Chapter Index

    (new)

    “Haa… Peck. On my sister’s neck, peck… Is that what you did? That’s why her skin turned red?”

    Everywhere your lips pass, a warm heat fills them.

    The tongue moves like a snake, spreading saliva.

    “That, stop… My love… .”

    “Ugh, slurp. I feel weird… slurp. Because it’s my body, but because it’s you, haaa… .”

    A hot wind blew across my neck.

    There was something warm and sweet, and the scent was very strong.

    “Oppaaaa… .”

    And then he brings it to me as if burying his body in it, and I flinch at the hard stick poking my side.

    “Here, huh… It’s getting bigger again… .”

    Swish- swish- swish-

    The sound of trousers rubbing against each other is everywhere.

    Sarang’s breathing becomes increasingly difficult.

    And I can feel the throbbing of his hard cock rising beyond his pants.

    “Oppa, oppaa… .”

    It was like a dog in heat grabbing a person’s leg and shaking its waist wildly.

    I try to hold my breath and follow Sarangi’s lead, but soon after, my movements suddenly stop.

    “… Ugh, ugh… I can’t do this anymore.”

    Is it a declaration or a notification?

    What was certain was that Sarangi was raising her body and digging between my legs.

    “Ugh, ugh! Si, gentleman!”

    “Haa… It’s okay. I got it, just relax.”

    I tried my best to close my legs that were spread out to the side, but it was no use.

    It was as if my legs were spread apart and Love would sit between them.

    And then I felt that big, thick thing that was naturally positioned on my calf.

    Swish- Swish-

    “Ugh… Is this the right way to do it?”

    “Oh, no… please… .”

    My strength was so lacking that I had a hard time blocking it, let alone pushing it away.

    “Ha, huh… I really wanted to have sex with oppa, but heh… I didn’t know it would turn out like this.”

    It seemed like he couldn’t hear me anymore.

    Just touching my body, groping my body, rubbing my body.

    “Huh… It’s okay though. You’re my brother. It feels a little weird, but it’s okay.”

    A sticky voice whispers in my ear.

    And then a hand dug into my clothes.

    It’s hot and big, and it slowly moves up, brushing against my side.

    “Huh, sob… .”

    The delicate skin is crushed by the fingers,

    Tickling the ribs, higher and higher.

    “It’s warm. And my brother’s heartbeat, it feels like it’s going to burst at any moment.”

    His face sank down onto his chest.

    And the hand that dug into my back very skillfully took off my bra.

    Toouk-

    As the bra comes off, her breasts begin to spread to the sides.

    A hand covered it.

    “Hehehe… It’s soft… It’s completely different from when I touched it.”

    Then, he groped my breasts and left a short comment before sticking his head inside my clothes.

    “Haa… Slurp. Heh, slurp.”

    “Ugh! Ah, that won’t work… .”

    I tried to push it away somehow, but all the strength I had was gone.

    I was sucking on her breasts like that, and I was fluttering like a deflated balloon.

    Rattle rattle-

    “Yaaa …

    “Oh my… My sister is here. It was great, wasn’t it?”

    I already didn’t have the energy to answer.

    It takes my breath away to even move a hand.

    “Haaah… I want to do it quickly… .”

    “Huh, huk!”

    My breasts were stinging.

    Sarang’s hand gently grabs her nipple and twists it, lifting her body.

    And after tidying up my clothes, he went straight to the door and opened it.

    “… Hey! What are you guys doing in the room right now?”

    “I just wanted to talk. Why?”

    “Why are you doing that with the door locked?”

    “That’s my heart.”

    “Ha, okay. Get out of the way.”

    Arami strode into the room.

    And it comes straight to me.

    “Sigh… .”

    The look in his eyes as he looked at me on the bed was complicated.

    Arami kept opening her mouth, but she didn’t say anything to me.

    And he scans my body from side to side with his eyes.

    I shrugged my shoulders for no reason.

    A hand reaches out and grabs me, lifting me up.

    “… If you’ve finished packing, let’s talk outside first. Is that okay?”

    “Uh, uh… .”

    Arami put her arm around my shoulder.

    And then he goes into the living room, leaving Sarang-i, who is still loitering near the door, behind.

    … … It seemed as if Sarang had no intention of hiding the bulge in the front of her pants.

    *

    (New Love)

    “… … So?”

    “Ha, did you hear me correctly?”

    “Yes.”

    “But, you don’t understand?”

    ” I did it, but what does that mean?”

    My sister said this.

    My brother and I’s bodies changed because of menstruation…

    “You don’t believe me?”

    “Uh… Well, no matter what, it’s hard to believe that it changed because I had my period. Are you kidding me?”

    “Am I supposed to be making fun of this now?”

    “… That doesn’t make sense… .”

    “Then, that, that turns into sex? Did you readily believe that?”

    “… I saw it. I saw it with my own eyes, so I believed it. ”

    “You know that too. You said you had your period yesterday. That’s why it changed, right?”

    “… So you want me to wait until my next period?”

    “Uh.”

    “Heh, heh heh heh… .”

    I felt like my sister was teasing me.

    So I asked my brother, and he nodded his head in agreement.

    “Ha… That’s ridiculous… .”

    “Okay.

    It was a little hard to believe it straight away.

    Even though sex changes your body, it doesn’t make sense to say that your body changes again just because you have your period.

    “So does that mean it changes unconditionally once a month?”

    “Uh.”

    “If we’re not together? But still… Ah… .”

    It was so absurd that I forgot about it.

    My brother and I both changed overnight, and that day just so happened to be the day my period was due.

    “… Do you understand now?”

    “… … .”

    I was jealous of my sister who could change her body.

    If it were me, if it were me, then it would have been better, because that’s what I thought.

    So I thought that earnestness had reached me.

    So I thought my brother and I had switched bodies.

    But, menstruation… It was just because of menstruation, so I felt a little disappointed.

    I wish it was a little more romantic, prettier, and cooler…

    “… Hehehe, yes.”

    I guess I should say I was a little upset… or disappointed… Anyway, I felt a little bit like that.

    Of course, that doesn’t mean my feelings towards you will ever change.

    “But, are you saying we should live like this for a month? Me and my brother?”

    “Uh.”

    “What’s wrong, Unnie?”

    “… What?”

    “What are you, sis, doing that to me and my brother?”

    “How is this just you and Downie?”

    “Since my brother and I switched, it’s just my brother and I.”

    “Ha, you heard everything just now. I said I’m going to marry her? But how can I just sit by and watch you and her do that shit?”

    “What does that matter? I don’t care.”

    “Hey! Me, haa… I said I care? ”

    My sister, who had been yelling, got up from her seat.

    And then he opened his eyes and glared at me.

    “Then, you only think about yourself?”

    “… … .”

    “Do you not care whether my brother and I just stay like this or not? Did you even tell your brother?”

    “… Downie said he understood.”

    “Then what about me? I’m the party’s representative, so you’re just notifying me like this?”

    I felt a little annoyed at my sister’s confident answer.

    “Ha… I’m sorry about that, but even so, how could you let me have sex with you and Down? That’s really… Haaah… .”

    “Sister. Is this the end for me and you? What if we change again? Will I wait again? And if we change again, will I wait again? Then I will just wait for the rest of my life? What about my life? What should I do?”

    My sister just opened her mouth slightly and stayed still.

    And then he blinked and soon lowered his head.

    “Sister, it’s already too late. Don’t you know?”

    “… … .”

    “There’s no turning back now. My brother and I have already changed bodies, and if we have sex, it will change, if we have our periods, it will change, and our bodies will change throughout our lives. But, you want me to just sit there and wait for it to change? Isn’t that too inefficient?”

    “… It’s not a matter of efficiency right now.”

    “Why aren’t you asking? Isn’t it because it’s none of your business that you should be talking so carelessly?”

    My sister, who had become quiet again, wiggled her fingers.

    And next to him, my brother froze as if he was surprised.

    “… Let me think about it.”

    “Ha! What do you think? Even after explaining it to you like this, you’re still going to be so selfish?”

    I was frustrated.

    And it was annoying.

    “Just a minute, let me think about it for a minute.”

    “… Ha, really, just a moment.”

    My body was boiling with heat.

    I was honestly so angry.

    And I hated my sister who tried to monopolize my brother, and I also hated my brother who just stood there with his mouth shut.

    “Hurry up. The uncle and aunt are waiting too.”

    “Sigh… .”

    My sister’s deep sigh echoed through the living room.

    I kept moving my mouth, but nothing came out.

    “How long do you have to wait? When will you ever finish thinking about it?”

    I definitely wasn’t doing this because I wanted to have sex with you.

    Anyway, I got angry because I felt like they were taking this issue, which is deeply intertwined with my life, too lightly.

    “… … This won’t work.”

    “You said you thought about it, but that’s all you can say?”

    “Oh, really not.”

    My sister opened her eyes wide as if she had made up her mind and spoke firmly.

    “Sigh… .”

    And I looked at my brother.

    “Do you think the same, oppa? Is my life okay? Do you like this, oppa?”

    “… … .”

    After I finished speaking, silence fell over the living room.

    What broke the silence was the old man’s phone call.

    As promised, we went straight into the house.

    The car was quiet the whole way there.

    After I got home, I went straight to my room.

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