Kim Sun-ho’s Relationship Arrangement (7)

[That day, I heard a sexual story from someone for the first time.

It wasn’t sex education, but literally sex. Not some boring story about what a man’s penis is like or what a woman’s vagina is like.

It was literally a sexual story. Full of stories that just hearing them made me horny.

Especially the part about sitting at a desk studying, and taking off a layer of clothing for every problem I got wrong, that turned me on.]

‘This, that…’

Like a fuse being lit, it all started to come back to me.

–

“Study, do some studying! Are you so bad at it that I have to teach you?”

A girl with glasses, sitting drab at a desk, and Sunho are sitting together.

Different from now, but the girl was Hyunji. The only difference from now is whether she wears glasses or not.

Already with an annoyed expression, she was teaching the problem on the desk.

Back then, Sunho didn’t know that Hyunji was ‘not doing’ her studies because she lacked motivation.

Hyunji isn’t stupid; if you only consider intelligence and knowledge, she was far superior to Sunho.

But that one problem called sexual desire was holding her back.

For a guy, it would be simple to shake it lightly, get one off, and start, but not Hyunji.

She had a belief that masturbation wasn’t good, even at home, and because she had that belief, she was unconsciously suppressing it.

If she could just use her fingers and touch it a few times, she would ejaculate white fluid and study refreshed.

Because she couldn’t do that, her older brother Sunho was looking at her with a very displeased expression.

“Hoo… No, what’s the problem? I’ve told you everything I can.”

“…I know. It definitely goes into my head, but my hands won’t follow.”

“No, how can I explain it any more than this? I’m only human! I can’t explain it any more than this!”

“Sorry, something… just won’t follow.”

“Why, are you tired? Or should there be some stimulating penalty to make you nervous?”

Rage was bound to build up.

She had gotten the problem he had explained for two hours wrong again, so anyone who wasn’t a saint would get angry.

Not just once, but the problem he had explained for two hours.

She missed the problem consecutively, so he threw down the pen he was holding and grabbed his head.

“There’s no choice.”

“Huh?”

“Every time you get a problem I taught you wrong, take off one piece of clothing.”

“…Huh??”

“If we do this, you’ll be nervous and won’t get it wrong, right? Let’s start the next page.”

Turning to the next page of the problem set, Sunho glared.

He didn’t really have any intention of making her take it off. It was just to make her get the problems right.

But even if he didn’t have the intention, he was planning to make her take it off if she got it wrong.

If he just said it, she would clearly ignore him. It’s meaningless.

It’s worse to do a meaningless action than to not say anything.

He would back down if she strongly refused, but if not, he was thinking of going through with it.

Hyunji didn’t think much of it and solved the problems as usual.

She just couldn’t solve them well because she had the shackle of sexual desire, but she wasn’t stupid.

The problem was that one shackle was working too strongly, so she got it wrong again.

In 20 minutes, 19 out of 20 problems were correct.

The last problem Sunho taught her was wrong again, causing Sunho’s annoyance.

“Hey, you… This again…”

He put his hand on his forehead and just stared blankly at the problem set.

Why, why the hell? He muttered, with an expression full of anger.

Why was she getting wrong what he could solve well enough and had explained thoroughly?

If he knew about the problem of sexual desire, he could understand, but of course he didn’t, so Sunho threw the problem set away.

“…Hey, take it off.”

“Really take it off?”

“Take it off. Take off one shirt and let’s solve the next page again. Honestly, I’ve been teaching you for 2 hours. It’ll be the same even if I teach you more.”

It was different from Sunho’s thought that he would end today’s class, thinking that she would refuse.

Hyunji hesitated but took off one shirt.

Of course, there was a plain white bra under the shirt, and it came into Sunho’s eyes as it was.

He didn’t react even though he saw underwear so small that it was almost embarrassing to call it a chest.

However, one question arose in his head.

Why is she following these words?

It was primal.

What’s the reason for following when she could just say “I don’t want to!” and lie down on the bed and endure it?

The only simple conclusion is that she wants to follow.

She’s not following because she’s afraid he’ll use violence, since he’s not someone who uses violence, so the reasoning was too lacking.

Conversely, Hyunji also felt embarrassed after following.

The thought that she would concentrate because she would be embarrassed if she did this without thinking was different from reality.

She doesn’t show it on the outside, but her body twitches slightly from the inside, and embarrassment begins to cover her whole body.

But she didn’t want to abandon this feeling, even if she said she would put it back on.

This subtle feeling that makes her feel good. She, who has never masturbated, has no way of knowing that it is pleasure.

Pleasure definitely covers and gnaws at Hyunji’s body.

Her normal body starts to sweat drop by drop from her forehead and flows down her body.

Her face gradually turns red, and her body protests to release the pleasure of sexual desire.

“Okay, let’s solve it again… Are you sick somewhere?”

Putting the problem set back up and looking at Hyunji, she was already dyed red in his eyes.

The way she was sweating and grabbing the pen with slightly trembling hands definitely looked like she was in pain.

She couldn’t explain the feeling of throbbing inside her body and the inside of her vagina ringing, so all she could do was grab the pen and tremble.

“N-no, I’m not sick.”

Even when Sunho puts his hand on her forehead, she has no fever compared to her flushed face.

He can’t understand why her face is red, with a body temperature no different from his own.

Hyunji was also burning inside.

She doesn’t know how to solve this unknown feeling, and her body and vagina are throbbing.

Even if she wants to solve it, she doesn’t know anyone to ask for help or tell her.

Even though she feels like she’ll feel better if she touches it, she can’t do it with that one perception that it’s bad.

“You don’t have a fever either… If you’re sick, just lie down. Get some rest and we’ll do it later.”

“C-can I really?”

“You can get a headache, I’m sorry. I need to teach you better.”

“No, then I’ll just… lie down…”

She gets up from the chair and entrusts her body to the soft bed.

The coldness of the cold bed sheets cools her body, but it doesn’t cool the heat inside her body.

Inside Hyunji’s body, there was still a throbbing vagina and a pounding heart that was emitting heat.

Even though the outside was cool, the inside wasn’t, so she gasped without realizing it.

A moaning sound like “haa” that seemed to come from a porn video echoed through the room.

“You’re really not sick, are you?”

Sunho, who was tapping on his phone thinking it was a short break, turned his gaze to the bed at the moaning sound.

It’s natural to worry when her face is red and her breathing fills the room.

Even when he approached the bed and looked at her, she didn’t look like she was in pain.

If a red face and just breathing out is a sign of pain, then a large portion of the world is in pain.

“Why is she doing this…”

“T-that, Oppa…”

“Hey, if you’re sick somewhere, tell me. I’ll tell them and we’ll go to the hospital.”

“No, I’m not sick… Ah, yeah, I’m sick… I’m sick here…”

The place her hand arrived at was her lower abdomen, and Sunho thought it was really her stomach, as usual.

He was naturally thinking that her stomach must be hurting and was wondering if he should go to the hospital, when Hyunji opened her mouth again.

“H-here, it’s throbbing.”

A little further down her lower abdomen, after seeing her hand lower than her belly button, he realized it wasn’t her stomach.

Even if you just look roughly, it’s the location of a woman’s uterus, where the womb is.

No matter how he looked at it, it didn’t feel like her stomach was hurting.

Panting breath and flushed face, and the location her hand was pointing to.

“You’re not horny right now, are you?”

“I, I think so.”

“…Go get one off in the bathroom and come back.”

“……”

At the words “get one off,” she covered her face with a pillow.

“I don’t know what ‘get one off’ means…”

“……Don’t you know masturbation? Go do it and come back, I’ll wait for you.”

“I’ve never done it…”

“What?”

She’s a high school student.

If she’s a guy, she’s at an age where she can do it all day and still want to do it again.

It depends on the person even for a woman, but she’s old enough to do it.

There’s no way she wouldn’t know. Usually, if she wants to do it, she’ll find it herself.

Either she’ll find it or instinctively rub her vagina and comfort herself.

Sunho himself learned this on his own, but Hyunji, who is younger than him, doesn’t know?

Why? No matter how strict his cousins seem, are they preventing even this?

It was an absolute wall that Sunho, who grew up in a free home, couldn’t understand.

“Hey, so right now… Ha, your lower abdomen is throbbing?”

“Uung…”

“You think it’ll be relieved if you masturbate, but you don’t know how?”

“…I think… so…”

“Then what do you want me to do here? Should I just stop studying today and go home? Take care of yourself.”

Sunho moves without delay.

He judged that it would be better to just go home and rest than to get involved in something troublesome.

To masturbate his younger sister in a house where adults are present?

If he gets caught, can he get away with just getting his head cracked?

It’s a situation where he should bow down and thank them if only his head gets cracked, so it’s right to back out.

“J-just a minute…”

Hyunji gasped and grabbed his pants.

Her appearance, panting and sweating with a bright red face, changed Sunho’s thoughts, who thought it was really annoying, even a little.

With just that one feeling of being turned on.

His footsteps, which were about to shake her off and leave, stopped for a moment, and in that gap, Hyunji added words and grabbed his ankle.

“C-can’t you do it for me, Oppa…? I’ve never done it before, so I really don’t know…”

If he had shaken her off and left at this time, Sunho two years later might not have existed.

He could have lived as an ordinary older brother and an ordinary man, let alone with his younger sister.

But he didn’t make that choice.

It was an irresistible choice for him, who was seeing a woman panting and flushed for the first time.

The sight of her begging him while only wearing a bra is a sight that all men would momentarily succumb to sexual desire and fall for.

He could somehow endure and get through it, but Sunho couldn’t.

He succumbed to that temptation, shook off her hand, carefully locked the door, and approached Hyunji.

Even though he thinks it’s something he shouldn’t do, his hand moves.

He started touching Hyunji’s body, who was lying down and panting, and whispered.

“Then I’ll do as I please? I’ll be fucked if I get caught too.”

“Okay…”

He slowly started taking off Hyunji’s pants.