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Chapter Text

With trembling hands, she cautiously opened the front door, trying not to make a sound. The house lay in silence, as expected at this hour when everyone, including her step-siblings, was fast asleep. The main mansion belonged solely to them, while the butler's residence stood a little farther away.

She desperately tried to push aside the memory of Zebro's, their gatekeeper, pitying look just moments ago. It had been going on like this for nearly a year. Why couldn't he simply ignore her, as everyone else did? Anger surged within her, and she fiercely wiped away the tears threatening to escape. Her eye makeup had already smudged beyond repair.

Just as she was about to ascend the stairs, she glanced up and noticed someone standing at the top. He stood with an air of casualness, hands nonchalantly tucked into his pockets. Under the moonlight streaming through the giant window behind him, his skin seemed to radiate a soft glow. His face remained expressionless as his piercing blue eyes locked onto her. After what felt like an eternity, he turned away and disappeared.

She released a breath she hadn't realized she was holding. Upon reaching her room, she undressed and stood before the full-body mirror positioned near her king-sized bed. Her neck was almost entirely covered in love bites, with a few bruises near her inner thigh. Disgust surged within her. She felt repulsive, and she knew it too well. Gently, she touched her smudged cheeks, her gaze fixed on the reflection of the girl in the mirror.

Her once lively honey brown eyes now appeared utterly lifeless. Large eyes, full lips, clear light brown skin, and long raven black hair with dyed green tips cascading down to her waist—a slender body with no trace of excess weight except for her decently sized bust. She was aware of her beauty, for she had been told so ever since she was a young child.

There was a time when he reluctantly called her beautiful. She had laughed then, amused by the way his words flustered him. She had returned the sentiment because he was beautiful too. He still is. Beautiful when he slept, beautiful when he was weary, beautiful even when he now looked at her with disdain. In her eyes, he always appeared flawless.

She crawled into her queensized bed, which seemed far too spacious for her alone. Such a vast bed felt lonely. She yearned to share it with him, just like they used to in the past. However, she knew it was an impossible dream.

As she switched off the lights, she pulled the covers over her head, curling up into a ball. When did she become so repugnant?

What normal seventeen-year-old spend her school nights with different guys, knowing that none of them truly cared for her?

What normal seventeen-year-old watched the person they love be infatuated with someone else, wishing it were her instead?

What normal seventeen-year-old harbored feelings for their stepbrother?

Gon Freecs. She was a pathetic, pitiful whore, deeply in love with her stepbrother and stuck whoring herself around, hoping to forget about him.

Chapter Text

"Big sister, wake up!" Her younger brother jumped onto her bed, landing on top of her.

"Alluka, I thought I told you to stop jumping on me like that," she groaned.

The young boy giggled. "If I don't, you'll never wake up."

He wasn't entirely wrong. She gently ushered the long-haired boy out of her room after showering his cute little face with kisses, as he liked. Letting out a sigh, she entered her bathroom. She had to give it to her mother; being a gold-digger wasn't all that bad. Her step-father happened to be one of the wealthiest men in the country.

Half an hour later, she finished showering and applied her usual makeup— concealer under her eyes, fake eyelashes, winged eyeliner, and clear lip gloss. She looked at herself in the mirror and adjusted her skirt, making it a bit shorter. She didn't care if it was provocative; bending down would probably flash everyone. But she didn't give it a second thought.

After putting her hair up in a ponytail, she headed to the dining room. She hesitated when she saw that Killua was already seated. He didn't even bother to look up as she entered the room.

"Big brother!" Kalluto followed her, completely ignoring her presence as he made his way toward his brother. "Hurry up. I want to have perfect attendance for this entire trimester."

The silver-haired boy rolled his eyes. "Shut up and eat. We won't be late."

She took a seat across from him, next to Milluki, who was eating more than all of them combined. The table was filled with an array of food prepared by the butlers, yet she only took a croissant and a glass of water. She couldn't afford to become any bigger. Her mother always told her that no one liked girls bigger than a size 2.

Speaking of her mother, she entered the room dressed elegantly as always, her long dark wavy hair flowing behind her. Taking her seat at the head of the table, she greeted her children with a "Good morning."

They all replied in kind, except for Killua, who mumbled his response.

Her mother tutted disapprovingly. "Killua, stop slumping. Sit up straight." She then turned her gaze to her daughter. "Gon, Milluki. Are you two trying to get even fatter?"

Milluki pouted. "No, mother."

Gon didn't bother responding.

The woman's attention shifted to Alluka, her expression snarling. "What are you wearing? You look way too feminine like that. Take off that headband."

Her mother could be quite unpleasant.

Alluka sighed and removed the hair decorations. He loved experimenting with clothing, and while his father didn't mind, his stepmother despised it. There were times when his siblings caught him wearing Gon's dresses, but his father and siblings had grown used to it.

Eventually, Milluki excused himself and locked himself in his room to play video games all day. Their mother allowed him to do so since he had already graduated from high school and wouldn't start college until the following week.

Killua also stood up, announcing that anyone ready would get a ride to school.

Gon felt a strange awkwardness as she sat in the driver's seat. Kalluto and Alluka engaged in a lively conversation, occasionally asking their older siblings questions.

However, there was complete silence between her and Killua. They no longer spoke to each other unless strictly necessary. Even then, it was just mundane questions like, "Could you let me take a picture of your notes?" or "Where is [insert sibling's name]?"

She missed the times when they could hold hands without him saying something about it.

Sighing, she turned to look out the window.

They arrived at their destination soon after. As Killua parked the car, the younger siblings waved goodbye and headed off to the middle school section. Gon turned to look at Killua, only to be met with the sight of his girlfriend pressed up against him, their mouths locked together.

Feeling sick, she quickly left. She wished she could hate her, but she couldn't. Leila was not only beautiful, with her dark mocha skin, full lips, and long curly hair, but she was also genuinely kind. She was one of the few girls who didn't slut-shame Gon; in fact, Gon had heard her defending her on several occasions. It seemed that Killua ignoring his sister didn't stop Leila from standing up for her.

Gon highly doubted that Killua would care if Leila started talking negatively about her, but she didn't.

As usual, some people looked at her with lust, disgust, or amusement.

"Her skirt gets shorter every time I see her."

"Damn it, I want to fuck her so bad."

"She's the type who would let you choke her, probably."

"She has no shame."

"I heard she had sex a Retz's boyfriend. What a slut."

Gon shook her head in disbelief. Retz was her friend. Why would she do that?

Sighing, she made her way to her homeroom class.

She couldn't wait until she graduated and would never have to see these people again.

"You're evil," Zushi stated.

Killua smirked. "No, I'm just smart." He looked at the map, which held all the pictures, and chuckled.

"How did you manage to do it?"

The handsome boy threw a smirk at his friend. "Simple. I'm her brother."

Zushi shook his head disapprovingly. "A brother who takes pictures of his sister and then sells them."

Killua shrugged. "Nonsexual pictures. I don't want to end up in jail."

Zushi gave him a disapproving look.

Killua opened the map. The pictures were of Gon napping on the playroom sofa. She was wearing a long white T-shirt, which he recognized as his own, and dark leggings. She looked adorable. The people who bought these pictures would likely not use them for innocent reasons, but Killua couldn't control how they thought of her.

"I'm amazed," Zushi's voice broke through his thoughts. "She's been with almost all the guys in this school-"

"-and some girls," Killua added.

"Yet they want relatively innocent pictures of her from you. What's the deal?"

Killua laughed. "Explicit pictures are so 2019. Nowadays, people just want pictures of cute Asian girls looking cute."

"Isn't your birth mother Asian? Why don't you sell your own pictures? You'd probably make a lot of money," Zushi suggested.

Killua pouted. "That's no fun."

Zushi shook his head. "Anyway, I noticed Leila gave you a very enthusiastic greeting outside."

Killua shrugged. "She always does."

Zushi stared at him for a while. "You don't like her, do you?"

Killua blinked. "What are you talking about? The sex is amazing!"

Zushi groaned. "I don't need to hear about that."

They entered homeroom. Killua took his usual seat at the back of the class, by the window. During the lesson he let his eyes wander through the classroom.

He spotted Gon. She was a relatively nice girl to have as a sister, he admitted. Then again he hadn't spoken to her in almost 3 years. They were seniors now and didn't even greet each other. He sighed. How could people fall out so quickly?

He looked away, not noticing that Gon was looking at him now.

----

"You did what?"

"I destroyed the pictures." Killua said after class ended, standing in front of Zushi's desk.

Zushi looked up at him in shock.

"What? I thought you didn't approve of me thinking of selling them."

"Yeah but.. Usually when you decide something, you don't change your mind. I just thought it was odd okay."

The blue eyed boy shrugged. "If I sold them, people would expect me to always sell her pictures and I'm too lazy for that. That's all."

"Riiiiight."

---

Jealousy and anger.

That's what she felt when she caught them in the library. They were in a secluded part of the library and hadn't noticed her yet. She gritted her teeth at seeing Leila sitting in his lap, topless and her bra on the floor.

She used to try to convince herself that she was just jealous of Killua being in a happy relationship and not the fact that she wasn't his girlfriend, but obviously that failed. She was desperately in love with her step brother.

It was part of the reason she slept around so much. Pretending that all those hands touching her were his.

She watched as Leila's lips trailed down his neck. She wanted to slap her hands away. Tell her that the boy was hers.
She took the biggest book from the shelf and threw it as hard as she could on the floor. The loud sound broke up the couple and made them look at her. Leila covered her breasts(they were smaller than hers. Gon was not impressed.) with a yelp and jumped off Killua's lap. Turning around so Gon could only see her back, the girl put her bra back on.

"I'm sorry." She said monotonously, locking eyes with the boy. He was flushed and looked a bit embarassed. She left without another word.

Leila groaned. "Remind me to never do it in the library again."

Killua smirked at her. "You're the one who started pressing herself against me like an animal in heat." He laughed as the girl cursed at him and threw her shirt at him.

---

That day after school she had a nervous looking Kurapika seated in an empty classroom. "Gon?"

She smiled at him as she sat on his lap and removed her tie. She was still angry after catching Killua in the library and needed a distraction.

Kurapika was the perfect target. A lot of girls crushed on the smart and handsome boy. She felt a sick sense of satisfaction at the thought that she was going to be the one to take his virginity.

Eventually she was completely bare from the waist up. She couldn't help but giggle when the boy tried his hardest not to look at her chest. Such a gentleman. "Kurapika, you're such a cutie."

If she didn't have feelings for Killua, she would date him.

She gently took his hand and placed it on her breast.

A few moments later, she was bend over a desk, Killua's desk, as he roughly thrusted in and out of her. The quiet ones were always the wildest.

She whimpered when he came inside her. I wish I could do this with Killua. She thought miserably.

She yelped when Kurapika roughly grabbed her shoulders and turned her around. His eyes were dark with lust. He then pushed her down roughly, so that she was sat in front of him.

Gon quickly understood what he wanted. She thought it was gross, her having to do this to him after he had been inside her. She opened her mouth and wrapped her lips around it. She almost rolled her eyes when she felt him groan and then started sucking. She withheld the urge to grimace when she was able to taste herself. Gross.
------

She arrived home, the evening sun casting a warm golden glow over the surroundings. It was a relief that she wasn't as late as usual this time. The fact that her mother had returned from her world trip yesterday played a role in that. The last thing she wanted was to face her mother's disapproving lecture on how to be a proper young lady.

"Proper young ladies don't stay out late at night," she could almost hear her mother's voice echoing in her mind. Entering her room, she wasted no time in shedding her school uniform and changing into her comfortable night robe. It was still early and she wasn't particularly tired, so she figured a walk wouldn't hurt. After all, their expansive backyard consisted of a beautiful forest.

However, as she stood in the hallway, a strange force seemed to halt her in her tracks. Killua's room was just a few doors away from hers, and before she knew it, she found herself standing in front of his door, nervously knocking.

"What?" His voice came through the door, filled with annoyance.

She swallowed hard, gathering her courage. "Um... Killua, can I borrow your notes for a moment? I'll return them quickly, I promise." Internally, she sighed. It was the same excuse she always used to be able to talk to him—only when they needed something for school. She longed for the days when they could talk freely, without these barriers. If only she could break the ice and go back to how things used to be.

"Whatever. Take what you want, but don't make any noise," he replied, sounding tired.

With hesitant hands, she pushed the door open and entered his room, gently closing it behind her. Killua's room was meticulously organized, as always. The walls were painted in pristine white, with hints of blue and purple accents. Posters of his favorite female celebrities adorned the walls, including Beyonce and the K-pop girl group Blackpink , whom he found attractive.

She made her way to his desk where his school bag lay, and she pretended to rummage through it to take out his notes, even though she didn't actually need them. A gentle smile graced her lips when she noticed a framed picture on his desk, where they both had their arms wrapped around each other. It was a snapshot of a time when Killua still loved her. But her smile quickly faded when she saw another picture beside it. It was a photo of Leila, wearing a yellow dress and holding a huge sunhat. She looked so pretty that it only fueled Gon's resentment towards her even more.

Her eyes then shifted to the kingsized bed, where Killua lay on his side, fast asleep. He was partially exposed, with the sheets not fully covering him. His shirtless form revealed marks on his neck, clear evidence of the sex he had with Leila. Anger and jealousy stirred within her, her jaw clenching at the mere thought of it. Slowly, she approached the bed, her gaze fixed on him. Carefully, she pulled the sheets up to cover his bare skin, leaving only his shoulders exposed.

The boy stirred and groaned, turning onto his back while still in the depths of sleep. Her hand trembled, reaching out tentatively, but she stopped herself just before making contact.

Killua had always been a light sleeper. Yet, against her better judgment, she couldn't resist the overwhelming attraction she felt towards him. It was unfair how the universe seemed determined to keep them apart—Killua's rejection, his father's affection for her mother resulting in them ending up as siblings, and his love for another girl. Shyly, she pressed her lips against his, unable to resist the temptation any longer.

Pulling away briefly, she repeated the act, her heart racing. After a few seconds, sensing his shifting, she quickly withdrew. She felt a sense of relief when she saw that he was still asleep, unaware of what had transpired. Hurriedly, she left the room, closing the door as silently as possible.

Killua, now lying on his stomach with his face buried in the pillow, briefly opened his eyes but quickly succumbed to fatigue, drifting back into a deep slumber, completely oblivious to the kiss that had just been bestowed on him.

Chapter Text

"They make such a cutecouple," Retz swooned, standing by Gon's locker. Killua and Leila were walking, holding hands.

Gon suppressed a sigh. Of course. Killua was undeniably handsome, and Leila was a beauty. Both of them were also popular.

Biscuit was the only one who knew about Gon's feelings for Killua. She had never explicitly confided in her; the blonde had just somehow figured it out.

As the couple walked past them, Killua didn't even spare a glance at his sister.

"Gon, would you like to come over today?" Biscuit asked, noticing Retz's raised eyebrows. She quickly added with annoyance, "No, not like that, you pervert!"

"Sorry, I already have plans," Gon responded, her words carrying a hint of truth. Killua was going on a date with Leila today, and Gon intended to watch... Not in a creepy way, but to ensure that his girlfriend treated him right.

"Oh, okay. Perhaps another day then," Biscuit replied, linking her arm with Retz's and heading toward their classroom.

Gon frowned as she glanced at herself in her pocket mirror. It was going to be a long day.

---

"Mr.Lucifer..." She was sitting on top of her desk, twisting a strand of her dark hair. The teacher edged closer, his face mere inches from hers. She smiled as she pulled on his tie. Their lips met as she wrapped her legs around his waist. She gasped in his mouth as he began grinding against her.

What they were doing now was taboo. A 27 year old man with his 17 year old high school student.

Chrollo's large hands roamed over her waist, reaching down.

Killua...

"Ngh... I have to help Biscuit with her homework." She scooted away from him. "Let's continue this another time."
She quickly gathered her books and left the classroom.

---

Gon returned home, realizing how strange it would be to follow Killua on his date. Bored out of her mind, she spent a couple of hours watching Milluki play video games before helpingAlluka with homework (Kalluto never asked for her help).

After spending some time in her bedroom, she was taken aback when Killua entered. There was a pensive expression on his face as he sat down at her desk, his blue eyes focused on her. She blushed. "Hey, Gon..." he greeted.

"Hey," she stammered in response.

"I know this might sound random, but..." Killua let out a sigh, running a hand through his hair. "I miss it."

He bit his lip. "I miss us..."

Before Gon could speak, he continued, not allowing her a word. "I don't really know why we grew apart, but I know I played a part in it. I started ignoring you and never made an effort to salvage our relationship. I'm sorry."

Tears welled up in Gon's eyes, causing Killua to appear uncomfortable. She found it almost amusing—he still felt uneasy around a crying girl. "I'm happy. I want us to be friends again."

She stood up and walked toward him, disregarding his cautious expression. A giggle escaped her as she sensed his tension when she hugged him. Gradually, he relaxed in her embrace. "Gon?" he whispered.

"Yes?" she replied.

"Our teacher isn't acting inappropriately toward you, right?"

"No," she reassured him. Not anymore, at least. She was putting a stop to that.

"Good. I'm not saying you can't have fun, but I want it to be age-appropriate."

She hummed contently, nuzzling into his chest. Killua slowly wrapped his arms around her. A smile adorned Gon's face. If the world were to end in that moment, she would die as the happiest girl on earth.

Chapter Text

Killua opened his cerulean eyes as he gasped. Gon was straddling him through the sheets. He opened his mouth but she silenced him with a kiss.

Gon almost fainted when she felt Killua arch his back and undo her braid, making her long wavy hair fall down, surrounding him like a curtain.

"Gon..." he murmured when they parted, a string of saliva connecting them.

"Killua.." She grinned down at him.

"GON!!!"

Gon woke up with a shock. She was greeted with an irritated Killua looking down on her. "If you're not ready within ten minutes, I'm gone. And I know that you feel awkward when Gotoh is the one to drive you to school."

"Waah, I'm sorry." She quickly got out of her bed, twisted her knee and fell flat on her face. "Ouch."

Killua  smiled down fondly at her, though she couldn't see that while she was moaning in pain on the floor. Always so clumsy... That's my Gon. He thought.

When Gon looked up she saw the boy of her dreams roll his eyes at her and leave the room.

-----

Killua had been on the toilet. For the simple fact that he couldn't be bothered to be present for Hisoka's class and because the signal was much better in the boy's bathroom. He was scrolling through his phone as he was thinking about the last couple days.

Things between him and Gon were still awkward but that was expected. He noticed that Gon came home much earlier. It was probably because her mother( who didn't know about her daughter's reputation) liked Gon at home like a "proper young lady". He liked to think that Gon just felt more comfortable at home now that they made up.

His train of thoughts was interrupted when he heard the bathroom door being opened. He jumped when someone got shoved against the stall door. His stall door.

"G-Gon...."

Killua rolled his eyes. The boy's restroom? Really Gon?!

The sound of kissing and soft moaning filled the restroom. Killua frowned. He slowly unlocked the stall and peeked outside.

Some random dude had Gon up on one of the sinks. Her head was thrown backwards while the boy's face was between her tits. One hand grabbing her left tit while the other one was under her skirt.

He was just going to try and leave as quietly as possible while those two were occupied.

When he was close to the door he made the mistake of looking back once(why?!) and made eye contact with Gon. She was flushed, panting and sweating while she focused her gaze on him. Killua was frozen.

This wasn't awkward at all.

Gon let out a loud moan, the dude she was with whispering filthy stuff in her ear. While this was happening she kept looking at him.

She did it again, still keeping her gaze on him. Killua flushed and bolted out of there.

The fuck?

Killua ended up surprising all his classmates by showing up to Hisoka's class. By the state of his flushed face, Hisoka cracked a joke about how Killua may have been busy with his girlfriend which made them laugh. Hisoka had to ruin his own joke by asking whether he could join in next time making the students stop laughing and feel awkward.

Killua made no comment on the jokes made at his expense, instead he spend the rest of the lesson looking out the window. He couldn't shake away the memory of Gon staring at him while being pleasured by another dude. It was almost as if she was getting off to hi- he shook his head.

No, that was gross. Their parents were married.

He didn't notice both Zushi and Leila looking at him with worry

Chapter Text

Killua tugged Zushi and his girlfriend towards the entrance of the nightclub, determined to have a fun night out. Zushi and Leila, being 18, had no trouble getting in, while 17-year-old Killua relied on his charm to flirt his way past the bouncer.

As they settled inside, Neon, one of their schoolmatees, stood up and stretched, asking who wanted to dance. Zushi He grabbed Neon's hand and invited her to dance.

Reluctantly, Killua was dragged to the dance floor by his girlfriend, feeling a bit worn out from all the dancing. His eyes widened when he saw his sister walk in with one of the quarterbacks of their school.

"Gon?" he muttered, surprised by her presence.

Leila, wrapping her hands around Killua's throat playfully, responded with a smirk."Are you still shocked by your sister's antics, Killua?" she teased. Killua rolled his eyes and turned to Zushi for answers.

"What is she doing here?" he asked, puzzled. Zushi shrugged and resumed dancing, while Leila giggled.

"Well, Devonte mentioned having a date with her," Shesaid, amused by the situation. Killua tried to turn his head to look at her but was hindered by Leila's grip, tightening whenever he moved.

"How do you know that?" he asked, frustrated.

"You told me," Leila replied, laughing softly. Killua rolled his eyes and shot a glare at his stepsister. He couldn't believe she had the nerve to come to this club and ruin his night, especially with Devonte, her ex-boyfriend. Ever since he witnessed her apalling behavior in the boy's toilet, he had distanced himself from her again. He despised seeing her engage in such behavior.

His attention shifted to Devonte, the dark skinned boy handing his coat to the guy at the entrance. Suddenly, Leila bit down on Killua's neck, causing him to wince in pain.

"Ow, Leila! Stop biting!" he exclaimed. Leila lifted her head, a mischievous smirk on her face.

"I needed you to pay attention to me," she said playfully. Killua glared at her and pushed her away.

"What's your deal?" he snapped, genuinely perplexed by her actions.

Leila shrugged nonchalantly. "I just want people to know you're mine. You're really handsome, you know. People need to know I own you."

"By nearly choking me and biting me? Never do that again!" Killua snapped before walking away towards the bar.

"Stupid Gon for ruining my night, and stupid Leila for biting me," he muttered to himself, frustration evident in his voice. He risked a glance at the dance floor and spotted Gon dancing with Devonte. His narrowed eyes focused on his glass, trying to distract himself from the sight.

"Killua?" a voice called out, pulling his attention to the right. He straightened up and looked at Menchi Anderson, one of his teachers, who was sitting at a table, seemingly struggling to stay upright. Menchi was only 21, making her one of the younger teachers at the school.

"Oh, Mrs. Anderson?"

She smiled at him but soon looked concerned. "Are you sure you're old enough to drink that?" she asked, eyeing his glass.

Killua's eye twitched. before throwing a glare her way. Menchi muttered a 'Just asking.'

"I'm your student, I'm sure you're aware of the fact that I'm a minor. But who cares? Seventeen years old is almost grown, thank you very much." He stated.

Menchi gave him a bemused look.

"Oh, so you just think I can't hold my liquor? Don't worry. " Killua said, feeling irritated.

Menchi  smirked at him. Killua noted offhandedly that she was quite attractive. He probably would have tried to get laid if he wasn't with Leila already. 17 and 21 wasn't that big of an age gap after all.

"I'm sure you can't." Menchi said.

"Fine then, we'll see."

Menchi nodded and ordered a drink for herself. After the drink was served, Killua cleared his throat.

"Ready?" A nod from Menchi. He smirked and brought the glass back to his lips and took a big gulp out of it.

----

"So. You'lready for 'nother-round?" Killua slurred. His eyes kept unfocusing. Menchi laughed and shook her head.

"You're wasted, Killua." She stated the obvious.  Killua blinked a couple of times before focusing on his glass. Menchi's eyes widened when she realized that Killua almost pulled her on his lap and he was trying to reach for her glass.

"Whoa, there, Killua. No more drinks for you." She stated drowning his glass in one big gulp. Killua stared up at her, unblinking, before swiftly pulling her on his lap and  reaching for her face. Menchi blushed and tried to lean away.

"I want..." He whispered before resting one hand on her waist and the other one on her breast.

He would have taken her right there if they hadn't gotten interrupted.

-----

Gon sighed and climbed out of Devonte's car. Devonte closed the other door and smiled at her. She smirked back. The moment he turned to walk towards the hotel, Gon's hands balled into fists.

That no-good teacher...how dare she take  advantage of Killua that way! By getting him drunk, none-the-less. But more importantly...what was he doing there with her where everyone could see them! Also what about Leila? Even now she could see him having her on his lap and placing his hands on her...

"Gon, are you coming?" Devonte shouted. Gon slammed the car's door shut and strolled towards the dark skinned boy. They made their way to their booked room.

"Gon..." Devonte whispered when he dropped the girl on the bed, climbing on top of her. She looked up at him and raised her hands to unbutton his shirt. He lowered his head and buried his face in her neck, kissing and nipping at the soft skin. Bruising.

"More..." She moaned and arched towards him, her nails digging into his back even with his shirt on. She froze for a second, a mental image of Killua having Menchi bent over, moaning the same word...

This was going to be a long night...

---

"DAMMIT!" Gon Freecs shouted, the back of her head hitting the door to her room. She closed her eyes and tugged at her long hair furiously, attempting to calm down. She just got back from her date with the school's jock Devonte. To say it was a disaster on her part would be the understatement of the year. The scene with her stepbrother/crush and that teacher kept playing inside her head for all the night she spent with Devonte.

She willed her legs to move and in a few strides she reached her (unmade) bed. Not bothering to change into her sleepwear, she collapsed on it and glancing for the first time at the clock, she made a sound in the back of her throat and prayed that for once, Killua would forget to wake her up.

. . .

"Hey slut, wake up!" Of course Killua never forget. Her eyes snapped open, bags underneath them and groaned before grabbing one of her many pillows and placing it on top of her ear. She closed her eyes in pure bliss before snapping them open again, a frown adorning her tired face.

"Slut?"

Killua had enough. Every time he had to deal with her walking in the house at the wee hours of the morning and not even bothering to be silent about it. He. Had. Enough. The fact Gon had actually called him a- He couldn't believe it.

He walked inside the kitchen and  opened the fridge door, his eyes scanning the contents inside. Alluka and Kalluto had been bought to school by Gotoh so the only one he had to give a ride today was Gon.

"Slut?" Killua whirled around at the sound of the confused question Gon threw at him. He rolled his eyes at her and walked past the girl towards the dining room. He planned to keep his emotions in check but when Gon grasped his hand and gently yanked his back, he almost lost control. His teeth gritted in irritantion and he stared at his stepsister with ice-cold eyes.

"Don't. Touch. Me." He spoke slowly, his stare never faltering. Gon tilted her head to the side before the events of the previous night fully registered inside her brain.

Her eyes flashed and her grip on his hand tightened.

"Killua, can't you control yourself?" She asked. Her mood worsened  when her brain decided to play once again the memory of Killua and their Chemistery teacher.

Killua glared at her. "Don't you dare tell me what to do, Gon. I was in perfect control of the situation. And you calling me a slut? Have you seen yourself??"

"Oh? So you tell me you wanted her to
..Dammit, Killua you have a girlfriend!" Gon released his hand to clasp both of his hands behind her head and close her eyes tightly, another burst of anger crawling along her skin.

Killua's mouth opened and closed, his cheeks colored pink from the embarassment. However, he quickly wiped off the look of shock on his face and fought off the bush, choosing to cross his arms and look at her with amusement.  "Nothing happened. "Killua rolled his eyes. "I was drunk and Menchi was caught off guard when I pulled her on my lap. I will explain all this to Leila myself too.  You calling Menchi a groomer was unnecessary. She's hardly a Chrollo type of teacher."

Gon opened her eyes. She looked at the boy, the boy who looked very smugly and amused at her. "And even if I wanted to fuck her, what would you have done?" Killua asked, smirking.

And in that moment Gon lost it.

Killua gasped as his back suddenly hit the floor. He raised his eyebrow as Gon pinned his hands on both sides of his head. He  peeked up at her with annoyance. The fuck?

Killua wondered what made Gon so mad. It really wasn't that bad.

"Is that what you want, Killua? To do it with her? Do you realize that you were the one to te me not to mess with Chrollo, a teacher. And now you're talking about fucking a teacher yourself? I saved you from being in a relationship that involved grooming and a huge power imbalance."

Killua rolled his eyes. "Well thanks for stopping me by pushing her off me and screaming so loud that half the people in there had to look at us! Calling her a pedo when I was the one who touched her? Calling me a drunk slut?"

"Well what did you want me to do?"

"I don't know...maybe mind your own date!"

"I already did!"

"Oh, I can see that!" They were both panting and glaring at each other, their gazes never faltering. Finally, Gon shook her head and closed her eyes. Her long wavy hair was surrounding Killua like a curtain. Her breath came out in a defeated sigh and all the anger flew out of her, replaced by tiredness.

Killua said nothing, only watching her with an unreadable look.

"Dammit Kill..." Gon said again, her tone pleading. Her head automatically buried in the crook of his neck. "Why are you-"

"I learned from the best." Killua said while smiling wryly.  He sighed and placed his right hand  on the top of her head and his left arm around her waist.  He ran his right hand  through her hair.

Gon exhaled, her breath hitting Killua's  bare neck.

"Killua, I'm sorry for what I'm about to do."

He blinked in confusion. "What?"

Without answering, Gon removed her head from his neck and placed her lips on his.

Killua's eyes widened. He was being kissed. By Gon. By his childhood friend. By his step sister.

He gasped and Gon took use of the moment to slip her tongue in his mouth.

He wasn't proud of this but he eventually closed his eyes and kissed her back, grabbing her ass boldly as he pulled her flush against him.

Bad idea. Bad idea. Bad idea.

That rational voice in Killua's mind  was speaking up as he flipped them over so he could be on top. He gathered the hem of her tank top in his hands, his eyes hot with desire, that tiny voice still insisted that this entire thing was a 'bad idea'.

As Killua slowly pushed the thin fabric of Gon's top past her stomach, making sure that it rubbed over her  nipples as he tormented her heated skin, that voice bellowed out 'bad idea'. But Killua was past listening to voices in his head. Killua pulled Gon's top back down, his fingers skating past her ribs as he cocked his head.

"Am I allowed to take it off ?" he asked, whispering the question against Gon's trembling lips.

"Yeah," she whispered back. "... I want you to- I want you to touch me, Killua."

Killua wrapped  his arms around her waist and groaned as Gon's hips bucked unconsciously against his. "Fuck," he whispered, a breathy moan slipping out of his lips.

Gon arched her back when Killua's hands slipped under her top and she pushed her breasts out, hoping that he would touch her erect nipples. She could feel that they were super sensitive from rubbing against her tank top, aching for fingers to pluck at them. Her stomach shuddered as Killua skated his teasing fingers over the smooth skin before they slipped past her ribs and finally, finally cupped her bare breasts.

His hands were dry and warm and Gon's eyes rolled back in her head with pleasure as Killua's palms covered them. She gave a groan of pleasure, feeling desire pool in her as he stroked and pinched her stiffening nipples between his fingers. Suddenly the pleasure stopped. She opened her eyes as Killua stood up, looking down at her with a horrified expression.

She wanted to say something but he beat her to it. "We're siblings." He let out a sigh. "This is wrong."

She felt her heart break as she watched him walk away.

Chapter Text

Jealousy coursed through Gon's veins, overwhelming her as she watched Killua entwined with Leila across the room. The sight of them engaged in a passionate embrace made her clench her fists with anger. She glared at the shameless couple, her teeth grinding together.

Killua's actions were cruel and unfair. It had been over two weeks since they shared that kiss, yet he had remained silent about their secret affair. And now, here he was, almost having sex with his girlfriend in front of her. Milluki had left the room earlier, disgusted by their display.

As Killua's fingers traced the contours of Leila's left breast, Gon's frustration peaked. She yearned to slap his hand away and make it clear that he should only be touching her, no one else. When a soft moan escaped Killua's lips, something snapped inside her.

Rising abruptly from her seat, Gon slammed the television controller onto the coffee table, the loud noise shattering the couple's intimacy. Leila quickly disentangled herself from Killua's lap, both of them blushing with embarrassment. Leila offered a look of apology, but Killua, ever the coward, refused to meet her gaze.

Gon stormed out of the lounge room, making her way to her bedroom. Opening the windows, she stepped out onto the balcony and reached for her vape, needing something to calm her racing thoughts. Lost in her contemplation, time slipped away, and the evening air grew colder.

Footsteps approached her, drawing nearer as she exhaled another puff of smoke. "You know, vaping destroys your lungs," a familiar voice spoke from behind her.

Gon turned to see Killua standing there, his usually messy hair even more disheveled, his expensive clothes slightly disarrayed from their recent encounter. She extinguished her vape and approached him, pressing herself against his body, her breasts softly brushing against him. She could feel his tension as he looked down at her.

Whispering huskily, she challenged him, "And what are you going to do to stop me, Kil?"

Killua's face reddened, caught off guard by her boldness. Gon smiled wryly, recognizing the effect she was having on him. "I'm assuming Leila left?"

"Um, yeah..."

Gon continued her seductive advances, her voice filled with longing. "How was it?"

"How was what?"

"The sex," she pressed, pressing herself even more firmly against him. Killua took a step back in shock, but she gently grabbed his arm, maintaining her hold. Standing on her tiptoes, she whispered, her voice laced with desire, "Were you thinking of me? Remembering that day, when I was beneath you in the kitchen?"

"Shut up," he responded, pushing her away roughly. "What we did was wrong."

"We're not really siblings," Gon protested, reaching out to him but feeling disappointed when he stepped back again.

"Our parents are married, Gon. Your legal name is Gon Freecs-Zoldyck," Killua pointed out.

Gon bit her lip, tears welling in her eyes. "We're not blood-related," she pleaded.

Killua let out a bitter laugh. "So what? We're still siblings."

"We knew each other before they got married! It's not fair."

"Gon..."

Tears streamed down her face. "I've been in love with you for years, Killua. I had feelings for you even before our parents got married. It's not fair, it's not fair."

Closing the distance between them, Gon took his hand and placed it on her chest, desperate to make him understand. "I used to think it was one-sided. I knew it was wrong, being in love with my stepbrother. I tried to forget about you. I thought it would be easy once we grew apart, but it killed me to see you with her. And you know the worst part? If we weren't stepsiblings, I could have easily taken you away. Because besides our parents being married, what other reason is there why we can't be together? Me not being 'chaste' is surely not an issue, considering you've had sex too. Maybe not with as many people as me, but obviously, you're no virgin. So give me a reason, besides our parents being married. I'm waiting."

Killua opened his mouth to respond, but then closed it again, unable to find the words. "I... I have a girlfriend," he finally confessed.

Gon smiled sadly at him. "And you cheated on her with me."

Killua's guilt was evident in his expression. "I did, and she doesn't deserve that."

They stood in silence, locked in a poignant gaze.

"You love me," Killua stated, seeking confirmation.

Gon nodded, her love for him unwavering.

Killua hesitated before speaking again. "It would be different if our parents weren't married," he admitted, looking away. "And I have Leila."

Gon gently guided him back inside, closing the balcony doors behind them.

"Gon," Killua began, as she slowly pulled down the straps of her white dress. He watched, captivated, as she revealed more of her body. She stood before him, her gaze fixed on his, and she whispered, "You want this. I think you're in denial, brother."

Killua's words caught in his throat as they engaged in a passionate kiss, their desires finally consuming them.

The following moments blurred into a frenzy. They went from standing by the bed, kissing, to Gon sprawled beneath him, their tongues entwined in an intoxicating dance. Killua buried his head in the nape of Gon's neck, his arms firmly planted on either side of her head. A few strands of her black hair had escaped her formerly elaborate updo and were now trapped under his elbow. With each thrust, his elbow tugged at her hair, a mingling of pleasure and pain.

Placing a gentle hand against his bare, sweaty chest, Gon pushed him up, surprising him with her sudden movement. He looked at her, confusion etched on his face, but before he could speak, she pushed him onto his back and straddled him. Biting her lower lip, she lowered herself onto him, arching her back as their bodies connected once more.

"Fuck, you feel amazing," he groaned.

Hearing his words sent Gon closer to the edge.

All the years of judgment and shame she had endured melted away in that moment. Here she was, using her experience to finally be with the boy of her dreams, making him moan and curse as she rode him to completion.

Killua gripped her waist, guiding their movements and intensifying their connection. Gon's lips trembled as her hips surged against him, her body seeking its own pleasure.

Suddenly, her senses heightened, and a loud moan escaped her as her body pulsated around him, pleasure coursing through her veins.

The intensity left her breathless.

"That was... wow," she panted, unable to meet his eyes as her gaze fell to their joined bodies. Had she... squirted on him? She was well aware of orgasms, but that sensation felt different. Was she technically peeing? Oh God, she must have squirted on him.

Killua opened his mouth, seemingly about to say something, when a phone on the bedroom floor began to ring. Both their gazes turned to the device, displaying the name "Leila" on Killua's phone. Gon bit her lip as she glanced at Killua, who didn't look away from his ringing phone. Guilt and sadness were etched on his face.

"Killua," she started, her voice filled with concern.

But he didn't answer. He gently pushed her off him and started putting on his clothes.

"Killua!" she tried again, reaching out to him as he held the door handle, his phone still ringing in his hand.

He turned to look at her, defeat visible in his eyes. "I'm sorry, Gon. This can't keep happening."

Her heart shattered into pieces.

"I cheated on my girlfriend... with my stepsister. I..." He let out a frustrated sigh. "I think we should go back to how we used to be. I'll figure it out. I'm sorry." And with that, he left.

Back to how they used to be. When Killua pretended she was a ghost and paraded his relationship in front of her.

She burst into tears.

Chapter Text

Killua was taken aback when Zushi revealed that he was dating Gon. They were having lunch together in the school dining hall when Zushi dropped the bombshell, causing Killua to choke on his drink. Anger welled up inside him, and he couldn't help but berate Zushi, calling him an idiot. Zushi, looking sheepish, apologized, but then launched into a speech about how he would treat Killua's "sister with respect.

Killua had to put on a facade of being fine with it, although deep down, he was seething. Gon, that imbecile, had been involved with two of his friends already, and he was well aware of it. Kurapika had even been unable to meet his gaze once. Why did his friends keep breaking bro code? He really needed new friends.

Initially, he wanted to storm into Gon's room and demand an explanation, but he realized that she owed him nothing. He had rejected her, choosing Stella instead. Did he wish she had found a rebound that was not his best friend? Absolutely. But he couldn't change what had already transpired.

At the moment, Killua was trying to focus on Stella's ramblings. She wanted to go to the mall after school to update her makeup bag, and she insisted that he accompany her. Killua didn't mind, so they found themselves at Sephora. Alluka had asked to come along, and Killua had agreed, bringing them along.

Stella proved to be incredibly supportive as Alluka asked for advice on products suitable for a first-time makeup user. She guided the younger teen, showing them which products to use. Killua couldn't help but smile as he watched Alluka's happiness while Stella helped them apply lipstick.

Doubts lingered in Killua's mind about Alluka. He noticed how Alluka would flinch whenever Gon's mother asked them to wear more masculine clothing, and how elated they were when Gon gave them her old dresses. He was simply waiting for Alluka to confide in him. Regardless of Alluka's gender identity, he would love them unconditionally.

As Alluka wandered off to check out some eyeshadows, Stella looked up at Killua, and he returned her gaze with a tinge of guilt. How could he have ever cheated on someone as amazing as her? She approached him, shyly interlocking their fingers, her dark brown skin contrasting with his pale complexion. It amused him how she could sometimes be shy about public displays of affection when they had already taken their relationship to a more intimate level.

Staring into her dark brown eyes, Killua felt a pang in his heart. What was wrong with him? He loved Stella, truly. Yet he couldn't deny the strong attraction he felt toward his stepsister. It was unfair to both girls.

"Alluka... do you think that he..." Stella began, but Killua interrupted her, not wanting to alarm Alluka by suddenly referring to them as a she, although it was evident to him.

"Alluka will tell us when he's ready. Let's respect his wishes and be patient," Killua said, wanting to not scare his sibling by suddenly referring to them with female pronouns.

Eventually, they left the store, although Killua's heart ached once again, this time because he had to pay for both Stella and Alluka's Sephora bags. They giggled as Killua loudly complained about Sephora being a rip-off. "Forty dollars for a foundation? You could have bought mutiple cheaper products with that!"

They ended up sitting at a fountain, sipping bubble teas that Killua had bought for them. Alluka was engrossed in typing on their phone, wearing a smile on their face, while Stella leaned against Killua's shoulder, holding his other hand.

Killua bit his lip, watching Stella's happiness. He couldn't tell her about Gon. Yes, he had chosen Stella, but it didn't erase the fact that he had betrayed his girlfriend.

He knew it was wrong, but he decided to be selfish. He wanted to stay with Stella. So, he softly called her name, and as she looked up, he pressed his lips against hers, the couple too engrossed in their moment to notice Alluka's gagging.

Little did they know that Gon and Zushi were also at the mall, observing them from a distance.

"They make such a great couple," Zushi commented, watching Killua and Stella's kiss. "No wonder they're seen as relationship goals at school."

Gon resisted the urge to roll her eyes. She had thought that Killua would finally talk to her now that he knew about her and Zushi, but he continued to ignore her as always. "Yes, they do make a lovely couple," she replied, although she was lying through her teeth.

Zushi glanced at Gon from the corner of his eye, noticing her slight cringe. He believed that Gon genuinely didn't know about their encounter the previous night. She had called out Killua's name in the heat of the moment.

Killua and Stella finally noticed Gon and Zushi's presence. As Stella raised her arm to wave at them, Gon leaned in and pressed her lips against Zushi'scheek, stating with a mischievous smile, "But we're even cuter."

Zushi blinked, realizing that Gon had done it to make Killua jealous. Glancing at his friend, he saw Killua roll his eyes.

Zushi inwardly sighed. He couldn't stay in a relationship like this.