Chapter Index

    -I’m sorry, sis.

    -I promised to have dinner with my friends on my birthday.

    The day before Chaewon’s birthday.

    Just like last year, Su-ah sent a message on Chae-won’s birthday asking, “Where do you want to go on a date tomorrow?” and received this reply.

    “… We can’t be friends.”

    She suppressed the urge to send a message saying, ‘Aside from me and Da-yoon, aren’t you close with anyone?’

    [Yeah? Have fun with your friends.]

    [Emoticon of a female student looking sad]

    -I’m really, really, really sorry!

    -Let’s go play together next time!

    -An emoticon of a rabbit being cute

    “Sigh… .”

    Rather than feeling regretful about being rejected by her lover, her heart felt heavy because of her intuition that Chaewon was lying.

    The statement, ‘I decided to eat out with my friends’ is clearly a lie.

    It’s probably not your friend, it’s Kim Si-hyuk.

    And we won’t just eat rice, we’ll mix our bodies too. It’ll be romantic and hearty since it’s my birthday.

    Lying in bed, she began to suspect that Chaewon had abandoned her and chosen Sihyuk, and felt ashamed of herself for suspecting him.

    I became depressed because it felt like my plan to seduce Shihyuk and make him let his guard down almost failed.

    “No, no. Maybe you made a friend. You joined a club, and your exams are over, so you can hang out together. Yeah, trust me. Trust me.”

    She told herself so, but ominous images weighed on her mind like sticky tar.

    The thought of Chae-won, who had rejected his date request, meeting Si-hyuk kept playing in her head.

    Chaewon, who came dressed up in a fancy outfit because it was her birthday, links arms with Shihyuk like a couple and has a great time at the aquarium, seeing sharks and cute animals like turtles.

    After having an elegant dinner at an expensive place, the two naturally head to the hotel they had reserved as the mood improves.

    Chae-won, who is hugged by Shi-hyuk, says, ““Treat yourself as much as you want tonight… .”,” and Shi-hyuk roughly takes off her clothes, saying, ““I’ll make sure you don’t think of Su-ah.”.”

    Shihyuk, who was already rubbing his penis against the wet entrance, eventually… .

    -Creak

    “Heuheu… ♡”

    Sua, who had taken off her outerwear and panties and was wearing only a bra, lay down on the bed and began to masturbate naturally.

    The thought of Shi-hyuk and Chae-won having sex was really unpleasant, upsetting, and sad… but at the same time, it felt dizzyingly pleasurable.

    The first day I had an orgasm while masturbating with disgusting NTR fantasies, I cried, but as the days passed, the tears decreased and the love juice increased.

    Even though I don’t want to admit it, I have no choice but to admit it because my body gets excited every time I imagine it.

    And from the moment she acknowledged that, Su-ah’s masturbation routine became fixed on sex between Si-hyuk and Chae-won, or Si-hyuk and Da-yoon.

    Su-ah gently rubbed her vagina, wetting her finger with the fluid she had gotten, then slowly brought her index finger into her asshole.

    “Haa, haa… .”

    Her mind is barely holding on to Shihyuk’s thorough training, but her body is already under control.

    She now felt greater pleasure from asshole sex than from vaginal sex, and the more she had sex with Shihyuk, the less pleasure she felt from masturbation.

    I masturbated while worrying that one day I would become a pervert who couldn’t go anywhere unless it was Sihyuk.

    It was thrilling because I felt a sense of depravity because it was unusual to masturbate with the back of my penis instead of the front.

    In the past, I would masturbate by gently rubbing the folds of my anus with my fingers, but as time passed, I became more daring and now I insert my fingers directly.

    -Tzuyu

    Her well-kept, clean anus began to swallow her slender fingers.

    I only put it in with my love juice without applying any gel, so it was sticky, but even that felt pleasurable.

    Su-ah, who had been inserting her finger slowly and steadily, soon inserted her index finger all the way in.

    She continued masturbating by lightly stroking her clitoris with her fingers.

    In her imagination, Chaewon smiled at her and accepted Sihyuk’s offer.

    “Ah, ugh♡ Chaewon, no…! Ugh, no, don’t do that… !”

    She was tied to a chair helplessly and could do nothing but masturbate while watching the sex scenes between Shi-hyuk and Chae-won.

    -Crunch crouch crouch ♡

    As the fingering got faster, Chaewon and Sihyuk’s sex also got rougher.

    Chaewon let out an animalistic moan and kissed Shihyuk with a vulgar expression she had never shown to Suah.

    “You just want to break up with Su-ah and date me?”

    “Yeah, yeah♡ I want to live my whole life as a sleeping slave…! I like a man’s sleeping much more than a woman’s sleeping♡”

    As Su-ah was approaching her climax, the doorknob suddenly shook.

    -Bam!

    “What the?!”

    Sua pulled her finger out of her anus in surprise and spurted out her fluids with an orgasm that was much greater than when she put it in.

    Su-ah, who had locked the door while masturbating, tried to get dressed quickly, but Si-hyuk opened the door faster than she could.

    -Crash, squeak!

    “Oh, what? Were you masturbating?”

    “Ah, uh… . Yes… .”

    Su-ah, who barely covered her eyes with her legs, nodded with a blush on her face.

    I knew Shihyuk had the key, but I didn’t expect him to come in.

    “Which hole did you use? Front? Back?”

    Si-hyuk approached the bed, undressing, and took off Su-ah’s bra, leaving her naked.

    “Back… I did it.”

    She bit her lip in shame, and that sight seemed even more obscene to Shihyuk.

    Shihyuk gently stroked Suah’s nipple, cupped her cheek, and then kissed her lips.

    The deep kiss, where he sucked his lips and inserted his tongue, seemed rough, but had a strange softness to it.

    He looked at Su-ah with unwavering eyes and kissed her sweetly.

    “Sigh, shoo, wait a minute, mom, whoosh♡ in the next room, whoa♡”

    Su-ah moaned sweetly and wiggled her pelvis as the thick tongue swirled around her as if it were intoxicating her.

    In the old days when I didn’t know much about kissing, I tried to win over Shihyuk with a kiss.

    But one day, Si-hyuk grabbed her and kissed her all day, and after that, she became a total mess, and she stopped resisting when kissing Si-hyuk.

    As if they were long-time lovers, Soo-ah unconsciously spread her legs slightly as they kissed naturally.

    Shihyuk heated up the atmosphere by patting her soaking wet vagina with one hand.

    She mixed her tongue and swallowed the saliva that Shihyuk was handing her as if it was delicious. Then, when Shihyuk stroked the anus where he had just been masturbating, she spurted out her love juice.

    Sihyuk, who knew Suah well, gently scratched her anal folds with his fingernails and stuck his tongue out.

    Then, Su-ah stopped kissing and gasped, as if the pleasure was quite great.

    She felt her body melt as she felt the amount of love juice leaking out was incomparable to that when she masturbated.

    -Tsugut♡

    Shihyuk explored her lips while inserting his index finger, which was much thicker than Suah’s, into her asshole.

    In that kiss of biting, sucking, and licking, Su-ah felt a thrilling pleasure rather than pain, and her mind became confused due to Si-hyuk’s anal caress.

    As the man’s thick finger entered the hole where it was supposed to go, my lower abdomen automatically tightened.

    Sihyuk enjoyed such a cute reaction and rummaged around inside, pressing the upper part that Sooah felt particularly good about.

    “Ugh, woo, huuu♡ Swish, slap, hoosh♡ Go, goaah… !”

    Su-ah’s scream-like moans filled the room as she orgasmed throughout her entire body.

    Su-ah, who was holding the bed tightly, climaxed while being caressed by Si-hyuk.

    The pleasure of her hair turning white was one of the best moments Su-ah could feel.

    “Ah, ugh, ugh, huh, huh, uh… .”

    Every time Shihyuk snapped his fingers, the viscous liquid spurted out, creating a spray.

    The orgasm juice that spurted out from such a narrow vagina soaked the bedsheets.

    Su-ah opened her eyes and met Si-hyuk’s eyes, her legs shaking with the pleasure she couldn’t deny.

    Her gaze contained the sexual desire of a pervert who yearned for more pleasure.

    Su-ah, who had promised herself to make Shi-hyeok let his guard down, suddenly found herself truly wanting sex.

    The front and back vaginas, already ready to receive the sleep, throbbed and tempted Shihyuk.

    “Was it good?”

    “Yes, yes♡”

    Si-hyuk, who laughed at his older sister who looked like a prostitute, rubbed his penis against the crack of her vagina and smeared his love juice on it.

    Then, he brought the glans to the anus, created a position perfect for insertion, and opened his mouth.

    “Oh, right. You don’t have to prepare the back tomorrow.”

    “in…?”

    Su-ah found it strange that he didn’t use the hole that he had always used with his finger or a dildo every day unless something special happened.

    I felt sad that I wouldn’t be able to have sex like this tomorrow, but something felt ominous.

    It was more ominous than masturbating with anal in the house where my mom was, only to realize later that the door was open.

    Just before I realized what the ominousness was, Shihyuk spoke.

    “It’s Chaewon’s birthday tomorrow, so I decided to give her a lot of presents.”

    .

    .

    .

    ah.

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