Chapter 91: Chapter 91: The Taste of My Sister’s Breasts is the Best... (18+)
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Chapter 91: The Taste of My Sister’s Breasts is the Best...
"So... shall we try SM once?"
"SM? You mean hitting and being hit?"
"No, it’s not just about hitting and being hit..."
"Brother, you still spank my butt when we do it."
"...You have to listen to the end. I said it’s not just about hitting and being hit."
SM play is short for SadoMasochism, involving elements of domination and submission, sadism and masochism[1].
Anyway, I’ve always liked SM play!
Of course, until recently, I was a virgin, so I’m not an SM master or anything. I just imagined these sadistic scenes when watching porn or masturbating.
I would get excited imagining scenes like tying up a woman and having sex with her, choking her, forcing her to swallow my semen, or making her submit by calling her "master."
Now, my sister Mi-hyun, with whom I have a sexual relationship, is also a kind of sex partner...
I wanted to try things I couldn’t suggest to the innocent So-hye.
Plus, SM play isn’t just about tormenting a woman; it requires the woman’s consent and active cooperation...
So, to convince Mi-hyun and get her cooperation, I explained why I get excited about such play.
"Do you remember when we lived in that one-room apartment?"
"Yeah, it wasn’t that long ago. Just six months ago? If not for Mr. Young-cheol, we’d still be living there."
"..."
I suddenly felt like telling Mi-hyun how our mom was treated by Mr. Young-cheol, but I held back.
"Anyway, when we lived there, I used to secretly watch Mom and Dad having sex."
"Really? I did too."
"Really? I didn’t notice you were awake."
"You’re just clueless, brother. I was awake too when Dad was having sex with Mom, and it was driving me crazy."
Mi-hyun was also awake often.
Since I usually slept closer to Mom and Dad, and Mi-hyun preferred sleeping by the wall, I didn’t notice she was awake.
It seems Mi-hyun was also watching our parents having sex from behind me.
Knowing this excited me even more.
Did Mi-hyun get excited watching our parents having sex like animals?
"Anyway, back then, Dad would hit Mom’s butt and breasts during sex, and I think that’s how I developed this inclination."
"So... do you want to do it like Dad did to Mom? With me?"
Mi-hyun smiled slyly and asked, and I answered honestly:
"Yeah... so even now, I sometimes spank your butt during sex."
"Is that not enough? What else do you want to do?"
"Well... I guess I just like that kind of thing because I’m like Dad."
"What about you?"
Mi-hyun thought for a moment before speaking:
"I... I actually want to be like Mom."
"What? Really?"
"Yeah... Dad really treated Mom like a dog. When I was younger, I didn’t understand why, but after having sex myself, I realized I kind of like being treated that way too."
It seems Mi-hyun inherited Mom’s genes strongly.
"Did your past boyfriends do that kind of thing? Like spanking?"
"No, not really. The guys I dated were all trying to be gentle, so it was frustrating. I even had to ask them to curse at me. None of them were like you, brother."
"What are you talking about? Why am I a bad guy?"
"You hit your sister and have sex with her. You’re a bad guy."
Mi-hyun’s face flushed as I asked if she got excited from being hit during sex.
"Uh... maybe a bit."
Mi-hyun finally acknowledged her masochistic tendencies.
It’s strange to discuss such topics with a sibling, but...
One of the best things about having a sexual relationship with my sister is that there are no boundaries in our conversations.
Even in a sexually open household, discussing these topics with a sibling would be unusual.
However, since we’ve broken all taboos as both siblings and sex partners...
We can share childhood memories like normal lovers, and also discuss erotic and stimulating topics that normal siblings can’t.
We’ve developed a peculiar relationship.
Mi-hyun smiled slyly, her face flushed, and joked:
"What would people think if they knew we’re having this conversation, brother?"
"Well, wouldn’t they be turned on? That’s why incest is popular in porn and manga."
"But if they find out... they’ll point fingers at us."
"Probably."
We both imagined what would happen if our relationship was exposed and shook our heads.
I changed the subject to continue our conversation:
"Anyway... shall we go tomorrow?"
"An adult store?"
"Yeah, I saw one while passing by."
"So, are we going on a date?"
Uh...
A date with my sister?
It feels more awkward and ticklish to say we’re going on a date than to have sex.
Why does saying "date" feel more like "true incest"?
But since I wanted to try SM play with Mi-hyun, I made promises like a presidential candidate:
"Yeah, let’s go to the movies or something while we’re out."
"...What? Are we really going on a date?"
"Well, I’ll buy you anything you want."
"Then take me to lunch at a nice place too."
"Lunch? I bought it today too."
"Not delivery. Somewhere fancy, please."
Mi-hyun was being playful, trying to spend my money, but...
What was once a behavior I’d scold her for as siblings now seemed endearing since we’ve become like a couple.
Absolutely not because her large breasts under her school uniform were bouncing like milk bottles...
Ah... I couldn’t resist.
Let’s do it once and talk later...
I rushed towards Mi-hyun’s large breasts peeking out from her school uniform and took them in my mouth.
"Ah...! Are you crazy? Do it again?"
---
Mi-hyun’s breasts are amazing.
Usually, large breasts are less dense and soft, but Mi-hyun’s breasts are incredibly elastic and firm despite their size.
Their shape is a mix of teardrop and spherical, and they maintain their perfect shape even at that size.
I wonder if the Cooper’s ligaments supporting her breasts are unusually strong.
As I thought about this, my mouth instinctively bit and sucked on Mi-hyun’s large breasts.
Mi-hyun’s waist twisted as she was teased by my tongue.
"Haa...! My nipples are so sensitive... Ah!"
Since Mi-hyun acknowledged her masochistic tendencies earlier, I thought it was okay to be a bit rougher.
Women’s nipples and areolae can be bitten with teeth, and even if they leave marks, they recover quickly.
This is because they’re constantly bitten during breastfeeding.
"Ah... haa... ouch?! Ah, it hurts... Brother, it hurts..."
I bit Mi-hyun’s nipples and areolae mercilessly. Crunch.
As I bit her areola and pulled her head back, her breast stretched like mozzarella cheese between my teeth.
"Heh... Ah!"
Mi-hyun felt pain but also a tingling pleasure as her breasts were pulled.
I lay down, and Mi-hyun climbed on top of me, her breasts still in my mouth.
"Do you want to do it while sucking my breasts? You’re a bad brother..."
Mi-hyun teased me, but my mouth was busy.
"Haa... haa... this is the fourth time today... Ah... Ahh..."
As Mi-hyun sat on my lap and inserted my erect penis into her vagina...
"Ah, it really hurts... be gentle..."
As she moved her hips, slowly at first and then more vigorously, slapping her large butt...
"Haa... haa... Ah... Ah..."
I felt intense pleasure, and my words became mere moans.
Throughout the sex, I never let go of Mi-hyun’s breasts, like a pitbull gripping its prey.
I understand why people crudely call them "boobs."
I could suck on my sister’s pink, erotic nipples all day, even with their faint milky scent.
The taste of my sister’s breasts is the best...
But...
Everything feels good, yet somehow I feel like I’ve forgotten something.
As I thought about it, I suddenly realized...
"Wait... I have a date with So-hye tomorrow...?!"
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