Secretly with Mom Behind My Sister's Back
"Whew... Thank god I didn't run into the manager today."
After what I'd seen last night, facing him would have been seriously awkward. Luckily I went straight into on-site security duty and never crossed paths with him. A man like the manager would just quietly bury the whole thing. He knew perfectly well that blowing it up wouldn't do him any good.
Besides, I've got Mom now, too.
The wording sounded wrong even in my own head, but the fact remained: Mom was already my sex slave. A convenient tool I could use whenever I needed to vent my lust. Treating her that way had already become second nature.
Ding~
A text and a photo arrived from Mom. She was wearing one of the casual house dresses she always threw on at home—except she had nothing on underneath. She had angled the shot so her breasts and pussy were on full display.
I was already on my way home. I would be there in minutes, yet she still couldn't wait and had to start teasing me first.
Minjung's in the background of the picture, too?
Minjung was sitting on the sofa watching TV. Even knowing her daughter was right there, Mom had still sent me something this brazen. Just looking at it made my cock swell hard.
Vrrroooom!!
I rode the speed limit as close as I dared and hurried home.
"I'm home."
"Welcome back, son~"
"Hi, Oppa."
Mom came to greet me the moment I stepped inside, and my little sister Minjung chimed in with a playful hello of her own. Brown hair, a pretty face, a body that looked like it had been sculpted—everything about her was flawless, the way you would expect from a working model.
"You're a little late today. Don't tell me you were out meeting some girl behind our backs?"
"Work just ran long, that's all."
"Hnn... Fine~"
She eyed me like she wasn't fully convinced, then turned back to the TV.
"You worked hard. Want dinner right away?"
"Yeah. Please."
Mom shot a quick glance at Minjung, then pressed herself against me like a lover who had been apart for far too long.
"Then go change and come sit down♥"
I headed to my room, swapped into something lighter, and came back to the dining table. Mom and Minjung had already finished eating; only my portion was waiting.
"Thanks, Mom."
"Of course a mother does this much for her son."
I sat down and Mom settled right beside me, keeping one eye on Minjung yet clearly unwilling to leave my side—like a dog that refused to stop clinging to its master.
"You were in heat bad enough to send a picture like that?"
"I just thought my son would like it... hnn♥"
Minjung was glued to the television. While she was distracted I slid my hand onto Mom's thigh and stroked it slowly.
"Minjung's right here... haah♥..."
"The real problem is the mother in heat who took a dirty photo like that with her own daughter sitting next to her."
"I-I'm sorry♥ Nngh♥"
The verbal slap made her body shudder with open delight. Even in front of her daughter she couldn't hide the filthy instincts of a bitch in heat.
I never realized Mom was this lewd...
Ever since she became my sex slave her behavior had grown bolder by the day. Even with Minjung home she kept right on seducing me, flashing little dirty moments whenever she thought she could get away with it.
"Did you and Dad do this kind of thing behind our backs too?"
"Never♥... nngh♥... Your father never laid a hand on me when you kids were around♥... haah♥"
Just my hand on her thigh was enough to make her tremble. The taboo, the risk of being caught—it only made her burn hotter.
"Then that means you've gotten even filthier. You're seducing your own son while your daughter is right here."
"Yes♥ Ever since I became my son's sex slave I've turned into an even dirtier bitch♥ Haah♥ Haah♥"
Her body was flushed and feverish; I could feel the heat rising between her thighs. Whatever rule she and Dad had about not touching in front of the kids was long dead. The moment she became her son's sex slave, Mom had become a far more honest, far more shameless female.
"Take your clothes off."
"Huh? R-right now?"
I glanced over my shoulder. Minjung was still watching TV, paying us no attention at all.
"Yes♥"
With trembling hands Mom slowly peeled off the dress she was wearing.
Ssslip...
The fabric pooled on the floor. Completely naked, she sat back down in the chair.
"Haah♥... Haah♥... Haah♥..."
If Minjung looked this way she would know her mother and brother were in an improper relationship. Even so, Mom obeyed the order. She had already chosen being her son's sex slave over being a mother.
"Spread your legs, finger yourself, and pinch your nipples."
"Y-yes♥"
Her daughter was only a few meters away. The only cover she had was the chair itself, and even that barely hid anything. Still, Mom's hands went straight to her nipples and her pussy.
Schlick.
"Hnn♥"
"Make too much noise and she'll hear you."
"I-I'll be careful♥ Nngh♥... haah♥"
Filthy masturbation right under her daughter's nose. While her son ate dinner she became nothing more than a toy, crudely pumping her own pussy.
"Haahng♥ Aahng♥ Hnn♥"
Schlick schlick schlick schlick schlick
The wet, lewd sounds of Mom's pussy filled the air. Slippery juices ran freely, staining the chair and the floor. The thick scent of a bitch in heat drowned out even the smell of the food. Just sitting next to her was enough to make my cock strain hard against my pants.
Fuck, this is hot.
The manager had piled stress on me for days—nitpicking every little thing, then last night dumping that secret on me and scrambling my head. On top of that, today's security job had been a pain because of a sasaeng fan.
"Mom, you made my cock mad."
"I'm sorry♥ Nngh♥ Mom seduced you with that dirty photo... hnn♥"
Schlick schlick schlick schlick
She never stopped pumping her fingers. Before long she had two inside herself. After getting used to my thick cock, a single finger was nowhere near enough. She stared at my bulge with eyes glazed by pure heat, wordlessly begging.
"Your nipples are standing up that hard, too."
I pinched one hard.
"Hnnngh?!♥♥"
"Huh? Mom, what was that?"
"N-nothing! I just bumped my foot♥ Hnn♥"
"Be careful~"
The loud moan had drawn Minjung's attention for a second. She didn't seem suspicious, but even then Mom's fingers never stopped moving.
"You just talked to your daughter while pinching your nipples like that?"
"Y-yes♥ Nngh♥ Hnn♥"
Once Minjung locked onto a show she liked, she never looked away. That was the only reason we hadn't been caught, and the thrill of it only pushed both of us higher.
"Get under the table and suck my cock."
"Yes♥ Mom will make her son's cock feel good♥ Haah♥... Haah♥..."
Burning with need, Mom slipped under the dining table and dropped to her knees, staring straight at my cock. Her free hand never left her dripping pussy; the wet sounds kept right on going. The sight of her submitting to her son's cock in the same room as her daughter was pure fuel for a man's urge to conquer.
"Hnnmph♥ Chuuup♥ Nngh♥ Haahp♥ Nngh♥ Chuuup♥"
She opened wide and immediately took me into her mouth. She sucked the head deep, tongue swirling, working me with the greedy affection of a bitch who lived for her master's cock. Her philtrum stretched as she gave the filthiest blowjob she could manage.
"You like your son's cock that much?"
"Nngh♥ Chuuup♥ I love it♥ I love you♥ Nngh♥ Haahp♥"
She serviced me so diligently, never letting up, that the urge to cum rose fast. Mom looked up at me with that slutty, devoted face. When I stroked her hair she closed her eyes and shuddered with pleasure.
"Hnnngh♥"
Just a little praise and she melted. That was how thoroughly obedient she had become.
"I'm about to cum. Catch it all on your face!"
"Okay♥ Cum for me♥ Hurry and cum♥ Nngh♥"
Brrrrrrrt!!
Thick ropes of cum blasted out and painted her face. The heavy smell of semen left her looking dazed and twitching. She was already right on the edge herself.
I can't hold back anymore.
I wanted to fuck her right there. But I couldn't—not with Minjung in the living room.
"Go to the bathroom exactly like that."
"Huh? L-like this?♥"
"I'll follow right behind you."
"O-okay♥"
To reach the bathroom she had to walk right past Minjung's back—completely naked, face covered in cum. The thought alone made her hesitate and get even more excited at the same time. She swallowed hard, stood up on shaky legs, and headed toward the sofa where Minjung sat.
"I-I'm going to take a shower♥"
"Okay~"
Minjung never looked up from the TV. Mom stood for a moment right behind her daughter, breathing hard.
"Haah♥... Haah♥... Haah♥..."
Flushed and panting, she slowly made her way to the bathroom. Just watching her do it made my heart hammer. This was the special rush only a male who had completely conquered a female could feel.
"I've got work to do in my room, so don't bother me."
"Got it~"
Still fully dressed, I casually walked past my little sister, headed upstairs, and went straight to the bathroom. Mom was already waiting for me.
"Haah♥... Haah♥... M-Master♥"
She had already turned around and stuck her ass out as far as it would go. Her pussy was so soaked it glistened, the lips twitching open in invitation.
"Put it in♥♥"
"That desperate to get fucked by your son's cock?"
Smack!!
"Hnnnngh♥ Y-yes♥ I want to get fucked by my son's cock♥"
A clear handprint bloomed on her ass, yet she only kept shaking her hips, begging for more.
"I already fucked you this morning while Minjung wasn't looking."
"This mother in heat still wants to get fucked more♥ Please, Master, fuck Mom's pussy with your cock♥♥"
She spread her own pussy open. Thick juices dripped straight onto the floor.
"I just got off work and I'm tired, so you do the moving."
"Hnn♥... Yes♥"
Thud.
I rested my cock against her ass. A purely male gesture of ownership. Mom immediately started grinding her hips, coaxing and rubbing until the head lined up with her entrance.
Schlick.
"Hnnnngh♥♥"
I sank into her slowly.
"Haah♥ Nngh♥ Aah♥ Hnn♥"
Schlick schlick schlick schlick
She clenched down hard around me and started rocking her hips like she had lost her mind, chasing the pleasure that kept crashing over her.
Smack!!
"You're doing great, Mom."
"Th-thank you♥"
I spanked her again while praising her. Even that made her pussy squeeze tighter with pure joy.
"Hnn♥... So Oppa finally chose her after all♥"
Neither of us noticed the presence just outside the bathroom door as Mom and I lost ourselves in each other.