Chapter 257
Translator: RaidenTL
Chapter 257

Slap!!
Si-woo stopped his hips and delivered a stinging slap to his mother’s buttocks with his palm.
The sound of flesh hitting flesh echoed loudly through the master bedroom.
"Haa-eut...!"
A moan, sounding almost like a gasp, escaped his mother’s lips as she lay prone, trembling while he held her leash.
Along with that moan, her pussy hole tightened around Si-woo’s penis as if squeezing out every drop of pleasure.
"You should be biting down hard! Just like your pussy is biting my cock right now, Seon-mi!!"
Si-woo interrogated her, his voice sharp because she had let go of Se-young’s nipple. He intentionally used crude language, speaking to her in a scolding tone.
Snap!
As if demanding an answer, Si-woo yanked the leash of her dog collar, creating a sharp, tense sound in the air.
"Haa-eut...! Yes... yes..."
His mother’s answer came out sounding flustered.
After responding, she desperately sought out the protruding bud of Se-young’s breast with her lips.
Looking down at his mother—who had answered him in formal speech and was now struggling to find Se-young’s nipple—Si-woo felt a thrill so erotic it sent shivers down his spine.
Schlup!
His mother finally found Se-young’s nipple against her cheek, took it into her mouth, and began to suckle greedily.
Si-woo placed his hand on her buttocks.
As if praising her for her behavior, he rested his palm on her rear and began to stroke it gently.
His mother’s buttocks were already red and swollen from the two slaps he had just delivered. As Si-woo’s hand rubbed against them, she flinched as if startled.
"Huuuuuuu..."
She let out a long breath while keeping Se-young’s breast in her mouth, as if the stinging, burning pain was washing over her. She huddled her body, seemingly enduring the shameful agony.
Soon, as if gradually submitting to the "gentle pain" Si-woo was providing, she relaxed her body and accepted his touch. For some reason, her buttocks felt incredibly lewd as they pushed back toward his hand.
Squelch!
Si-woo thrust his penis deep into the crevice of her center and gripped her buttocks tight.
"Haa-eut!"
His mother let out a moan at the sudden surge of pain.
Even as she moaned, she did not let go of Se-young’s nipple.
His throbbing cock, his mother’s tightening pussy, and the nipple held between her lips felt as if they were all connected by a single, shared nerve.
Si-woo stroked her buttocks as if caressing Se-young’s breasts.
It felt as though a new bond was being forged between son and mother, and mother and daughter.
Si-woo moved the hand holding the leash and placed it on the other side of her red, swollen rear. With both hands—one free and one holding the leash—he cupped her large buttocks from both sides.
He began to move his hips vigorously.
Splat! Splat! Splat!
The sound of wet flesh friction echoed from his mother’s pussy hole, which was overflowing with fluids.
"Hng...! Heut...! Huuuuuup...!"
His mother desperately tried not to lose Se-young’s breast while enduring Si-woo’s pounding. The vaginal flesh and ridges wrapping around Si-woo’s member tightened their pressure more and more.
Si-woo’s hands, which had been gripping her butt, eventually moved to wrap around her waist, right above the curve of her hips.
He began to thrust in earnest.
Thud!! Thud! Thud! Thud!! Whack! Whack!
Si-woo’s pelvis slammed against her buttocks, creating a series of heavy impact sounds.
"Ha-ahng... Ha-aaat!! Huup...! Please...!! Ha-ahng!"
As Si-woo’s massive member tore through the tightly gripping vaginal walls and hammered as if to pierce the entrance of her womb, his mother moaned like she was losing her mind.
Every time Si-woo drove into her hole with the force to run her through, her entire body shook. Se-young’s body, which his mother was leaning her head on, shook along with them.
However, Se-young remained peacefully asleep, indifferent to the sounds the two were making and the heavy vibrations of the bed.
* * *
Whack! Whack! Whack! Whack! Thwack!
Si-woo’s brutal pounding continued for a long time.
"Ha-ahk...! Ha-eut! Hng! Si... Si-woo... Mom is... right now... Ha-eugh!! Si-woo-ya!!"
Having already reached several climaxes from Si-woo’s piston thrusting, she finally pulled her knees back and called out his name desperately.
She was so desperate in that moment that she even forgot her promise to spend the night as Master and slave. It seemed she called out to stop him because of a sense of crisis, feeling like she might faint if his violent pounding continued any longer.
Pressed down by Si-woo, she stretched her legs out and pressed her pelvis as close to the floor as possible. She tensed her buttocks with all her might and trembled violently, as if resisting his thrusts.
Noticing that she was on the verge of passing out, Si-woo stopped his hips for a moment to catch his breath, leaving his member buried deep inside her pussy hole.
"Ha-ah... Ha-ahng... Ha-aaaaa..."
His mother’s breath came in ragged, shallow gasps as her body continued to quiver.
Slap! Slap! Slap!
Si-woo mercilessly slapped her buttocks, which were still tensed as she lay prone with her legs extended.
"Ha-at! Hng... Huhu-huk..."
Her moans were wretched, as if she were about to burst into tears.
Si-woo yanked the leash back hard.
"I told you I’m not your son right now!! You fucking bitch!! How dare a slave bitch speak informally to her Master?!"
Si-woo shouted at her, re-establishing the hierarchy between them.
"Yes... yes... Ha-ah... I’m... I’m sorry... Huk... Huhuhu-huk... Huuuuu..."
His mother sobbed as she answered him in formal speech.
The humiliation, powerlessness, and sense of defeat from being pushed to the brink of fainting by her own son’s genitals... and the arousal.
The fact that her son’s penis was still inside her, as robust as ever, filled her with a sense of awe-struck terror toward Si-woo.
The thought that she couldn't even fathom how many more times she would have to repeat this depraved act with her own son began to fill Seon-mi’s mind like thick mud in a swamp. That thought tangled with the various emotions blooming in her heart, paralyzing her reason.
Thud! Thud! Thud! Thud! Thud!!
Si-woo began to pound again, his penis rubbing against the layers of vaginal flesh that tightly enveloped him within her fissure.
Struggling not to lose her consciousness, which was drifting further and further away, his mother desperately gripped his penis with the entrance of her pussy and her vaginal muscles.
"Ha-ahng... Ha-eut... Ma... Master... Hng...! Master...!"
She moaned, repeating the title "Master" over and over.
Any shred of reason that would allow her to remember her dignity and duty as a mother had already melted away and evaporated.
"You crazy pussy-bitch, you sure can call your own son 'Master' easily, can't you?! Huh?!"
Si-woo stayed on top of her, continuing to grind his hips as he shouted at her.
Whack! Whack! Whack! Whack! Whack!
As if punishing her for her vulgarity, he buried his penis all the way to the root.
"Ha-ah... Ha-ah-eut... I'm... I'm sorry... Master... Ha-at... Ha-ahng... P-please... forgive me! Ha-ahng!"
His mother spoke as if begging for forgiveness, her voice thick with lewd moans. She was showing Si-woo the tone and attitude of a seasoned slave.
"If you were going to be like this, you should have done it from the start. You fucking bitch!! You just wasted my time!!"
Si-woo spoke overbearingly as he used all his strength to drive his penis into her pussy.
Still blindfolded, his mother buried her face in Se-young’s chest. Saliva spilled messily from her open mouth, soaking Se-young’s skin.
Thud! Thud! Thud! Thud!
Si-woo’s intense pounding continued relentlessly and cruelly.
"Ha-ahng! Master... Hng... I... now... I... I really think I'm going to... d-die...! Ha-eut!! Ha-aaaa-hng!!"
His mother pleaded with him, her body shaking as if it were soaked in pleasure.
She was now using the title "Master" and formal speech naturally, as if she had been completely subjugated without any further hesitation.
Perhaps she remembered Si-woo’s threat that if she fainted, he would rape Se-young lying next to her instead. Even in that state, she stiffened her body and tried to endure his pounding, desperately trying not to lose consciousness.
Schloop!
Si-woo pulled his penis out of her body.
Slap!
He delivered a sharp slap to her tensed buttocks.
"Ha-eut!"
She let out a gasp, her body flinching.
"You like this kind of thing, don't you, Seon-mi? Now, lie on your back!!"
Si-woo commanded her in a tone that suggested he was playing with a toy. He repeatedly pushed her to the brink of fainting before letting her go, treating her like his plaything.
Following his command, his mother rolled onto her side, turning her head toward Se-young as she lay back against the mattress.
Her lewd body was exhausted, her chest heaving violently up and down as she panted.
Her large, well-shaped breasts, her firm thighs... and the secret mound of flesh between her legs were all exposed provocatively before Si-woo’s eyes.