Disciplining the Cheeky Masochistic Sister Who Wants to Marry Her Little Brother
My sister Sieun and I enjoyed a brief round of mesugaki verbal abuse play.
We didn’t have sex, didn’t even pull out my cock or her pussy—just mild, surface-level humiliation. At that level it was basically just a game, nothing with any deeper meaning.
But Sieun saw it completely differently.
After a single session of verbal abuse, she had already started thinking about marrying me.
“I wasn’t expecting marriage, but I’ve saved up quite a lot. With that much we could find a decent newlywed place on a lease. I’m a streamer so I don’t have a regular office job anyway, right? The location of our new home doesn’t really matter. Oh, but I’d prefer somewhere in Gyeonggi-do.”
Sieun rattled on like a machine gun, lost in her fantasy of marrying me. Listening to her, it sounded like she was already picturing grandchildren.
“How many children should we have? Personally I’d like three. It would be even better if they were cute sons like you, Doyun. Hehe. For that to happen, our Doyun will have to work very hard. Right, Doyun? You can do it, can’t you?”
Sieun stared at me with literal hearts floating in her eyes. Her gaze was sticky and heavy, packed with an almost suffocating depth of love.
She slowly approached me. Her hand settled on my thigh and began sliding inward.
Just before her fingers reached my groin, she whispered in a dazed, spellbound voice.
“Doyun… this is actually my first time dating, so I’m a little clumsy with a man’s body… Still… I’ll be as gentle as I can… so don’t worry… Oh. If you want to mess with me instead, just say the word anytime. Actually… the verbal abuse earlier… it felt really, really good…”
Sieun drew closer with a dreamy, hazy expression. Her heart was pounding so violently I could almost hear it. Her damp breath brushed against me. We were so close that the slightest movement would have brought our lips together.
She was slowly beginning to devour me.
Nope. This wasn’t going to work.
It had been the same with Chaewon, but sex was off-limits. That was something that couldn’t be laughed off as a joke. I still had zero intention of having sex with any of my family members. Groping their breasts or dishing out some verbal abuse was the perfect line. The moment sex entered the picture, things would become an absolute headache.
That was why I stopped Sieun as she leaned in for a kiss. I grabbed her cheeks with both of my small hands, holding her face in place.
When I rejected her kiss, Sieun looked up at me in utter confusion, as if asking, Why…?
Ha. That’s what I should be asking.
Did she seriously think we had become lovers?
“Sieun. I think you’re misunderstanding something, so let me be clear—I have zero intention of marrying you.”
“Huh…? B-but… we were so good together just now… You said you enjoyed it too… I like you so much, Doyun… No. I love you…! I’ve loved you for so long…!”
“Sieun, I like you too. But that’s as family, not—”
“Don’t say it!!”
“…”
Sieun suddenly shouted at the top of her lungs. She hung her head, body trembling violently.
The moment I saw that, I realized I was genuinely fucked.
Uh… this situation is spiraling in a bad direction.
I only gave her some light verbal abuse because I felt bad about ruining her stream… Why does it feel like everything’s getting so twisted?
“I… I like you, Doyun… You like me too, don’t you…? Then that’s enough, right? Doyun… let’s pretend I didn’t hear what you just said… So… let’s start properly… What you said earlier is only because you’ve never been in love. You definitely love me. That’s why you enjoyed trampling on my breasts. Right? Isn’t that right, Doyun?”
“…”
“…Doyun. Answer me.”
The grip on my arms grew tighter. It wasn’t enough to break bones, but the pressure was definitely threatening.
Sieun wasn’t an active hunter. She was weaker than Mom, Chaewon, or even Yuna. But that was only in relative terms. Sieun possessed clear A-grade strength—enough to be considered the ace of any guild. If she felt like it, she could rip me apart with a single finger.
Sieun could kill me with terrifying ease.
…No, let me correct that.
If Sieun made even the slightest mistake in controlling her strength, I would die.
She was an awakened being with A-grade or higher power. People at that level were extremely rare, the kind top guilds fought over. If she wanted, she could earn far more money than she ever could as a streamer.
Yet Sieun had chosen not to become a hunter and became a streamer instead. There was a clear reason for that.
She couldn’t become a hunter in the first place.
Because mentally, Sieun was unstable.
She was easily swept away by emotion and just as easily lost her reason. In simpler terms, Sieun had strong menhera tendencies. And when she entered that state, she could no longer control her power.
In other words, I was currently in an extremely dangerous position. If Sieun slipped up even once, I would really die.
The moment I realized that, genuine fear of death washed over me.
…Haha. This is actually dangerous, isn’t it?
I could seriously die here if I’m not careful. It feels like I’m dangling off the edge of a cliff.
But I won’t be afraid.
Because I know exactly how to solve this situation.
My opponent is Sieun—someone I could never defeat with raw strength. In that case, I simply need to win using a different method.
And conveniently, Sieun is an ultra-perverted masochist who gets off on verbal abuse from her little brother. For a super cute, pretty-boy bishounen like me, beating Sieun is laughably easy.
As long as I don’t tremble, I will never lose to her.
Once I found the path to victory, I put it into action immediately.
Even as Sieun physically pressured me and tried to force her love on me, I refused to yield. Instead, I pushed back even harder.
I put on the same mesugaki expression I had acted out before. But a facial expression alone wasn’t enough. To completely flip the atmosphere, I reached out and pinched one of Sieun’s nipples hard.
“Huuuugh…!!!!!”
Even in this gender-reversed world, nipples were still erogenous zones. Especially when they were already stiff and erect from fantasizing about having sex with me.
The moment I pinched it, Sieun released me, collapsed to the floor, and shook all over.
I couldn’t stop here.
I stepped on Sieun where she lay. The sole of my foot pressed down right above her womb. I shifted my weight forward, crushing her uterus beneath me.
A hopeless masochist like Sieun would definitely get excited from womb pressure. But this still wasn’t enough. So I added words to push her even further.
“Pfft. Don’t get cocky, you premature-ejaculating masochist bitch who cums just from having her womb stepped on by her little brother~ Did a defective, inferior pussy like you seriously think you could marry me? Ew. Your delusions are honestly disgusting~ Why don’t you just go die already~”
“Uuuugh…!! Ha Doyun…!! You…!!”
“Hehe. Look at you throwing a tantrum, it’s hilarious~ But no matter how much you struggle, you’re still just a pathetic masochist getting trampled by her little brother~ I should take a picture and post it on SNS~ It’s so pathetic it’ll probably get a million likes~”
“Huu…!! Don’t take pictures…! Don’t take pictures…!!! You’re not supposed to take embarrassing photos of your wife…!!”
Sieun’s body had surrendered, but her mind still refused to submit. She was still completely fixated on marrying me.
Hmm. It looks like half-measures won’t be enough to completely break her.
Then I’ll just have to train her thoroughly.
I’ll make her submit from the deepest parts of her heart so she can never defy me again.
Ha, seriously. I didn’t want to go this far…
This is all Sieun’s own fault, right?
So don’t complain to me later when you’ve become a pathetic perverted premature pussy bitch.
I lifted the foot that had been pressing down on her womb and moved it to her crotch instead.
Her soaking wet pussy mound. I gave it a few light slaps with my sole—chap, chap.
There was a particularly bold clit right in the center. The moment I struck it, Sieun lost her mind.
“Hyeeeet…!!! Uuuuuugh…!!!!”
She trembled like an upside-down frog and came violently from her pussy.
Thankfully she was still clothed, so her juices only soaked her panties instead of splashing onto me.
Ha. She came that hard just from having her pussy mound slapped with a foot. The more I see, the more I realize what a pathetic masochist Sieun really is.
“Pfft. Did you seriously cum that hard just because your pussy got stepped on? What a pathetic quick-shot~ Can you even satisfy a man with such a worthless pussy? It’s five hundred percent guaranteed you’ll die a virgin~ Inferior genes that make pussies give up on reproduction~ If it were me I’d be so embarrassed I’d die~”
“That’s not true…!! It’s not a pathetic pussy…!! I can…!!! I can satisfy Doyun too…!!”
“Hehe. No one’s going to believe you when you’re drooling pussy juice everywhere like that, you know? I’d rather fuck an onahole than stick my dick in an inferior defective pussy like yours~ How pathetic, losing to a silicon cunt~”
“Uuuugh…!!!”
Hmm… Because Sieun has such a pathetic pussy, defeating her body is easy.
But breaking her mind itself isn’t so simple. Her love for me must be that genuine, because she was still staring at me with eyes that refused to give up.
It looked like I wouldn’t be able to subdue her with ordinary methods.
…Ha. Then I guess I have no choice.
I really didn’t want to use this method…
If I want to completely break even her mind, the only way is to use her actual pussy hole.
I was trying to delay having sex as long as possible because the moment I do it’s basically UFC… But if I don’t thoroughly break Sieun, I might actually die. I have no choice but to do it.
Ah. So I’m really going through with it?
There’s no turning back now.