[Incest] Making a Friendly Family 555 (Seyoung) (Seyoung

555

“Ugh, ungh… Shi-woo oppa!”

Se-young composes herself, her breathing ragged, and cautiously looks up at Shi-woo.

“Ungh is informal, you know!”

With his penis rammed deep inside Se-young’s crack, Shi-woo speaks in an imposing voice.

“Ah… Haa… Yes, yes… Hieuuuut!”

Se-young, seemingly intimidated by Shi-woo’s overbearing tone, answers with respectful speech along with her moans.

It’s hard to gauge whether Se-young is acting or reacting instinctively, her expression is so subtle.

“And you need to get the honorifics right! If Mom is a slave, what should her daughter call Mom’s master-nim?”

Shi-woo speaks as if trying to tame Se-young, pressing his pelvis down roughly.

Se-young surely knows the title that Mom had been shouting all night from the next room, directed at Shi-woo.

No, even long before that, Se-young must have known about the contents of the slave contract and the inheritance clauses.

Se-young’s body trembles, paruru paruru, as Shi-woo’s pelvis crushes her.

“Haa… Huuu… Haeuuut…”

Se-young lifts her chin, looks up at Shi-woo, and meets his eyes, her breathing ragged as if struggling.

“Why? You can be a cum receptacle toilet, but you can’t say ‘Master-nim’?”

Shi-woo lightly mocks the humiliating declaration Se-young had made just before nearly reaching her climax.

“Haeuuut haaaa… Haeuuut…”

Se-young, suppressed by Shi-woo, twists her body and squeezes out moans.

Instantly, Shi-woo moves his waist quickly, thrusting deeply into Se-young’s body.

Cheolpeok cheolpeok ssupeok peok peok!

Shi-woo’s penis digs deep into Se-young’s body, pounding her uterine entrance and insides.

Se-young’s body is deeply crushed by Shi-woo’s pelvis, then bounces back up with a cheolpudeok due to the mattress’s rebound, repeating the cycle.

“Haeung haaang Master-nim! Haeuuut… Master-nim…!”

Se-young wraps her arms and legs tightly around Shi-woo’s body, clinging to him with all her might.

With her eyes tightly closed, Se-young calls Shi-woo Master-nim and embraces him.

“Open your eyes and look at me! If you call me that while hugging me with your eyes closed, it’s no different from sleep-talking!”

Shi-woo slightly pulls back the pelvis he had been pressing down and orders Se-young as if he were coaxing her.

Following the order, Se-young releases the strength in her arms and legs that had been embracing Shi-woo’s body and looks up at Shi-woo.

Her gaze is languidly unfocused, as if she had lost her bearings for a moment.

“Yes, yes… Master-nim… Heuuut…”

Se-young looks up at Shi-woo with faintly opened eyes, calling him Master-nim with respectful speech.

“Hiiiing…”

Se-young adds a whimpering, whining sound after calling Shi-woo by his title.

As Shi-woo’s penis swells with power, it expands heavily, as if widening Se-young’s pussy that tightly surrounds it.

Se-young arches her back and curls her body inward, tightening her pussy against the swollen penis.

Cheolpeok! Cheolpeok! Cheolpeok!

Shi-woo moves his waist while looking straight down at Se-young’s eyes.

With the feeling of shaking off the flesh of her pussy and the mucous membrane inside her vagina that are clinging to his penis, Shi-woo violently stirs his penis inside her pussy.

“Hauuk! Hauuk! Haaang!”

Se-young’s rough moans echoed through the room.

After moving his waist for a while, ramming his penis into Se-young’s pussy, Shi-woo suddenly stops moving again.

Shi-woo wildly pounds away, then abruptly stops his waist several times to check on Se-young’s condition.

Although her frame and flesh as a woman were gradually developing, Se-young still had the body of a delicate, young academy student.

With the fragile body of a young academy student, Se-young is struggling to accept Shi-woo’s fierce pounding, her limbs trembling as if she might break.

Looking down at Se-young, who seems to have reached her climax and is trembling finely, Shi-woo continues to lightly bounce his waist without stopping.

Chabak chabak chalbak chalbak!

The sound of playing by bouncing feet in a shallow stream is coming from Se-young’s pussy mound.

“From now on, when you do this kind of thing with me, pay attention to your honorifics and tone! You’re the only one in our house who speaks informally during sex with me, Se-young!”

Shi-woo continues to move his waist shallowly at close intervals, telling Se-young as if giving her a warning.

“…Heuu… Yes… Haeuuut…”

Se-young awkwardly composes her trembling body, answering due to Shi-woo’s exquisitely controlled thrusting.

“But oppa! Haa… Seon-mi even calls oppa ‘Dear’? I… only call you Master-nim?”

While doing so, as if trying to clarify their relationship, Se-young mixes informal speech as a younger sister when asking Shi-woo.

For some reason, Shi-woo’s heart seemed to flutter with a thrilling excitement at Se-young’s almost-formal yet informal speech.

It wasn’t just the almost-formal speech, but the content of her words itself was practically saying that she also wanted to use the title of a married couple with Shi-woo…

As if responding to the possibility of another relationship that Se-young was suggesting, Shi-woo’s penis was swelling with excitement.

Se-young slightly wrinkles her face due to Shi-woo’s penis swelling inside her pussy, but regains a smile on her lips…

A ticklish and ecstatic sensation seemed to be transmitted from Se-young’s subtle expression and the sensation of her pussy enveloping his penis.

“I even wrote a marriage contract with Seon-mi yesterday… so I’m telling you to think of it as an actual married couple relationship when calling me that!”

Shi-woo mentions the marriage relationship he had with Mom yesterday, subtly boasting to Se-young about his achievements.

“Then what about Seon-ju? Seon-ju also sometimes calls Master-nim ‘Dear,’ right? Did you write a marriage contract with Seon-ju too?”

Se-young continues to press Shi-woo with a cute tone and expression, using almost-formal speech.

“Seon-ju just calls me that on her own! Now that I’ve officially become a couple with Seon-mi by even writing a contract, I’m going to tell Seon-ju to stop calling me that!”

Shi-woo explains and clarifies the title and relationship between married couples to Se-young in a firm tone.

“Piiii~ What’s that~! Poor Seon-ju~! Then no one but Seon-mi can call Master-nim that anymore?”

Se-young makes a slightly sulky sound, asking as if she is very disappointed.

“It’s only natural that you can’t call me that if you’re not married~! Why? Are you interested in that too, Se-young?”

Shi-woo looks down at Se-young with a playful smile, asking as if testing her intentions.

“I like both Seon-mi and Shi-woo oppa~! Mom was taken away by oppa, and now oppa is about to be taken away by Se-jin Noona’s daughter~!”

Se-young speaks in a gloomy yet slightly provocative tone, as if she knows the details about the marriage contract that Se-jin Noona sent.

“Huh?… Uh… That’s how it turned out…”

Shi-woo tenses his body, subtly twitching his pelvis and thigh muscles as if he was momentarily caught off guard.

He had vaguely guessed that Se-young probably knew much more about the marriage contract that Se-jin Noona sent or Se-jin Noona’s situation than he did.

But now that he heard the story from Se-young’s mouth, Shi-woo was feeling very awkward.

“Interest or whatever~ I was originally going to marry Seon-mi first~! Seriously! And then marry oppa and connect Seon-mi and oppa~! But oppa took Seon-mi first on his own~ Hiiiing!”

Se-young confesses her absurd plan that went awry without anyone knowing, saying it as if she feels unfairly treated.

Shi-woo looks at Se-young’s disappointed expression, unsure whether she is genuinely expressing her regret or just playing a cute prank.

“Really? But if you were going to marry me anyway, isn’t it better this way? If you just marry me, you’ll be sisters-in-law with Mom… You can get along even more closely with Seon-mi without having to marry her!”

Shi-woo says, pushing his penis deep inside Se-young’s pussy while lightly pounding as if rubbing.

Ssulkkeok! Chulkkeok! Chulkkeong!

Shi-woo’s penis widens Se-young’s pussy that is tightly clamping down, and is pushed deep inside again.

“Haeuuut… Haaat hauuut… I… Is that so? Haat~ Then I can call oppa ‘Dear,’ right?”

Se-young was talking while looking at Shi-woo’s eyes, even as her pussy was being pounded by Shi-woo.

“Yeah, but we have to write a marriage contract! Since we’re doing it officially! You saw it yesterday, right? Like Seon-mi signed…”

Shi-woo continues to move his waist, speaking as if seriously explaining about Se-young’s question.

“Heueung… Th… Then after I marry Master-nim… Haeung… I want to marry Seon-mi too… Heueuuut… Haaang…! Haaat…”

Se-young endured Shi-woo’s pounding, continuing her words with breath that seemed to be running out.

Looking at her like that, Shi-woo’s penis, which was going in and out of her pussy, was throbbing.