Sleeping Seyoung

35

Siwoo came out of Mom's bedroom carrying Seyoung.

Since Seyoung's legs were spread apart and her buttocks were supported with his hands and they were facing each other, Siwoo's erect penis was rubbing against Seyoung's front part, faithfully receiving great stimulation with each step he took.

Today was the day Seyoung wore a bra for the first time.

Seyoung lifted her apricot colored pajama top up to her neck and showed Siwoo what she looked like wearing a bra.

Even though Mom was right where she could see, Seyoung only glanced at her, and she didn't pay much attention to her. 

She openly showed her inner skin to Siwoo, an act that was taboo in the family.

Perhaps because he had seen such a scene, Siwoo felt that Seyoung's body was different from the previous day.

Plus, Seyoung's that whisper…

The first time he heard the word "Perverted bastard" was so strong that Siwoo felt a shiver run down his spine at such a whisper.

Siwoo releases one hand that was supporting Seyoung's buttocks and puts his hand under Seyoung's pajama, slowly feeling the bare skin of Seyoung's back and sides.

He checked Seyoung's development by gently pressing Seyoung's back and buttocks towards Siwoo's chest and penis.

Clearly, the heaviness of Seyoung's body was changing day by day.

She is slowly growing into a sexy body like Mom and his older sister Sehee.

**

Siwoo pulls the blanket over the bed in Seyoung's room and lays her down.

Is it because Siwoo was very stimulated all day today?

Is it because he has confidence that it's okay even if Mom catches him?

He feels like he can try bold things with Seyoung.

Siwoo placed his hand on Seyoung's thigh.

He feels Seyoung's body, gently stroking it as if massaging.

Past her pelvis, smooth tummy and ribs...

And even her breasts began to swell...

Seyoung's body began to gain weight...

Siwoo was confirming the fact that she could no longer be considered a kid by Siwoo himself, one by one, through the hand he placed on her body.

Siwoo unbuttons Seyoung's top and opens it wide on both sides.

He sees the white bra he saw last night.

A small piece of cloth shyly covers Seyoung's chest.

It only covered it and had no function whatsoever to support her breasts.

Siwoo gently pushes up the small piece of cloth that ceremoniously covers her breasts.

Two light pink nipples stick out, seemingly asserting Seyoung's girlishness.

Siwoo gently bit the nipple with his mouth.

Then, he uses his lips to gently roll it.

Siwoo loved the feeling of the soft tip changing shape and rolling against his lips.

Seyoung's tiny breasts will soon grow to an enormous size that will shake the hearts of many guys.

'I don't want to her taken away! I don't want her to be seen!'

The moment Siwoo feels pampered, he pulls Seyoung's nipple hard into his mouth as if he were actually sucking milk.

"Uh...um..."

Seyoung's moaning sound

Siwoo was startled, but he wasn't too embarrassed.

For some reason, an unknown source of anticipation was filling Siwoo's heart.

**

When Siwoo came down from his room on the second floor, he brought his smartphone and a box of condoms in his pocket.

Of course, he was to use them, but when he sees Seyoung moaning, for a moment, an idea comes to his mind, so he takes out his smartphone from his pocket.

Siwoo stood up, pulled down his pants, and took out his huge erect penis.

Then he puts his object onto Seyoung's lips.

Holding the shaft of his penis with his hand, Siwoo gently pushes the tip of his glans against her lips, moving it up and down to open her mouth.

Seyoung's lips gradually open and Siwoo's things begin to squeeze into Seyoung's mouth.

Seyoung's mouth was moist.

The head of his glans and the top of the shaft are soaked with the warm saliva in Seyoung's mouth.

Finally, Siwoo put his large object in Seyoung's mouth.

Siwoo thinks that if he puts more in, Seyoung will wake up, so he carefully moves the object back and forth within that depth.

As the glans is rubbed, Siwoo can feel the texture of Seyoung's mouth and tongue.

The fact that Seyoung had his dick in her mouth seemed to amplify the pleasure Siwoo was actually feeling several times more.

He reached out his hand and squeezed the fleshy breast of Seyoung, then gently caressed her nipple.

Siwoo was enjoying himself, rubbing Seyoung's mouth leisurely.

After doing this for a while, Seyoung suddenly purses her mouth.

The moment of unbearable pleasure felt from Siwoo's things.

A tingling sensation passes through Siwoo's spine.

His body seemed to bounce and twist.

Seyoung's innocent and lovely face

Even though he didn't make any drastic movements with Seyoung's mouth licking, he feels like he wants to squirt out his semen.

Seyoung was providing extreme stimulation just by biting Siwoo's huge and violent cock and gently moving her lips.

"Ugh…"

Siwoo suppresses a moan as he tries to hold it in.

Seyoung uses her tongue and mouth to periodically suck Siwoo's dick, probably because she was in the habit of sucking Mom's milk.

Siwoo thought that with Seyoung's mouth like this, he would cum even if what she sucked was his finger.

How does Mom hold up when Seyoung sucks her tits?

As he was thinking, he felt a rush of ejaculation.

If he ejaculates in Seyoung's mouth, it will be very difficult to handle it.

He would have to clean the semen from her mouth, but he couldn't think of a way to keep Seyoung from waking up.

Siwoo decides that it is too dangerous to go any further and quickly takes pictures of Seyoung's face holding his dick with his smartphone.

'click'

'click'

'click'

After taking the picture, Siwoo tries to suppress the feeling that he is going to cum, and hastily pulls his dick out of her mouth.

Seyoung's saliva was drawing a line - curved downward - from the tip of the penis to Seyoung's mouth.

"Uh...uh...huuuh~ugh"

Siwoo's moans escape without even thinking about it.

He wanted to ejaculate on Seyoung's face or breasts right now, but Siwoo barely holds back the feeling of ejaculation because he wants to focus a little more on his goal of fucking Mom today.

Siwoo immediately opened the messenger app.

And he carries out the crazy act that came to mind in the moment while sucking Seyoung's breasts.

As if reporting to Mom, he was sending a photo of Seyoung that he had just taken.

Seyoung was asleep with her mouth wide open and sucking on Siwoo's dick.

Siwoo sees the number 1 next to the photo he sent, indicating that Mom didn't read it yet.

To be honest, even though Siwoo took such a bold action without hesitation, he was a little worried.

Because Siwoo felt like Mom was going to run out of her room at any moment and get angry with her eyes rolling back, asking what on earth he had done to his own sister.

What Siwoo did to Mom was still molestation that was carried out while both were conscious to some degree, but what Siwoo is doing to Seyoung now is literally shameless sexual harassment for which there is no room for excuses.

Siwoo may be beaten, kicked out of home, or in the worst case scenario, the police may be called.

However, along with such worries and anxiety, it was also true that the other side of Siwoo's mind was filled with excitement and anticipation, saying, 'If mom lets this slide too...'

Siwoo sat with his knees on Seyoung's bed, concentrating on the smartphone screen for a while.

Soon the number 1 next to the photo message disappeared.

As soon as he saw the number 1 disappear, he felt something like an exhilarating sound in his chest.

Mom checked the photo of Seyoung holding Siwoo's cock in her mouth.

Siwoo's body was shaking violently from the excitement that was added to his nervousness and guilt.

**

Siwoo was paying attention to the sounds from outside and waiting for the feeling of ejaculation in his penis to subside.

He never knows when Mom will run out of the master bedroom into Seyoung's room in anger.

As time passed, the sense of urgency and tension seemed to subside little by little.

In the end, Mom didn't even bother to send her reply or rush out.

Even putting Siwoo's thing in Seyoung's mouth has now been accepted by Mom.

This was a completely different issue from showing his ejaculation on Sehee's or Seyoung's panties.

Did her sexual expectations and reverence for her son outweigh her maternal protective instincts for her daughter Seyoung?

Siwoo got to thinking that maybe he could make Mom his real sex slave today.

**

Siwoo's thing was still stiff.

He was spending some time looking at Seyoung's pretty face, calming down the feeling of ejaculation, and the saliva that had been applied to the head of his glans and the upper pillar was now almost drying up.

Siwoo tries one last time to gently insert his penis into Seyoung's open mouth.

As soon as Siwoo put it in, Seyoung's mouth started clenching as if sucking milk.

Feeling extreme pleasure again

Seyoung's saliva was again being applied generously to the head of his glans and the upper pillar.

Siwoo pulls the object out of Seyoung's mouth.

Siwoo covers Seyoung with a blanket and takes off all the clothes he was wearing.

He came out to the living room with his clothes and belongings.

Siwoo was now standing in the living room, completely taking off his clothes and showing off his huge erect penis.

The head of the penis is covered in a lot of Seyoung's saliva.

If Sehee from upstairs came down and saw him, she might call him crazy.

Every time Siwoo walks slowly and moves towards Mom's bedroom, he feels the cold night air hitting his dick irritatingly because of Seyoung's saliva on his genitals.

So Siwoo heads to Mom's bedroom to finally own Mom completely.