I thought. There was a ping-pong ball-shaped void. If I put just the ball in, the ball would transfer. But with string attached, it would physically interfere while being invisible and intangible.

Amazing. The Peach Butt was amazing. What an incredible function.

I tried pushing all the string into the Peach Butt, then thrust my finger into Kurihara-san's hole.

"Aah, afuu…"

I felt the string against my finger, and my fingertip touched something hard. The ping-pong ball that I couldn't touch before was now definitely present inside Kurihara-san's hole.

When I pulled the string out of the Peach Butt, the string and ping-pong ball instantly vanished from inside Kurihara-san's hole. But the ping-pong ball-shaped void remained.

What an incredible function. The impossible was happening right before my eyes.

Curiosity and desire to explore surged within me.

"Nhii…"

I yanked the string to pull out the ping-pong ball, then thrust three fingers into the Peach Butt's hole.

"Nah, ahih, nooo…"

I churned the hole with wet squelching sounds, increasing to four fingers. Then, gradually stretching it, I pushed my thumb in as well.

"Ngii, oooh, nooooh…"

All five fingers were being forced into the Peach Butt. Normally this would be quite extreme, but with Kurihara-san's thousand-plus Peach Butt, it might just work.

"Ooooh, nooooh, I'm gonna breaaak, my butt's gonna breaaak, ogooooh…"

Kurihara-san's body shook violently as she let out an almost bestial howl. I had been playing with her a lot, but this was the first time I had put my whole hand in. It must have been painful, given the animalistic roars she was making.

Hang in there, Kurihara-san. It's almost all the way in.

The abnormally stretched Peach Butt's hole swallowed up to the base of my thumb, then suddenly sucked in my entire hand with a wet pop.

"Ogoh!?"

It went in. My whole hand went in. For the first time, I genuinely thought Kurihara-san was amazing. Though technically, it was the Peach Butt that was amazing, not Kurihara-san herself.

With my hand inside, Kurihara-san's hole gaped open to match the width of my arm. The inside was completely visible. The inside of a hole is surprisingly grotesque, as it turns out.

Impressed, I unzipped my pants and took out my penis. Then I thrust it into Kurihara-san's hole.

I felt a foreign object touch the hand inside the Peach Butt.

Just as I thought. Kurihara-san's hole had a hand-shaped void, so my penis touched nothing. But the hand inside the Peach Butt definitely felt my penis.

In other words.

"Noh!? Ogoh!?"

"Whoa, this feels amazing!"

When I grabbed my penis with the hand inside the Peach Butt, Kurihara-san's hole morphed to the shape of my penis.

Normally you'd have to thrust your hips to feel good, but stroking my penis with the hand inside the Peach Butt meant Kurihara-san's hole was doing the stroking. In other words, I could just stand there while my penis was pumped with squelching motions.

In reality, I was just using my own hand, but since my penis was inside Kurihara-san's hole, it felt like her hole was stroking me. An incredible sensation.

"Aoh!? Aoh!?"

Kurihara-san trembled violently, making sounds like a seal. I couldn't tell if she was suffering or enjoying it, but at least I was feeling great, so it was fine.

In the end, I released inside Kurihara-san's hole three times. And Kurihara-san passed out while still standing.

That had surely put her off. I figured she wouldn't want to come to my house anymore, but I still had the Peach Butt even without Kurihara-san, so no problem.

Or so I thought, but Kurihara-san came to my house as usual the next day.

I couldn't tell if she was fragile or thick-skinned.

During class, I kept my hands busy inside my desk while Kurihara-san stared blankly into space. She wasn't paying any attention to the lesson.

Inside my desk was Kurihara-san's Peach Butt and a large number of ping-pong balls. I was pushing them into the Peach Butt one by one.

Ever since I had put my whole hand into the Peach Butt's hole, ping-pong balls went in easily.

"Aguu…"

When I shoved a ping-pong ball in, Kurihara-san made a muffled noise and jolted in her seat. The whole class turned to look at her. I kept an innocent face and continued my work.

How many had I put in? I had lost count. Oh well, I'd just put in as many as would fit.

Ping-pong balls appearing suddenly inside her hole—from Kurihara-san's perspective, this was nothing short of a paranormal phenomenon.

Even if she got scared and went to a hospital, they would never find the cause. After all, nobody would ever think they were transferring from a Peach Butt, and I was the only one who knew the Peach Butt existed.

What surprised me was that Kurihara-san wasn't particularly scared. Having had her hole played with so much, she seemed to have gotten used to the bizarre phenomena. More than fear, she seemed to have developed a dependence on whatever was giving her such pleasure.

If anything, she seemed more afraid that the paranormal experiences might stop.

By the time break started, about half the ping-pong balls in my desk were gone.

Amazing, the Peach Butt was truly amazing. No matter how much I put in, the Peach Butt itself stayed the same. Because everything went into Kurihara-san's belly.

I got up from my seat, put the remaining ping-pong balls and the Peach Butt in my pocket, and left the classroom. I headed to the back of the school building.

Bathrooms get crowded during breaks. Even the ones near the special classrooms have people in them, except after school.

The back of the school building, on the other hand, gets visitors during lunch and after school, but few people come during regular breaks. In other words, the perfect spot.

After a while, Kurihara-san came tottering over.

Her cheeks were flushed, her breathing ragged, her eyes vacant as she stared into space. And her right hand was pressed against her stomach.

When she walked up to stand in front of me, Kurihara-san started stripping without being told.

It was something from the dirty book I had lent her. Filling one's hole with ping-pong balls and then laying them like eggs.

Kurihara-san had finally memorized the contents of the book and could now act on her own without being told.

She folded her clothes, placed them on the ground, then removed her underwear and set it on top of the folded clothes.

She was completely naked except for her white socks and indoor shoes. No, there were clips attached to the tips of her breasts. That was also from the dirty book.

The nipple clips weren't my order. Kurihara-san was doing that on her own. Apparently it hurt but felt good.

Now fully nude, Kurihara-san stood at attention in front of me, then turned around to show me her back. She squatted down, placed both hands on the ground, and raised her rear.

She looked like a frog with only its rear raised.

I squatted down to watch Kurihara-san's hole. Despite all the use, it was a pretty pink hole.

"Nuu, nuuuu, fuuuuu…"

Kurihara-san tensed her whole body and started straining. Her hole began twitching.

"Ooh, amazing, amazing."

Then her hole popped open, and something white started peeking out. Of course, it was the ping-pong ball I had inserted using the Peach Butt during class.

Slowly forcing the hole wider, the white ping-pong ball gradually emerged in full, then slipped out with a slurp.

The ping-pong ball fell to the ground trailing strings of fluid and rolled away. It was like watching sea turtles lay eggs on TV.

"Haah, haah—nuuuu, fuuuuu…"

Sweating all over, her skin flushed pink, Kurihara-san wasted no time moving on to her next delivery.

We didn't have much time before break ended, after all.

Forcing her hole wider, the second ping-pong ball emerged more smoothly than the first.

It fell to the ground trailing strings of fluid. Kurihara-san, breathing heavily, was about to start on the next one when her rear suddenly jolted.

"Agah!? Higii!?"

She let out a moan that sounded both pained and pleased.

I was the cause. I was pushing ping-pong balls from my desk into the Peach Butt. Meaning new ping-pong balls were appearing inside Kurihara-san's hole while she was trying to push them out.

No matter how many eggs she laid, it would never end. Infinite loops are scary, aren't they?

Perhaps because her frustration was being released, Kurihara-san's behavior started showing signs of calming down.

During class she would suddenly moan, or start shaking, or sweat profusely, or wet herself—Kurihara-san herself was going through quite a lot.

But the behavior of constantly hovering around me and following me everywhere had settled down.

Thanks to that, while Kurihara-san's reputation plummeted, I stopped being the center of attention.

I felt a little sorry for Kurihara-san with her ruined reputation, but the experiments were just too fun to stop.

Besides, she seemed to be enjoying it herself, so maybe I was doing something good.

According to Kurihara-san, the superficial friends who had been clinging to her had drifted away, and she had made a few real friends who genuinely worried about her.

She said that people who help you when you're in trouble are real friends.

But since she wasn't actually troubled at all, she felt a bit guilty about it, apparently.

I wanted to make up with Tamotsu-kun too, but that was proving difficult. Wasn't there some good way?

When school ended, I packed up and left the classroom. As I walked along the route home, Kurihara-san joined me at some point. This had become a daily routine.

I had thought she was a hopeless case, but maybe she could accomplish things if she tried.

Arriving home and stepping into the entryway, I saw unfamiliar shoes. Women's shoes.

"Oh? Those are Mom's shoes."

Kurihara-san, who had followed me in, stood beside me and muttered.

Solange-san's shoes? Did that mean Solange-san was here at my house?

Come to think of it, I had been neglecting Solange-san's Peach Butt lately. I always carried the flower shop lady's Peach Butt and Kurihara-san's Peach Butt with me. I was using Kurihara-san's Peach Butt; the flower shop lady's Peach Butt just stayed nearby.

The flower shop lady's Peach Butt would tremble and nuzzle up to me whenever it felt lonely. It really was the cutest.

Anyway, Solange-san's Peach Butt wasn't very pleasurable because it was so loose. And even though I had been neglecting it, it had somehow broken through the thousand mark on its own, becoming even looser.

To put it bluntly, it was gaping.

Meanwhile, Kurihara-san's Peach Butt, also past the thousand mark, was very flexible yet had good tightness and felt great.

When I went to the living room, Mom and Solange-san were chatting with smiles.

Kurihara-san had been coming to my house so often lately that Solange-san had apparently come to say hello and thank us.

Seeing young, beautiful, busty Solange-san sitting across from my mom made the difference painfully obvious.

Mom, you usually never wear makeup at home, but today you've gone all out. But don't overdo it. You can't win what you can't win.

I finished the brief greetings and said we would be studying, then went upstairs with Kurihara-san.

I was supposed to enjoy my usual experiments with the Peach Butt and Kurihara-san.

"You could come over to my house sometimes too, you know?"

But Solange-san was here, sitting next to Kurihara-san.

Shortly after we had gone upstairs, for some reason Solange-san had come into my room.

"I don't have any friends, you see. So when Kozue isn't home, I'm all alone."

Solange-san said this with a lonely smile. Next to her, Kurihara-san was pouting.

Having no friends—a certain someone had said the same thing. But that certain someone had apparently made friends recently. Looks like she lost.

"Kozue is always attached to Akiharu-kun, and it would be rude for me to keep coming over here, so… right? I was thinking you could study at my house. How about alternating between our houses?"

Solange-san pressed her palms together in front of her chest, her blue eyes sparkling as she made the suggestion. Beautiful and busty, yet such a lonely adult.

"Does Kurihara-san's father come home late?"

Sitting in my chair, I asked Solange-san while secretly stuffing ping-pong balls into Kurihara-san's Peach Butt without either of them noticing.

As the ping-pong balls squelched in one after another, Kurihara-san's cheeks flushed and her breathing grew ragged. The pleasure seemed to have made her forget her pouting.

"My husband travels a lot for work. Even when he comes back, it's only once a week, and sometimes he's away for a whole month."

Solange-san sighed, resting her cheek in her hand.

I see. That's why her Peach Butt broke through the thousand mark on its own.

"All right. I'll come visit sometime then."

"Sometime? Can't you come tomorrow? I'll prepare delicious snacks, please?"

She must have been desperately lonely, because Solange-san pressed further. Clinging to her daughter's acquaintance—she really didn't have any friends, did she?

And yet, didn't she have any pride as an adult?

"My mom's actually pretty bored too. Why not become friends with her?"

"Uh… th-that's…"

Solange-san looked down and started fidgeting, her fingers intertwined in front of her chest, no longer pressed together. Then she looked up at me.

"W-with someone older, I get nervous… With you, Akiharu-kun, I have the higher position, so I can act all bossy, and it's easy…"

"That's very honest."

"Mm."

Like a certain someone, Solange-san gave me a very honest answer. I appreciated the transparency, but she might want to keep such things to herself.

Oh well. Being told that openly, I felt no guilt about coming over to play.

"All right. I'll come to Kurihara-san's house tomorrow then."

When I gave that answer, Solange-san beamed and said, "I have to prepare delicious snacks and food!" as she stood up and rushed out of the room.

"Kurihara-san's mother is beautiful but kind of pitiful, isn't she?"

I said to Kurihara-san while pushing a ping-pong ball into the Peach Butt.

"Auh…"

Either she hadn't heard me, or she just didn't care. She jolted, breathing heavily, staring into space, drool dripping from her slack mouth.

Yeah, they were both the same.