As dinner ended, Si-woo kept his head down, quietly eating while avoiding eye contact with his sister, until his mother's voice sliced through the awkward silence.
"I'll take a shower first. Si-woo, you handle the dishes and clean up, okay?"
Still flushed from being caught by his sister earlier, he nodded without looking up from his plate.
"Okay."
Seon-mi turned to Se-hee and Se-young.
"You two can help by carrying the dishes."
"Okay, Mom."
They answered in unison as she stood up, shooting a glance at Se-young.
"Are you sleeping in my room again tonight?"
"Yeah, with you, Mom…"
Se-young's voice softened, trailing off shyly in front of her siblings.
"Alright."
Seon-mi responded simply and headed toward the first-floor bathroom to shower.
"Oppa, do you need help with the dishes?"
Se-young, quickly bringing plates to the sink, offered sweetly.
"No, it's fine. I'll finish quickly by myself."
Si-woo declined, desperate to hide his arousal. After Se-hee and Se-young had moved the dishes, they both disappeared into their rooms, leaving him alone.
He felt an crushing shame earlier when his sister caught him staring at their mother's ass, but his hard erection refused to go away. If anything, the shame only seemed to fuel his lust, intensifying the conflict in his mind.
***
After finishing the dishes, Si-woo started toward his room, but the sound of the shower echoing from the first-floor bathroom caught his attention.
The thought of his mother, naked and wet in the shower, made his dick swell even more.
A curtain acted as a screen in front of the bathroom, shielding the view from the living room and kitchen. However, if someone wanted, they could easily find an angle to see inside. Si-woo noticed a purple cloth among the laundry in the basket—it was his mother's recently discarded panties.
Quietly, he pushed aside the curtain and stepped into the laundry area, standing before the basket. Through the frosted glass door of the shower, he could faintly see the silhouette of his mother's body. On a small table beside the basket were his mother's clean panties and a light purple silk pajama set.
After checking that the bathroom and living room were clear, Si-woo took a deep breath. He grabbed his mother's panties from the basket and quietly made his way back to his room, his heart pounding.
Locking the door behind him, he sat on the bed and freed his throbbing cock from his pants, which seemed ready to burst. He pressed it against the spot in the panties where his mother's vagina had been. The soft fabric caressed his entire length.
In his mind, his mother became his slave again. He imagined her naked and crouching on the bathroom floor, her ass raised. He brutally thrust his cock into her pussy, grabbing her hips and pounding away.
He imagined himself thrusting into her from behind, forcing her to arch her back as his cock penetrated her ruthlessly. Each powerful thrust drove her forward, pressing her body against the floor as he held her waist tightly. His movements were relentless, his hips pounding into her without a moment's pause, shaking her with a fiery intensity.
It was as if he sought to ignite something deep within her, his cock sliding ceaselessly from tip to base, filling her entirely. Her moans, once dignified and authoritative, had melted into unrestrained cries of pleasure.
After raping her like that for a while, he let go of her waist and started slapping her ass.
Slap! Slap! Slap!
"Ah!"
His mother's moans, mixed with screams, echoed in his mind. Unable to hold back any longer, Si-woo exploded into the panties.
Feeling the familiar post-masturbation emptiness, Si-woo cleaned the cum-stained panties with a tissue and tossed them in the trash. He checked the lid to make sure it was closed tight to contain the smell, then put on his pants and stuffed the cum-soaked panties into his pocket.
Lying sprawled on the bed, overwhelmed with self-loathing, he closed his eyes, trying to push away the memory of Se-hee's disgusted look during dinner.
Si-woo clutched his head, gritting his teeth in agony.
***
Si-woo must have dozed off because when he woke up, it was nearly 10 PM. Usually, his family would be asleep by now. He felt the panties in his pocket, confirming it wasn't a dream. Realizing he had to return the panties to the laundry, he got up and checked outside before heading quietly to the laundry room.
The clothes had already been moved to the washing machine. He buried his mother's panties among the other laundry, undressed, and went to take a shower. As he washed, he replayed the day's events in his mind—seeing his friend slap his mother's ass, masturbating to thoughts of his mother for the first time, getting caught by his sister, and then stealing his mother's panties.
After the shower, he felt an odd mix of exhaustion and satisfaction, as if he had purged all his animalistic urges. He dried himself off and, thinking everyone was asleep, left the bathroom in just his underwear. That's when he saw his mother carrying Se-young out of the bedroom.
"Si-woo, did you just shower? It's late; you should do it earlier."
"Yeah, Mom… I just finished."
Feeling awkward about being seen in his underwear, Si-woo responded. It wasn't just about the underwear—it was the stark contrast between his fantasies and the reality of his mother.
"Didn't I tell you not to walk around in just your underwear?"
"I didn't think anyone was awake. I'll be more careful."
"You're not a kid anymore, Si-woo. You're in second grade now, so act your age."
He nodded, understanding the change in household rules since he was younger. His family used to be comfortable with just underwear, but as he grew, things changed.
"Are you moving Se-young to her room?"
"Yes. Can you open the door and turn on the light?"
Si-woo opened the door and turned on the light as instructed, watching his mother gently place Se-young on her bed and tuck her in.
"I thought she was sleeping with you tonight?"
"No, she needs to get used to sleeping on her own. I can't sleep well when she insists on keeping the light on."
"By the way, you went to Gyu-ri's place today, right?"
Si-woo panicked slightly, wondering if she somehow knew about what happened with Cheol-jin's mom.
"Yeah, I did."
"I need to borrow a sleeping mask from her. Se-young needs one to sleep with the light on. Can you grab it tomorrow after school? I'll let Gyu-ri know."
"Sure, I'll pick it up after school."
Si-woo replied, feeling a mix of excitement and anxiety about visiting Gyu-ri's house again.
"Phew, Seyoung is getting so big that it's hard to carry her now."
Seon-mi adjusted Se-young's blankets.
"Kids grow up so fast."
Si-woo replied automatically.
His mother laughed, clearly amused by his grown-up tone.
"If someone heard you, they'd think you were her dad. You're only three years older than her!"
The strange feeling of excitement he felt earlier returned. Hearing his mother joke about him being like a father to Se-young made his heart race.
"Anyway, you're her big brother, so take good care of her, okay?" she said, patting Se-young's head.
"Don't worry, Mom. I'll take good care of her."
Si-woo wanted to ease his mother's concerns.
"In that case, why don't you move Se-young to her room at night?"
"Huh?"
"You stay up late anyway, right? By this time, Se-young's usually asleep. You can also turn off the light in the master bedroom. How about it? It's not a hard task, so can you do this for me?"
It was a sudden request in the playful conversation, but it wasn't difficult. In fact, Si-woo thought it was a good chance to see his mother every night.
"Sure, Mom."
Si-woo agreed without hesitation, feeling happy about the opportunity.
From then on, Si-woo started visiting the master bedroom every night to move Se-young.
Si-woo woke up before Se-young came to wake him. It was 7:25 AM—perfect timing. In about five minutes, she'd come upstairs to wake him, and if he didn't get up, she'd return in 10 or 15 minutes to pounce on him with a body slam.
The events of yesterday flooded back like smoke, vivid and inescapable. The intense masturbation session, fueled by thoughts of his mother, wasn't a dream. Se-hee's disgusted look and her heavy sigh confirmed it. The sharp, icy shame stabbing his chest left no room for doubt. Starting today, he had to endure her humiliation.
His cock stood hard with morning wood. Se-young would be here soon, and if he didn't do something, she'd see it. He was still in his underwear, having fallen asleep after showering and being caught by his mother in just his briefs. He hadn't bothered to get dressed.
"Whatever!"
Morning wood was natural, so why should he bother hiding it from his little sister, especially when she always barged into his room without knocking? Deciding to leave it as it was, he went a step further—he'd flaunt it. His cock wasn't just impressive among his peers; it was massive even by global standards, though he never quite understood their awe.
Tossing off the blanket, he adjusted himself, ensuring his hard-on was prominently visible for when she walked in. Satisfied with the arrangement, he draped an arm over his face and pretended to sleep.
Se-young would undoubtedly be embarrassed by the sight of his impressive erection. She'd retreat immediately, abandoning her mission to wake him up, and for once, he'd triumph over her morning tyranny.
Minutes passed as he lay still, waiting. Then self-doubt crept in. What kind of brother was he to even consider this? Was he really about to let his little sister see him like this? The thought churned his stomach.
He never thought of Se-young as annoying, yet here he was, about to expose her to something so inappropriate. His cock, practically a tool of sexual pleasure, stood fully erect, and the obscenity of the idea struck him like a bolt of shame. His erection throbbed painfully, fueled by an intrusive thought he couldn't shake, even as guilt and embarrassment surged through him.
'What if this becomes an irremediable dark history of my life?'
'What if she tells Mom?'
'Should I stop now?'
As these thoughts raced through his mind, the door to his room creaked open.
"Oppa, it's morning. Wake up~ Time for breakfast and school~"
Se-young's cheerful voice echoed in the room.
"If you sleep in, Mom will be mad."
Se-young came closer, whether she saw his cock or not. Si-woo felt a mix of anticipation and dread as his little sister approached.
"Oppa~ Oppa?"
She gently shook his shoulder and chest, causing his cock to sway. He kept pretending to sleep. She stopped shaking him and stood by the bed, seemingly looking down at him. He hoped she'd leave soon.
She leaned down, bringing her face close to his ear, and whispered.
"Oppa~ you pervert~"
He jolted awake mentally but couldn't move. Did she really say that? Was he dreaming again?
She straightened up and spoke brightly.
"Oppa, you have to wake up. If you're still sleeping when I come back in 10 minutes, I'll bother you again like yesterday~ Got it?"
She left the room. He opened his eyes and got dressed.
"It was a dream, right? Se-young wouldn't say that."
Si-woo wondered to reassure himself.
***
After waiting for his morning wood to subside, Si-woo washed up briefly and went downstairs. His mother and Se-young were at the dining table.
"Si-woo, you're up! You woke up early today."
Seon-mi smiled at him while eating.
"Yeah, Mom. Did you sleep well? I slept like a log, so I woke up easily."
Si-woo replied, making it clear to Mom that he remembered nothing unusual from when Se-young woke him up.
"Oppa, come sit! Hehe, today's side dish is your favorite, braised beef."
Se-young welcomed him as usual, despite having seen her brother's erection earlier.
"Really? Did you help Mom with the cooking again?"
Si-woo responded, pretending everything was normal and acknowledging Se-young's help in the kitchen.
"Yep! I'm learning to cook from Mom so I can make your favorite dishes later." She said something sweet again. Considering their earlier interaction, their conversation now felt too smooth and kind.
As Si-woo was about to sit down, Se-hee came down from the second floor. She was wearing a white spaghetti strap tank top that exposed a lot of cleavage and tight pink training hot pants. Her big breasts, likely inherited from their mother, were well-shaped and prominent, barely covered by the white tank top. The pink hot pants clung to her ample hips, making her look incredibly sexy.
The sight of Se-hee's revealing outfit made Si-woo feel a rush of blood to his dick. He quickly pulled his chair closer to the table to hide his erection from his family.
"Unni, you look so pretty, like a model! Hehe."
Se-young complimented Se-hee.
"Thanks! Se-young has good taste in fashion."
Se-hee was pleased with the compliment.
"Where did you get that outfit?"
"Mom, isn't it cute? I bought it when I went shopping with friends. Hehe." Se-hee boasted, but Mom didn't look thrilled.
"Uh… yeah, but isn't it too thin for now?"
"It's fine, I'll just wear it at home."
"Well… okay, it suits you."
Seon-mi seemed to hesitate, then walked to the kitchen to serve more rice. Si-woo averted his gaze from Se-hee and, unconsciously, glanced at Mom's backside, only to quickly lower his head.
He felt Se-hee's gaze as she sat down across from him. He looked up cautiously and saw her smirk.
"Hah-"
"What?"
Si-woo snapped at her, feeling indignant.
"Nothing."
"Why are you laughing?"
"You had your head down, so I wondered if you had a stomachache." She replied with an evil grin.
"If you're in pain, why not ask Mom to rub your belly?"
His face burned with embarrassment, and he stammered, "Wh-What are you talking about? I'm not a kid."
"Right, you're not a kid anymore." Her cryptic response left him at a loss for words, staring at her.
"Si-woo, does your stomach hurt?" Mom returned, concerned, and put a hand on his shoulder.
"No, it's nothing. She's just saying weird stuff." He said, trying to hide his erection by pulling his chair closer to the table.
"Jeez! Stop messing with me, unni!"
"Ha-aah~"
She stretched, deliberately making her chest more prominent by interlacing her fingers behind her head and arching her back. The tank top strained, barely covering her nipples, revealing almost everything. Then she bent forward, pushing her breasts together to accentuate her cleavage.
"What? You called for me?"
Si-woo's face flushed, and he avoided her gaze. She laughed, triumphant.
"Haha!! You look so ridiculous right now! You should've known better than to mess with me in the first place!!"
Si-woo was fuming. He couldn't believe Se-hee would go to such lengths to embarrass him in front of their family. But as much as he wanted to retaliate, he knew better than to pick a fight with his older sister.
"What's going on? Se-hee, stop teasing your brother! Si-woo, hurry up and eat! And you need to change after breakfast, Se-hee." Seeing Si-woo bullied by Se-hee, Mom stepped in to mediate.
From this point on, Seon-mi began to struggle with how to perceive Se-hee's sexual teasing and jokes directed at Si-woo.
"I called Gyu-ri. She said she'll be home in the afternoon, so you can swing by and pick up the sleeping mask after your class."
Seon-Mi called out to Si-woo as he prepared to leave.
"Got it! I just need to grab the mask. I'm going!"
"Yes. Take care~!"
With Seon-Mi's cheerful goodbye, Si-woo left the house. At school, he noticed Seul-gi and Cheol-jin arguing again, their voices carrying across the hallway.
"It's like Parvati and Pai. Even if their personalities are split, they're still the same body! So if you did it with one, it's like doing it with both!"
"That's as pointless as trying to distinguish the taste between left and right pork belly."
"No! It's as crucial as distinguishing between men and women! Even if the taste is similar, a pig is a pig, and a human is a human!"
"Yeah, yeah, very broad yet narrow-minded thinking."
"Ugh, people like you will never get it!"
Seul-gi rolled her eyes as Cheol-jin huffed in frustration. She made a dismissive gesture, her palm raised, while Si-woo, standing nearby, found their exchange both amusing and utterly baffling.
***
During lunch, Si-woo was at the cafeteria, chatting with Cheol-jin, when he remembered his errand.
"My mom wants me to pick up a blindfold from your place. She said she told your mother. Can you come with me?"
"Sorry, I have something after class. You'll have to go alone."
Cheol-jin genuinely looked sorry he couldn't join; something important had come up that he couldn't postpone. That's not like him.
"I'll make it up to you with something instead. Check this out."
Cheol-jin then pulled out his phone, grinning mischievously, and sent Si-woo a photo.
"What is it this time?"
Expecting another piece of rare adult content or something similar, Si-woo was shocked when he saw the photo. It was a picture of Gyu-ri's butt, marked with red handprints, taken in the kitchen. The background was Cheol-jin's kitchen. It was indeed Gyu-ri. Her ass had multiple layers of red handprints, swollen and bruised. Between the plump, white cheeks, a tiny black panty barely covered anything.
Si-woo spoke to Cheol-jin, a mix of surprise, admiration, and envy in his voice. "Is this really okay?"
Si-woo felt both impressed and concerned.
Cheol-jin chuckled. "This was just this morning. My mom is a true masochist. She gets more excited the rougher I get. She stood still while I lifted her skirt and took pictures."
Si-woo could almost imagine Gyu-ri's expression from Cheol-jin's description.
"And it's surreal and scary how she still treats me normally afterward… Hmm? She could've just given me the mask this morning, and I could have handed it to you at school. Why make you come all the way to my place?"
Cheol-jin trailed off, mumbling to himself.
Si-woo thought about it for a moment. Cheol-jin had a point. It would've been much easier if he had just brought the mask to school.
"Whatever… just see what happens. It might be interesting."
Cheol-jin pointed at his phone.
Si-woo's heart raced with a mix of fear and anticipation as he thought about the photo.
***
After class, Si-woo headed to Cheol-jin's house alone. When he rang the doorbell, Gyu-ri welcomed him.
"Welcome~ Come in, Si-woo."
Gyu-ri was wearing a tight pink tank top and gray leggings, likely having just finished yoga. Her curvy, voluptuous figure was clearly outlined, and Si-woo blushed slightly.
"Hey, I'm here to pick up the blindfold for Mom."
Gyu-ri smiled warmly. "Sure, I've got it ready. But come in and have a drink first."
In the living room, a yoga mat was spread out, and a small shopping bag sat on the kitchen table. Inside was a purple silk blindfold. Gyu-ri went to the fridge, took out some orange juice, and poured a glass for Si-woo. She handed it to him with care.
"About yesterday…"
"Huh?"
"Cheol-jin can be quite a handful…"
"Oh, that."
Si-woo pretended not to care.
"Sometimes, he treats me like I'm a toy. Can you believe that? Did he think of his mother as a toy or something? I've tried scolding him, but it doesn't work. It's embarrassing to admit, but having my son spank me in front of you was mortifying," Gyu-ri tried to explain the situation from yesterday.
Si-woo, sensing that this was why he was there, reassured her. "Don't worry. At first, I was shocked, but then I thought it was kind of… cool. I was actually a bit jealous."
"…what? Jealous?"
"Yeah, because you guys seem so close. I can't imagine joking around like that with my mom."
Gyu-ri looked relieved but puzzled.
"Ah~ I get it now. If you think of it as playing around with friends your own age, it does seem like a close, mother-son relationship. Still, it was a bit embarrassing to do that in front of you."
"Don't worry about it. Honestly, I think it's nice to see something like that."
Gyu-ri nodded with a slightly troubled expression.
"But you haven't told anyone else, right? I appreciate your discretion, Si-woo, but if word gets out, I'd be too embarrassed to show my face around here… Let's keep this just between us, alright? I'd be mortified if anyone else found out."
Si-woo couldn't help but recall the photo of Gyu-ri's marked ass that he had received at school. Her plump cheeks were reddened with palm prints. Cheol-jin had mentioned that Gyu-ri had masochistic tendencies, and seeing those marks seemed to confirm it. The way she got spanked by her son and had her skirt pulled up to take pictures, trembling with excitement, wasn't just idle talk.
Si-woo thought to himself, maybe she actually enjoyed it and loved it very much.
"I won't tell anyone. Promise."
"Thanks, Si-woo. Are you hungry? Want some leftover cake?"
"No, thanks. Were you working out?"
"Yeah, I've started yoga. I felt like I was getting sluggish staying at home."
"I see… That's why you have such a good figure."
"Really? You think I have a good figure?"
"Yes, your waist is very slim, and your ass—I mean, hips are big and pretty… well, I can see why Cheol-jin likes spanking them."
"Uh… thank you…" Gyu-ri said, slightly flustered.
"Can you show me something?"
"What… what do you want to see?"
"Your yoga."
"Oh—yoga? Right! Yoga… You want to see me do yoga?"
"Yes."
"Well, it's a bit embarrassing…"
"It's fine. I've already seen you get spanked. Besides, I promise to keep it secret."
After a moment, Gyu-ri nodded. "Alright, I'll show you the bat pose."
Gyu-ri stretched her legs sideways and bent her upper body forward, revealing the deep cleavage between her tank top.
"This is called the bat pose. It helps to make the pelvis flexible and strengthens the inner thigh muscles and ligaments. Close your eyes and feel the muscles around your pelvis, lumbar spine, and spine changing as you lean forward," she explained.
Her eyes were closed, and her face was slightly lowered, turning a bright shade of red.
"You're really flexible. It's beautiful."
Si-woo complimented.
"Uh, thanks," she replied, slightly raising her head and opening her eyes to smile at him. The sight of her flushed face and the deep cleavage made Si-woo's cock gradually stiffen.
"You bend forward until you feel the muscles stretching, then come back up. But since I'm just showing you briefly, I'll move on to another pose," she continued.
"Okay, sounds good."
She adjusted her posture and closed her eyes again. Kneeling down and raising her thighs, she bent her upper body backward, holding her ankles with her hands.
"This is called the camel pose. It strengthens the spine, hip joints, and neck muscles. It's also said to firm up the buttocks."
Her large breasts pressed beautifully against the tank top as she bent backward.
"Wow, that's beautiful. I've always thought you had an amazing body," Si-woo said, genuinely impressed.
"Really? Thank you for saying that," she responded, blushing even more.
"Uh, can I take some photos of you doing yoga?" Si-woo asked, summoning his courage.
"Photos? Why?"
"Your body is so beautiful; I'd love to capture it in photos. Is that okay?"
After a brief pause, she replied, "Sure, you can take pictures. But please, don't show them to anyone else. It's a bit embarrassing."
"Don't worry, I won't even tell Cheol-jin," Si-woo assured her as he stood up and started taking pictures with his smartphone.
At first, he took full-body shots, then gradually focused on specific areas like her chest, buttocks, thighs, calves, neck, collarbone, belly, and even the mound at the front. The sound of the smartphone camera seemed to resonate through her entire body.
Still blushing and with her eyes closed, she maintained her pose for a while. After taking several photos, Si-woo checked them and asked in a trembling voice, "Is this enough?"
"Yes, that should be good," Si-woo replied, sounding satisfied. "Could you show me another pose?"
She adjusted her posture and took a deep breath. "Alright, I'll show you the cat pose next."
She kneeled down, placed her hands on the floor, and positioned herself on all fours. Feeling that further explanations were unnecessary, she silently assumed the pose, arching her back downward, making her hips appear even more provocative. Si-woo felt his breath catch. She alternated between arching her back downward and raising it upward, creating a beautiful curve.
Si-woo's erection was now undeniable, pointing toward the ceiling.
"Could you hold the downward arch for a bit longer? It looks really beautiful," Si-woo requested.
"Like this?"
Gyu-ri followed his instructions and sought his confirmation.
"Yes, that's perfect. Just a bit more like this."
Si-woo approached her, pressing gently on her lower back to push her down further. He felt her body shudder under his touch. Then he moved closer to her hips and started taking explicit photos.
"Uh, Si-woo?"
"Yes?"
"Can you send me those photos later? I'm curious about how they turned out."
Si-woo, fearing she might stop him, quickly agreed.
"Sure, I will."
Despite taking overtly explicit photos, she didn't stop him. Instead, she asked him to send them to her later, boosting his confidence.
"Can you lower your upper body to the floor, keep your knees where they are, and raise your hips a bit more?"
Si-woo's tone carried a quiet insistence, his request clear. Obediently, she lowered herself as instructed, her blush deepening as she complied without hesitation.
"Like this?"
She completely lowered her upper body, resting her head on her folded arms on the floor. Si-woo placed one hand on her hip and pressed down on her back with the other, feeling her body tremble even more.
"Are you okay? Your body is shaking."
"I'm fine," she replied with a breathy, shaky voice.
Si-woo then boldly smacked her ass with a loud slap, then spoke to her.
"Let's lift your hips a bit more."
She trembled but tried to raise her hips higher. Si-woo took several photos with one hand on her hip. She seemed to be trembling more intensely. He considered spanking her again but hesitated. His heart was pounding.
'What if she gets mad? What if she tells my mom? It'd be over for me.'
"Is this enough?"
Gyu-ri still maintained the pose.
"Yes, that's perfect. Thank you."
Si-woo suddenly felt nervous and stepped back. She got up, breathing heavily and fanning her red face with her hand, smiling. Si-woo quickly sat down, trying to hide his erection. She opened the fridge, poured herself a glass of water, and drank it. After his erection subsided a bit, Si-woo spoke up.
"I should go now."
"Already?"
"Yeah."
"Alright. Tell your mom I said thanks for the eye mask and stuff."
"Will do. Thanks for today."
"Sure, I had fun too. Send me those photos later, okay? You have my number, right?"
Watching her see him off with a smile, Si-woo felt a wave of regret for not spanking her harder. 'What a coward,' he thought to himself.
He crouched down to put on his shoes, feeling a surge of determination. He couldn't leave without one last act.
"Aunt Gyu-ri."
"Yes?"
"Turn around for a moment."
"Okay…"
Gyu-ri turned around without protest, her face blushing again. Si-woo stood up and placed his hand on her buttocks, then slapped them hard.
Whack!
"Ah!"
She flinched, letting out a gasp. Without another word, Si-woo fled the house, his heart pounding. 'How am I going to face her now?' he wondered, though he had a feeling she wouldn't mind.
Later, Si-woo's phone buzzed with a message.
'Send me the photos?'
It was Gyu-ri.
Si-woo sent her the photos one by one, hesitating a bit before including the last one: a close-up of her buttocks in just her pants, which he had taken earlier. After a long silence, her message came through.
'Thanks! Come again soon!!'
On the way home from Cheol-jin's house, Si-woo found himself near the park's restroom, where a group of high school girls were gathered. A quick glance revealed they were in school uniforms, casually smoking cigarettes—a sight that was anything but normal. Si-woo tried to walk past them quickly and unobtrusively, hoping to avoid any interaction. However, a familiar voice called out to him.
"Hey, Yoo Si-woo! Come here!"
It was Se-hee, his older sister. She was heavily made up, with a lit cigarette in one hand, squatting in a way that caused her skirt to ride up, revealing her smooth thighs.
"Huh? Noona, what are you doing here? Are these your friends?"
Feeling a strange sense of relief, Si-woo tried to sound as friendly as possible.
"Hello, Si-woo~"
Another soft and warm voice chimed in. It was Shin-bi, Se-hee's best friend and the older sister of Shin Seul-gi, the school's well-known perverted beauty.
"Oh, Shin-bi noona? You're here too?"
Shin-bi had a mysterious and exotic allure. Her short hair framed a beautiful face, reaching just below her ears. She had a petite yet curvaceous figure with ample, round breasts and wide hips. She definitely had the full package of a woman. Until middle school, she had played sports with Se-hee. When Se-hee quit, Shin-bi seemed to follow suit. Regardless of their reasons, their close friendship was undeniable. Shin-bi was the one who told Si-woo why Se-hee quit track.
She was standing next to Se-hee, her school skirt folded up like a miniskirt. Her plump yet shapely thighs had a different kind of allure compared to Se-hee's.
"Hi~ you must be Se-hee's brother, Si-woo, right? Wow, you're as handsome as she said. You just came back from school?"
Three more girls stood beside Se-hee and Shin-bi. They all had a slightly rebellious look but were equally stunning. Their makeup was heavy, and their skirts were short. One of them even had her school blouse unbuttoned, intentionally showcasing her bra. Despite their tough appearances, their voices were soft and kind.
"Uh, hello. I'm Yoo Si-woo, Se-hee's brother."
Si-woo bowed politely to the unfamiliar girls. Then he turned his attention to something that had been bothering him since he arrived—the cigarette between Se-hee's fingers.
"What are you doing, Noona? Smoking?"
He was surprised, having never seen her smoke before, but tried to stay calm.
"Can't you tell? Want one?"
"No, thanks."
Si-woo waved his hand to decline.
"He's cute. Se-hee, you're lucky to have such an adorable brother. I wish I had one too."
The girl with the unbuttoned blouse smiled at Se-hee.
"What's the point? He never listens! And if you tell Mom about this, I'll kill you! Got it?"
Se-hee glared at her little brother, her voice threatening.
"Whatever, handle it yourself. I don't care."
Si-woo retorted, feeling hurt by her behavior in front of her friends.
"I'm serious. Got it?"
"Yeah, yeah, I got it!"
Si-woo snapped back.
"Oh, by the way, I almost forgot. Mom mentioned she's going out with Se-young today and won't be back until late."
Se-hee suddenly recalled, sharing the news with Si-woo.
"Mom and Se-young? Where are they going?"
"Ask Mom about it later when she gets back. More importantly, we have to make dinner ourselves. Shin-bi and I will be home in about 30 minutes, so make sure to cook some ramen, okay?"
"I'm tired! I'm going to sleep as soon as I get home, so you cook it yourself."
Si-woo's frustration with Se-hee's attitude in front of her friends fueled his rebellious response.
"You never listen! Just get lost then!"
"If you hadn't called me, I would have left already!"
"Always talking back, huh? Just get out of here!"
Their typical sibling argument ended with harsh words, but their bond was still evident to those watching.
"Leaving already?"
"Stay and chat a bit longer."
"Take care; see you later~"
"See you later, Si-woo."
Shin-bi gave him a sympathetic smile. Si-woo bowed to the girls and headed home.
***
After arriving home, Si-woo didn't bother changing his clothes and flopped onto his bed, replaying the recent scene with Gyu-ri in his mind. He had finally managed to spank Gyu-ri's ass today. After sending the photos he got from Cheol-jin, he even received a thank-you message from her, suggesting there might be possibilities for the future between them.
Kneeling with her skirt pulled up, he smacked Gyu-ri's ass with abandon.
Smack.
Smack.
Thwack.
The sharp sound of flesh being struck filled the hallway, accompanied by her loud moans.
"Aahhh~"
He fastened a red collar around her neck and bound her hands behind her with a rope. Pressing her face into the floor, he struck her ass once more, shouting, "You bitch, Se-hee!!!"
Slap!!!
Wait, something felt off.
"Se-hee? Se-hee noona?"
Si-woo stared at the naked woman lying on the floor, her face pressed into the ground. A wave of discomfort washed over him as he realized who it was. The woman suddenly turned her head and shouted, "Hey, Yoo Si-woo! Are you going to untie me or not? I'll kill you!"
Bound and naked on the floor, the woman was none other than Se-hee. Si-woo's heart nearly stopped in shock.
"Why are you there like that, noona?!"
"I'm telling Mom everything! You're gonna get your ass kicked out of the house!"
Her burning eyes locked on him, anger dripping from every word.
"Noona, please! I didn't mean it! I'm sorry, please don't kill me!"
Si-woo reached out to grab her, but she twisted away. His arms flailed in empty space.
"Noona~~"
Si-woo cried out in his dream, but all that escaped his lips were muffled groans.
"Ugh… Ugh…"
"Si-woo, Si-woo? Are you okay?"
Shin-bi's voice pulled him from his sleep as she shook him gently, her concern cutting through the fog of his mind.
"What kind of dream were you having to make such strange noises? Wake up, I made ramen. Let's eat."
His eyes fluttered open to find Shin-bi smiling sweetly at him, her lips moving with a warmth that made the bizarre nightmare feel even more surreal.
"Come on, get up, Si-woo. I made ramen. Aren't you hungry?"
Still dazed, he followed her downstairs to the living room.
***
On the first floor, Se-hee was practicing dance moves while watching an online video. She was working on the basic steps of breakdancing. Seeing Se-hee noona engrossed in her dance practice, Shin-bi noona put a finger to her lips and motioned for Si-woo to stay quiet. Then, mouthing "Watch this," she stealthily approached Se-hee noona from behind.
Counting down with her fingers, one, two, three, Shin-bi lifted Se-hee's skirt.
"Hey! What are you doing?!"
Se-hee was startled, grabbing her skirt and looking around. Then, she suddenly charged at Si-woo, delivering a low kick.
"Why are you attacking me? I didn't do anything!"
Si-woo protested, feeling wronged.
"You saw it, you jerk!"
Se-hee yelled, her eyes fierce. Indeed, Si-woo had seen it.
The sight of Se-hee's black sporty panties, damp with sweat, clung to her peach round ass. On the inside of her left thigh, there was a calligraphic "B S" design in black.
After Se-hee finished scolding everyone, they all sat down at the dining table to eat the ramen that Shin-bi had cooked.
"We all made it together today," Shin-bi said in her sweet, gentle voice.
From what Si-woo had heard, the tattoo Se-hee got was all the rage among high-class schoolgirls—something called a friendship tattoo. They would etch the name of a crush or a celebrity they liked on their thighs, designed in a stylish English font. Since they got it done on the upper inner thigh, right under the groin, there was no risk of getting caught at school unless they lifted their skirts, like earlier.
"We got a group discount, being fancy schoolgirls and all. Se-hee and I chose the names of our crushes. They said it's even cheaper if you do it as a couple," Shin-bi explained, her calm voice slipping into an accent that made everyone relax as she went into unnecessary detail.
Si-woo nodded while slurping his ramen. According to Shin-bi, both she and Se-hee had someone they liked. Whether they were actually dating these initials or just harboring feelings was unclear, but Si-woo didn't feel like asking.
"Should I show you mine?" Shin-bi asked Si-woo, turning her knees toward him.
Si-woo choked on his ramen at the sudden question. "Cough… Gasp… What… What?"
"Don't you want to see? Aren't you curious?" Shin-bi gently lifted the top of her skirt with both hands, raising it bit by bit. Her already short school uniform skirt inched up over her plump thighs toward her hips.
Si-woo swallowed hard, staring at Shin-bi's thighs.
Suddenly, as the skirt kept rising, it stopped, and Shin-bi, with a mischievous tone, said, "Got a bit pervy there, huh?" Then, she cheekily flipped her skirt back down over her thighs. "Thought I was really going to show you, huh? Puhaha."
Shin-bi's teasing voice and laughter echoed through the house. Si-woo was momentarily flustered.
"Your brother is too cute. Did you see him blush?" Shin-bi said to Se-hee with a mischievous expression. Se-hee, sitting across, silently watched the scene with a look of pity.
"Did you expect that?" Shin-bi teased Si-woo relentlessly, hitting right on the mark.
"Argh~ No!!!" Si-woo, frustrated that even Shin-bi was teasing him, responded with annoyance.
Shin-bi burst into laughter, holding her belly.
While eating ramen, Si-woo tried to regain his pride. "Guys keep changing; you sisters will definitely regret it later," he said. "Or just choose guys with the same initials then. Maybe changing the names of the guys you date could be a strategy."
Each time, Shin-bi's soothing responses of "Yeah, that would work…" didn't really help his cause.
"But Se-hee, if Mom finds out about that, won't it be a huge problem?" Si-woo asked Se-hee seriously, showing his concern.
"If you just keep your mouth shut, there won't be any problem," Se-hee responded coldly to Si-woo.
"Aren't you going to avoid going to the bathhouse or swimming pool with Mom from now on?" Si-woo, still concerned, spoke to Se-hee.
"So just keep your mouth shut, and there won't be any problem, okay?" Se-hee repeated, her tone still cold.
"Argh, do you think I'd tell Mom about something like that?!" Si-woo started to get annoyed by his sister's attitude. He decided to stop talking back to her. It seemed like the joke he made yesterday morning really struck a nerve with Se-hee, who was quite angry about it.
After their father passed away, amidst the family's distress, Se-hee had quit athletics despite excelling. Seeing her physique change during that challenging time had been difficult. Although Shin-bi had heard about it, such a reason might have been too embarrassing for Se-hee to share with the family. Se-hee had never considered athletics as a career, so she wasn't particularly troubled by quitting. However, the fact that she couldn't confidently reveal the reason, knowing it would cause concern, was what really upset her. Si-woo had touched on that sensitive part.
Watching this, Shin-bi, perhaps feeling pity for Si-woo, started teasing him again.
"Si-woo, do you have a girlfriend?"
"No, I don't."
"Ever had one before?"
"No."
"Ever kissed?"
"I've never dated; how would I have kissed?" Si-woo said, embarrassed.
"Can't you kiss without dating?"
"I said no!!" Si-woo was a bit shocked. Kissing without dating isn't wrong, but isn't it usually something couples do? He thought to himself.
"Aren't you interested in that kind of stuff?" Shin-bi's face got a bit closer to Si-woo.
"It's not that I'm not interested, but it's weird to answer that," Si-woo, unable to meet her eyes, grew increasingly embarrassed.
"Should I teach you how to kiss?" Shin-bi pouted her lips, glossy with pink lipstick, and stared straight at him.
Si-woo froze, unable to say anything, just staring at Shin-bi's lips.
"Ah, you thought about it for a second, right? Kissing me." Shin-bi's voice turned playful again.
"Ah, enough!! What are you talking about?"
"Si-woo is really cute!" Shin-bi giggled, holding her stomach again. As Si-woo continued to be teased by Shin-bi, he just ate his ramen and listened to the conversation between Se-hee and Shin-bi.
"Ah, dancing is tough too. I sweat a lot, and it's hard using muscles I haven't used before. I shouldn't have approached it so lightly," Se-hee said, talking about the dance practice they had earlier.
"Yeah, right, it's definitely a hard dance for beginners," Shin-bi agreed.
"Should I really keep doing it? Are you okay with it?" Se-hee glanced at Si-woo cautiously before asking Shin-bi.
"I think I can do it if I'm with you," Shin-bi cautiously answered.
"Yeah, I think I can do it if we're together too. I've decided to slowly respond to So-ra, so let's think about it a little more," Se-hee said, watching Si-woo's reactions and seemingly hiding something.
"What are you guys talking about? Diet?" Si-woo asked, suddenly curious.
"You don't need to know," Se-hee cut off Si-woo's question with a cold tone.
"What the heck? What are you talking about, Shin-bi? Huh?" Realizing he wouldn't get an answer from Se-hee, Si-woo directly asked Shin-bi.
Shin-bi, still watching Se-hee, said, "Sorry, Si-woo, I wouldn't mind telling you, but Se-hee would really get mad."