Chapter Index

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    Se-hee’s older sister’s legs, which had been wrapped around her younger brother’s waist, were now loosely limp, falling onto the mattress of the bed.

    Looking up at Se-hee’s older sister, who was covering her face alluringly with her arm, Si-woo scratches her nipple with his fingernail as if checking her condition.

    “Haa…euuu….”

    Se-hee’s older sister arches her defenseless body, tightening the vaginal opening where Si-woo’s penis is inserted.

    Having reached her climax not long ago, Se-hee’s older sister is reacting sensitively to Si-woo’s stimulating finger caresses.

    As if resisting Se-hee’s older sister’s vaginal opening, which is tightening with pressure, Si-woo’s hardened penis also gains strength again.

    Si-woo places his arms on the mattress as is, slightly lifting his upper body and looking down at Se-hee’s older sister.

    Se-hee’s older sister was covering her face with both arms.

    As if still embarrassed, Si-woo removes one of Se-hee’s older sister’s arms that is covering her face, spreading it out to the side.

    Si-woo spreads her arm in an ‘L’ shape and presses it down on the bed.

    Then, he brings his head to her shoulder and leans his body down as if collapsing forward.

    Si-woo’s face is positioned as if intersecting with Se-hee’s older sister’s head, with her neck slightly bent.

    Si-woo’s lips are raised to near Se-hee’s older sister’s ear, facing her cheek.

    In that state, Si-woo inserts his remaining arm behind her neck.

    Si-woo pulls the arm inserted behind Se-hee’s older sister’s neck, pushing his penis even deeper into her hole.

    Thrust!

    “Haa…euuu…oot!”

    Se-hee’s older sister tenses her body again, accepting Si-woo’s member deep inside her.

    Se-hee’s older sister’s body was pierced by Si-woo’s penis, appearing to be completely crushed and bound.

    “Se-hee, you knew too, didn’t you? Since when?”

    Si-woo lowers his voice and asks Se-hee’s older sister.

    “Wha…what are you talking about?”

    Se-hee’s older sister reacts as if flustered by Si-woo’s sudden question and asks back using polite language.

    “I’m talking about the marriage contract on my desk! The one with Se-jin’s older sister’s signature on it!”

    Si-woo puts weight on his pelvis, pressing down and saying to Se-hee’s older sister.

    “Haa…oot…I…I didn’t know…I…I saw it for the first time today…haa…euuu…”

    Se-hee’s older sister stutters as she answers, as if Si-woo’s penis, deeply embedded in her vaginal opening, is overwhelming.

    “You saw it for the first time today? Really?”

    Si-woo slightly pulls back his pelvis, which had been pressing down, and asks Se-hee’s older sister again.

    “Yes…Master…Shin-bi and So-ra brought it…Haa…showed it to me for the first time today…”

    Se-hee’s older sister answers Si-woo’s question, sobbing as if catching her breath.

    “Why do they have it? Why are Shin-bi and So-ra involved in our family matters?!”

    Si-woo was asking Se-hee’s older sister as if pressing her, with a question he already knew the answer to.

    As if trying to place the responsibility for all these situations on Se-hee’s older sister…

    Se-hee’s older sister covers her face with one arm and shakes her head from side to side, as if she doesn’t know anything or as if she can’t speak.

    “Yoo Se-hee! Won’t you answer properly?! Damn it! When So-ra and Shin-bi brought that to my room, there must have been some conversation, right? Something like that popped up, weren’t you curious? Didn’t you ask any questions?!”

    Si-woo is speaking sharply, scolding Se-hee’s older sister with curses mixed in.

    “Ah…No…I asked…but…they just said that everything would be…resolved with that…that’s all they said…”

    Se-hee’s older sister speaks as if squeezing out and revealing the facts she knows, due to Si-woo’s oppressive questioning.

    “What? What will be resolved entirely?”

    Si-woo pushed his penis even deeper into Se-hee’s older sister’s body and asked.

    “Heeuueuk…As…as it’s written….I…I don’t know the details either…Haa…Master…Heuk…”

    Se-hee’s older sister answers urgently, sobbing due to the overwhelming pressure from Si-woo.

    “Se-hee, you damn bitch! You’re always so reckless, just running around all over the place! Huh?!”

    Si-woo tightens the arm wrapped around Se-hee’s older sister’s neck, brings his lips even closer to her ear, and speaks as if denouncing her.

    “You’re just giving your body to your friends like a whore, what the hell do you even know?!”

    Si-woo vehemently criticizes Se-hee’s older sister, speaking in a cold, piercing tone.

    Si-woo’s words seem to echo in the air.

    But Si-woo’s words soon came back to him, as if piercing him sharply from behind.

    As if trying to shake off the pain of being stabbed and pierced, Si-woo pounds Se-hee’s older sister in anger.

    Thud! Thud! Thud! Thud! Thud!

    Si-woo moved his hips, recalling the events of the last group meeting and the events at home today, as if expressing his frustrated feelings about Se-hee’s older sister and the surrounding situations.

    “Haa…eut haat haaak haaeeuk hawoooeut”

    Se-hee’s older sister lets out intense moans in time with Si-woo’s pounding.

    “You went to see Se-jin’s older sister before, right? The day you received the birth control pills and the key from Aunt Sun-joo after I ejaculated inside you!”

    “Why did you just hand over the key without saying anything then? How am I supposed to know what that means?! Why the hell don’t you bitches ever explain things properly?!”

    Si-woo continues to move his hips, speaking as if cornering Se-hee’s older sister.

    “Heeuuueu…Heeuueuk…Haa…I…if I’m going…there’s no choice…. …it’s the ru…rule… Haaak haat”

    Se-hee’s older sister spoke as if whispering, in a voice that Si-woo could barely hear.

    “What? Rule? You said rule? What rule?”

    Si-woo grabbed onto the word he barely heard and relentlessly pressed Se-hee’s older sister as if he would not let go.

    “Haa…eung…Tha…that’s why…I also told Si-woo that…I could pretend not to know…Haeuk…”

    Se-hee’s older sister does not give a proper answer to Si-woo’s question and continues to talk to herself as if she is out of her mind.

    “You damn bitches! What the hell are you talking about, what rule?! It was like that during the sex diet too! And the slave ledger too! Just you guys excluding me!”

    Si-woo moved his hips more violently, demanding an answer to his question from Se-hee’s older sister.

    “…Haeung…Bu…but still, I…like Mom… Heut…didn’t deceive you…Haeung… Heeuek…Heeung…”

    Se-hee’s older sister, mentioning her mother, speaks in a sobbing voice.

    Before she knew it, Se-hee’s older sister’s tone had returned to the informal language she usually uses with Si-woo.

    “Why are you suddenly talking about Mom here?!”

    Si-woo slows down the speed of his hip movements and asks Se-hee’s older sister, puzzled.

    “Heeuu…Be…because it’s something that happened because of Mom! Mom and Se-jin unnie…only think about themselves. So…I was thinking of doing it instead…Haa…Heuuuueuk…”

    Tears were flowing down next to her face, which was covered by her arm.

    Se-hee’s older sister is crying and talking as if she is wronged.

    “What?”

    Si-woo stops moving his hips, seemingly flustered, and reacts to Se-hee’s older sister’s tears.

    “I’m the same as you, Si-woo…Heuk…But…I’m always on your side, Si-woo…Heeuek…Heeuek…If this is going to happen, why didn’t you just let me do it with the brothers back then?”

    Se-hee’s older sister, as if having given up on everything, speaks while sobbing, in a tone that suggests she was hurt by Si-woo’s scolding and criticism just now.

    ‘Back then’ that Se-hee’s older sister is talking about now probably refers to the incident with her brothers at the group meeting.

    The incident a few days ago when she almost got raped by her brothers after taking an aphrodisiac in her drink.

    “Heuk…Heeheuk…Heeuueung…Heuk…”

    Se-hee’s older sister was sobbing as if her heart was broken, covering her eyes with one arm.

    Each time Se-hee’s older sister sobbed, her vaginal opening, which was surrounding Si-woo’s penis, twitched and tightened strongly.

    Si-woo feels inexplicably weak-hearted and watches Se-hee’s older sister silently for a while, not knowing what else to say right now.

    From the tightening of the vaginal muscles surrounding the foreskin and mucous membrane of his penis, and from her sobbing breath, a sincerity that he doesn’t know why seemed to be conveyed.

    **

    Looking down at Se-hee’s older sister who is crying, Si-woo’s large penis, which is embedded inside Se-hee’s older sister’s body, was somehow getting even harder.

    “Okay, now that you know~stop crying!”

    Si-woo, having returned to a gentle tone, is speaking as if trying to soothe Se-hee’s older sister.

    Se-hee’s older sister’s words and the events happening around Si-woo were not completely understood or accepted.

    But just by reaffirming her position that she is on Si-woo’s side, the anxiety, uneasiness, and worries that had taken root inside Si-woo seemed to disappear in an instant.

    Si-woo releases one of Se-hee’s older sister’s arms that he had been pressing down on the mattress of the bed.

    Si-woo kneels and raises his upper body while his penis is still inserted into Se-hee’s older sister’s body.

    Si-woo’s and Se-hee’s older sister’s chests, which had been touching, separate, creating a space.

    Se-hee’s older sister, who had been sobbing resentfully just a moment ago.

    Se-hee’s older sister stops crying and tries to calm her breathing, as if sensing the softened atmosphere in the room.

    That appearance seemed to stimulate both Si-woo’s sadistic instinct and his protective instinct at the same time.

    Si-woo inserts his arms under Se-hee’s older sister’s spread legs.

    Due to Si-woo’s arms being inserted under her knees, Se-hee’s older sister’s legs are lifted into the air and her crotch is spread open even further to the side.

    Si-woo lifts Se-hee’s older sister’s legs as is, pushing them up next to her chest.

    “Haa…eut…!”

    Se-hee’s older sister’s pelvis is lifted, and her body is folded in half like a flip phone.

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