Rules

I thought things would become troublesome. But once I opened that lid, it wasn't so bad after all.

Kurihara-san was obedient toward me and would honestly do anything I told her.

When I told her to pee on the roadside on our way home from school, she turned bright red and acted fidgety, but she really did pull down her underwear right there and pee.

Public urination is a crime. I never thought she'd actually do it, and I was more flustered than her. But when I calmed down and thought about it, Kurihara-san had been squatting while peeing.

It was sitting-style, so it should be fine. Yeah.

On top of that, when I told her to strip naked in the PE storage room during gym class, she really did strip naked. And then she tried to pee on her own, so I hurried to stop her.

If she peed in the PE storage room, the teacher would get angry. More importantly, the PE storage room would stink of pee.

I scolded Kurihara-san a bit for acting on her own without orders. She cried and begged for forgiveness. According to her, she thought I'd start to dislike her if she didn't read my mind and act accordingly.

She hadn't read me at all. She was completely off the mark.

At any rate, it seemed true that she'd follow any order I gave. But having her try to anticipate my wishes and take bizarre actions on her own was troubling. It was worse because she meant no harm.

So I decided to make rules.

One: Don't try to anticipate my orders—follow them exactly as given.

Two: Don't talk to me at school.

I ordered her to follow these two rules without fail.

And Kurihara-san properly obeyed my orders.

 

 

A week passed since I made the rules. Kurihara-san was more or less following them.

I say "more or less" because rather than breaking them outright, she seemed to be exploiting loopholes.

Given how good she was at probing butt holes, I suppose she was skilled at finding holes in general.

Whenever class ended, Kurihara-san would get up from her seat and wander around mine. She'd stop every now and then, stealing glances at me.

She certainly wasn't talking to me. But this made the rule about not talking to me meaningless.

The girls in class were starting to question Kurihara-san's inexplicable behavior.

Kurihara-san probably didn't mean any harm. She likely thought it was fine as long as she wasn't technically talking to me. But this was more suspicious than if we'd just had normal conversations.

Come to think of it, I hadn't known about Kurihara-san's grades before, but apparently she wasn't that smart. She was bad at sports too. In other words, all looks.

Because Kurihara-san hovered around me during every break, I couldn't play with the peachy bottom anymore. Which meant Kurihara-san was getting frustrated.

That said, I couldn't play with Kurihara-san's peachy bottom during class either. If I did, Kurihara-san would end up having to go to the nurse's office again.

Whenever I tried going to the bathroom, Kurihara-san would follow me, making it look like we were heading there together like close friends.

So except for times when I really needed to go, I couldn't play with the peachy bottom in the bathroom either.

In other words, Kurihara-san's frustration kept accelerating.

"W-why? Why are you trying to avoid me?"

On the way home from school, Kurihara-san was following behind me as usual, asking with a sad face.

Was this girl serious? Did she really not realize her own actions were strangling her?

She acted so thoughtlessly that I'd started wondering if she was doing it on purpose. But if she was serious, I had no words.

"Y-you said, you said you'd do ecchi things with me once we left school, right? Katou-kun, you said that, right?"

Kurihara-san, who had been trudging along, quickened her pace to walk beside me. Her blue eyes sparkled with anticipation.

I did say that, but I was tired and not in the mood. Kurihara-san had mentally exhausted me.

I had to do something. I needed to refine the rules further. This girl probably couldn't function unless I spelled out every single thing from A to Z.

"I'm going home today. Kurihara-san is annoying and it's tiring."

"I-I'm sorry! I-I didn't mean any harm! I'm not very smart, so just tell me anything! I'll do anything! Should I pee on the roadside again?"

Panicking at being pushed away, Kurihara-san put both hands under her skirt right there and lowered her underwear.

Startled, I looked around. Several old men walking by were watching Kurihara-san with gleaming eyes. Some older women passed by too, but they didn't seem to notice.

"Didn't I tell you not to do things on your own? I was just curious about where girls pee from—it's not like I particularly enjoy watching it. So put your underwear back on."

"I-I'm sorry!"

Kurihara-san nodded rapidly at my words and pulled up the underwear she'd lowered to her knees, then stood at attention watching me with a forced smile.

The passing old men glared at me and clicked their tongues.

"So, what do you want? What should I do so you'll obediently go home?"

I let out a huge sigh while asking Kurihara-san.

"I-I'll follow your orders! S-so just order me to do whatever you want, Katou-kun! I'll do anything, so order me anything!"

Kurihara-san answered with a bright smile and clear voice. It was incredibly irritating.

I was asking what she wanted, but she just kept telling me to give her orders. From her perspective, she probably wanted to show how obedient she was, but that wasn't my concern. Since I was asking, she should just answer honestly.

The frustration of the conversation being so out of sync only added to my mental exhaustion.

Even if I told her to go home, she wouldn't. Even if I asked what she wanted, she'd just say she'd do anything. At this rate, we'd get nowhere.

"Hey, Kurihara-san."

"C-call me Kozue! You can drop the honorifics!"

When I called out to her, she said that.

I didn't want to call her Kozue. Didn't want to drop the honorifics either. If I did, she'd assume the wall between us had disappeared and start acting on her own again.

I wanted to maintain a certain distance from Kurihara-san.

"Hey, Kurihara-san."

"… Yes."

She'd asked for her first name without honorifics, but I'd used her last name with one, so Kurihara-san drooped in disappointment.

"Want to come to my house?"

"… Huh?"

When I asked the dejected, downcast Kurihara-san, she looked up and made a stupid sound.

Standing here arguing in the middle of the road was too conspicuous. Better to just take her to my house. Once I satisfied her there, she'd probably go home.

"Don't want to come? Then never—"

"I-I'll come! I'm coming!"

Kurihara-san raised her right hand energetically in response, her cheeks flushed pink with a huge smile across her face.

 

 

We arrived at my house and entered through the front door. Behind me, Kurihara-san was radiating an aura of joy from her whole body, following me with a beaming smile.

This was troubling. The girl was cute, but her natural cuteness had been suppressed by her gloominess. Now that she was walking around with that huge smile, almost everyone turned to look. In other words, she stood out tremendously.

I wondered if someone from our school saw us. That would be troublesome.

I really needed to refine the rules. At worst, I might get bullied at school.

"Mom, I brought a friend over. We're going to study together."

I walked down the hallway toward the kitchen, opened the door, and called out.

"A friend? That's unusual… wait, huh?"

Mom, who had been reading a magazine while sitting at the dining table, looked up and froze.

"B-blonde? Blue eyes? What? Isn't that Kurihara-san?"

Mom asked in a trembling voice, her smile strained.

Kurihara-san was famous, after all. She was always a topic at parent observations and such. Come to think of it, I'd never seen Solange-san at parent observations.

I had a feeling she couldn't come because she was shy around strangers.

"Huh? W-why is Akiharu bringing Kurihara-san home? Just because your grades have been good lately, you're going after the highest-level girl of all…"

I felt like she was saying something pretty rude, but whatever.

"N-nice, nice, nice, nice to meet you. I-I'm, K-K-Kurihara, Kozue. K-Katou-kun and I are, um… friends! … Yes."

Kurihara-san, fidgeting with a bright red face, introduced herself to Mom. Her voice was quiet and she was stammering—except when she said "friends," where she opened her eyes wide and emphasized it.

Mom was troublesome in her own way, but this was also becoming a hassle.

I should retreat to my room as soon as possible.

"L-let me make some tea!"

"No need. I'll bring some barley tea, so it's fine. And Kurihara-san isn't a guest. We're studying. If Mom fusses around, we won't be able to concentrate."

When I said that to Mom, who'd stood up to prepare tea, she froze mid-crouch.

"Besides, if you fuss too much, it'll make it hard for Kurihara-san to come over. If she came to study and you kept serving tea and snacks and trying to chat, she'd think going to the library was easier. So don't mind us, Mom. See you."

I delivered the finishing blow to the frozen Mom, then turned on my heel and headed down the hallway toward the stairs.

Because I'd walked off so quickly, the flustered Kurihara-san tried to chase after me but stopped herself, bowed to Mom, then ran after me and stuck close.

"Don't say unnecessary things. Don't do unnecessary things. If you can't even follow that much, I'll never invite you to my house again."

I spoke without turning around as I climbed the stairs.

"I-it's okay! Even I understand that much! S-so, if I behave properly, will you invite me over again?"

Kurihara-san replied energetically, but from her tone, she seemed more focused on whether she'd be invited back than on actually following what I'd said.

I was worried. This girl really was difficult to handle. Hopefully she wouldn't cause unnecessary problems.

 

 

We entered the room and I closed the door. Kurihara-san, who'd followed me into the room, clasped her fingers in front of her chest while looking around the room restlessly with flushed cheeks.

"It's small, but please bear with it."

I said that with a sigh and a hint of sarcasm. Kurihara-san nodded rapidly with a strained smile.

"You're right! It's really small!"

And while showing some consideration for me, she gave a completely honest answer.

Did this girl not understand lip service? Even if she thought it was small, she shouldn't say it out loud—wasn't "No, that's not true" just common courtesy?

"H-hey, Katou-kun. D-do you… have ecchi books? B-boys all have them, right?"

Kurihara-san quickly approached me and pinched the sleeve of my jacket, asking that with moist eyes.

Jumping straight to dirty topics. She was forcibly steering things in that direction. She must have been that frustrated.

Solange-san also seemed emotionally fragile but was strangely aggressive in certain ways. I had to be careful or Kurihara-san might take outrageous actions, but if I didn't satisfy her, she didn't seem like she'd ever go home.

"I have some. I'll show you."

Let's just get it done and send her home. With that thought, I took out several hidden ecchi books and handed them to Kurihara-san.

Receiving the books, Kurihara-san apparently hadn't expected me to actually take them out—she turned red to her ears and panicked. But she hugged the books she'd received tightly.

"I want to do the things drawn in these books. This is an order, understand?"

No matter how I asked what she wanted, she'd just say she'd do anything I said, so I might as well give her orders. Plus, if I had her read ecchi books and told her I wanted to do what was drawn in them, I wouldn't need to agonize over what to order.

"G-got it! W-wait a moment! I'll memorize them now!"

Nodding rapidly, Kurihara-san sat down on the spot, opened her eyes wide, and began reading the ecchi books with a bright red face.

She was reading with an incredibly serious expression. Like someone desperately memorizing things the day before a test. I didn't think those books were meant to be read with that kind of expression.

Since I had free time until Kurihara-san finished reading, I sat in my chair, faced my desk, took out the flower shop onee-san's peachy bottom, and killed time by sticking my finger in the hole.

When played with, the peachy bottom trembled happily. It desperately sucked in my finger, the inside of its hole undulating. But its skill still wasn't anywhere near enough.

Even so, the hopeless flower shop onee-san's peachy bottom was the cutest of all.

 

 

While playing with the peachy bottom, I suddenly remembered something.

The phenomenon where the liquid would disappear even when I finished inside the peachy bottom. I'd stopped thinking about it since I couldn't figure it out, but the test subject was right here in my room.

This was a good opportunity. Let's verify it.

I put away the flower shop onee-san's peachy bottom and took out Kurihara-san's peachy bottom.

The character for "thousand" (千) floating on the peachy bottom's buttock exasperated me. Since the six "hundred" (百) marks had appeared, I'd used Kurihara-san's peachy bottom less frequently, but the speed at which the "正" marks appeared had only increased. I'd left it alone and ten "百" had accumulated, breaking through to the "千" milestone on its own.

By the way, Solange-san's peachy bottom was also mass-producing "正" marks at a terrifying pace. Currently it had four "百," but at this rate it would catch up to Kurihara-san.

Definitely mother and daughter.

In contrast, the flower shop onee-san's peachy bottom didn't gain "正" marks as quickly. No, it was increasing at a decent pace, but the Kurihara mother-daughter pair's rate was just abnormal.

While thinking about that, I stuck a pen into the hole of Kurihara-san's peachy bottom.

"Nn"

I turned around at the voice behind me. Kurihara-san looked surprised, looking up from the ecchi book in her hands, muttering "Finally, after so long" with sparkling eyes.

Good—even playing with it this close, she showed no sign of noticing.

Turning back to the desk, I spread open the hole while the pen was still stuck in it.

"Ah"

I heard a voice from behind, but I ignored it.

And then—an unbelievable sight before my eyes.

I'd never put something in the peachy bottom's hole and then spread the hole open to look inside. The thought had never occurred to me.

Inside the spread-open hole, there was nothing. Just red flesh-like matter writhing around.

The pen was definitely stuck in. But past the entrance of the hole, the pen had vanished.

What on earth was going on?

Tilting my head in confusion, I squelched the pen in and out.

"Ah, ah, that feels good. But, I'd prefer something thicker."

It was noisy behind me, but I ignored it.

When I moved the pen in and out, I definitely heard wet sounds. I also felt resistance from the pen being squeezed. In other words, the pen did exist.

When I pulled it out, the pen that should have vanished was there, covered in viscous liquid.

I stuck it back in the hole, spread it open, and observed the inside.

"Aaah, don't spread it so wide, it's embarrassing."

So noisy. She was saying not to spread it so wide, but her voice was clearly enjoying it.

I wanted her to be quiet since she was distracting me, but if I carelessly told her to shut up, she might notice the peachy bottom. Leaving her alone was best.

Pulling myself together, I observed the inside of the hole.

"It feels like someone's watching! It feels like someone's staring at my embarrassing place!"

Ahh, so noisy.

Hm? Wait. Embarrassed about being watched?

The pen stuck in the hole was still vanishing past the entrance. And when I pulled it out, it returned to normal.

I'd understood they shared sensations, but could I have been wrong?

If putting something in the hole made her feel it, that I'd understand. But saying she was embarrassed about being watched—that seemed like more than just shared sensations.

Could it be that this hole was completely connected to Kurihara-san's actual butt hole? In other words, though I didn't understand the logic, they were one and the same?

The main body was Kurihara-san, and the peachy bottom was Kurihara-san's actual butt hole. I didn't understand what that meant, but I couldn't think of anything else.

Come to think of it, I'd never looked at Kurihara-san's actual butt hole while playing with the peachy bottom.

When I played with the peachy bottom, what was happening to Kurihara-san's butt hole?

As an experiment, I put the pen cap inside the hole. Naturally, the cap vanished.

"Ah, what!? There's something inside!?"

I put the pen and peachy bottom in the desk drawer and glanced behind me out of the corner of my eye.

Kurihara-san had looked away from the book and was touching her butt with wide, surprised eyes.

I'd never left anything inside the peachy bottom before. The only thing would have been the liquid when I put my thing inside and finished.

Where did that disappearing liquid go? And where was the vanished pen cap?

If my hypothesis was correct, the vanished pen cap was inside Kurihara-san's butt hole.

If this hypothesis was right, things would become extremely interesting.

But I couldn't confirm it. If I put a pen cap in the peachy bottom and then suddenly said I wanted to check her butt, even Kurihara-san would get suspicious.

And if a pen cap came out of her butt hole, that would be even more suspicious.

So I'd leave it to Kurihara-san's actions. She'd surely say she remembered something she needed to do, stand up, and rush to the bathroom.

"I-I just remembered something I need to do."

Saying that, Kurihara-san stood up and hurried out of the room.

She was amusingly predictable. But if you remember something you need to do at someone else's house, shouldn't you just go home? She should honestly just say she wanted to borrow the bathroom.

That said, this was Kurihara-san's first time at my house, so she didn't know where the bathroom was.

Well, if she checked each room one by one, she'd eventually find it, but even Kurihara-san probably wouldn't be that rude.

In other words.

"U-um… I-I don't particularly need to use the bathroom, but where is it? I-I thought I should know, just in case…"

The door opened, and Kurihara-san peeked her face in looking uncomfortable.

Right?

She could pee on the roadside, but apparently she didn't want me to know she was going to the bathroom.

Whether she was simple or complicated, I couldn't quite figure this girl out.

 

 

When I showed Kurihara-san to the bathroom, she said "So it's here, got it!" and came back to the room with me.

Then she sat on the floor and read the ecchi books. But she was fidgeting, rubbing her knees together and constantly shifting her butt.

The foreign object inside her butt hole must have been bothering her.

"Ah, I just remembered something! I'll be right back!"

After a while, Kurihara-san raised her voice unnaturally, stood up, and hurried out of the room.

She absolutely didn't want me to know she was going to the bathroom.

Why she was so stubborn about it, I couldn't understand.

After a while, I grabbed Kurihara-san's peachy bottom, stood up, left the room, and headed toward the bathroom.

 

 

Arriving at the bathroom, I pressed my ear against the door.

"What is this? There's something inside…"

Kurihara-san's anxious voice reached me.

"N-no, if I put my finger in, I'll just push it deeper… What do I do…"

She seemed to be struggling to get the foreign object out, but wasn't having any luck.

She should just bear down and push it out.

"M-maybe if I push? I have no choice but to try."

I heard rustling sounds, then sensed her sitting on the toilet. Apparently she'd figured it out.

"Nnngh, nnnnngh… N-no, it's stuck. What do I do…"

A troubled, flustered voice. I see—the pen cap's tip was pointed so it went in easily, but reversed it would catch and be hard to get out. I hadn't thought of that.

In that case, I should push it out for her. But how?

I pondered for a moment, then had an idea.

If things put in the peachy bottom moved into Kurihara-san's butt hole, I just needed to put something else in.

Not so much a thing as a liquid. Right—if I poured liquid into the peachy bottom, that liquid would transfer to inside Kurihara-san's butt hole. Then when the liquid was expelled, the cap should get washed out with it.

Having decided that, I was about to use water, but stopped.

Come to think of it, I kind of needed to pee. But Kurihara-san was in the bathroom, and going down to the first floor was a hassle. More importantly, I didn't want to interrupt my observation.

Yeah, I'd pee into the peachy bottom. If I peed inside the peachy bottom, the liquid would accumulate in Kurihara-san's belly.

The peachy bottom getting dirty would be bad, but since what would actually get dirty was inside Kurihara-san's belly, it was fine.

I unzipped my pants, pulled out my thing, and stuck it into the peachy bottom's hole.

"Hii!?"

A small scream came from the other side of the door—probably startled by suddenly having my thing put in.

But it was only about half-hard, so it didn't fit well. So I moved the peachy bottom up and down, squelching it in and out.

Ahh, Kurihara-san's peachy bottom really did feel the best.

"Aaah, no, not now. Something's going deeper, something's being pushed farther inside."

Clattering sounds came from the other side of the door, along with Kurihara-san's frightened cry.

Putting my thing in the peachy bottom meant my thing inside the hole was transferring to inside Kurihara-san's butt hole.

In other words, the pen cap inside the hole was being pushed deeper by my thing.

But I didn't feel the pen cap hitting the tip of my thing. What was going on?

"Ah, but this is amazing. It's been put in after so long. But it's scary, it keeps going deeper. But it feels good. Don't stop. Keep going."

While fearing the foreign object might be pushed in so deep she couldn't get it out, the pleasure was simultaneously overwhelming that fear—she seemed confused.

I was feeling quite good too, and the peachy bottom had evolved even further since before, so I frantically moved my thing in and out.

I guess breaking through to the "thousand" milestone wasn't just for show.

"Aaah, aaaaaaaah"

"Ugh"

The hole clenched tight, and that resistance doubled the pleasure, making my hips tremble on their own. In the midst of that mouth-watering pleasure, I released liquid into the hole.

After a moment, the strength drained from the hole. That's when the urge to pee came.

"Well then, don't mind if I do."

I put strength into my hips and, feeling somewhat guilty, urinated into the hole with a streaming sound.

"Haah, haah, huh!? What!? Something's coming in!?"

Kurihara-san, who'd been breathing heavily, cried out in surprise.

This felt quite good. The reason outdoor urination feels good is the guilt of doing something forbidden. The peachy bottom was similar, but peeing inside a hot, writhing hole had a pleasure that outdoor peeing lacked.

This could become a habit.

"N-no, it's coming out, it's going to come out."

When I finished peeing and my hips trembled, Kurihara-san—who'd been desperately holding back—seemed to have reached her limit.

She let out a pained cry, and then I heard the sound of liquid gushing out.

I couldn't confirm the cap, but there was no doubt my pee had transferred. In fact, the peachy bottom wasn't dirty at all.

This was incredible. The uses for the peachy bottom had just expanded dramatically.