Thank you very much for clicking the link for this story. This story would be mostly about my OC here, some stories would be altered. In this fic, Gon would be female. Hope you enjoy reading this.

Reviews would be very much appreciated.

Disclaimer: I do not own Hunter x Hunter but I wish I do.

Chapter 1: Family X Kallua X Disappear?

It was an usual day for him..

"All right everyone! Breakfast is ready" Gon said, yelling from the kitchen.

Gon Freecs is now Gon Zaoldyeck. A woman who is now 30 years old with a long wavy and a bit curly raven and green streaks hair. She had slight tanned, smooth yet delicate skin (which is really a surprise considering she is a hunter and used to travel a lot) She had a hourglass figure and her eyes are hazel that are shining brightly in happiness, she giggles as she feels her beloved presence as a pair of his hands are now circling her petite waist.

"Need any help?" A cool yet gentle and soothing voice was whispered through her ear. Hearing his voice makes Gon sigh in content as she leaned back on his broad chest and letting out a happy mewl.

The one who does so was none other than Killua Zaoldyeck who is now 30 years old as well. He has a slightly long that it reach his neck and spiky silver hair. He had a pale skin and had a lean yet muscular form. His sapphire eyes are shining brighter as they are meeting her hazel eyes. Giving his wife a small smile before he goes to kiss her cheek, earning another giggle from Gon which is sounded like a sweet birdsong for him.

Gon begins to smile before spun around and gives her husband a quick yet a chaste kiss. After that the two shared a laugh, as they are simply happy with each other.

"Well, you can help me to set the table, Killua" Gon said before smiled.

Killua nodded and setting out the table while Gon takes the food. Moments later, a figure was shown standing next to Killua. Killua slightly jumped at the sudden presence, his skills must have gone dull from all of that working for him not to notice his son's presence.

"Seriously, are you trying to make me getting a heart attack!? Kallua!" Killua exclaims as he gives his son a glare.

"Sorry Papa. I thought you would notice since I didn't even use zetsu to hide my presence" Kallua said, bowing his head to apologize.

Kallua Zaoldyeck, the first son of Killua and Gon Zaoldyeck. He is 12 years old right now, he had a silver hair and sapphire cat eyes shape like his father but different hair style as he have long sideburns until it reaches his waist then spiky hair on top before it is followed down by long, smooth, silky straight hair. He had pale skin just like his father, he has a lean and has muscular form. He is currently wearing his school uniform, light grey shirt then dark grey blazer with red stripe and black pants. Also, he is now the heir of the Zaoldyeck after his father. He is cold and emotionless towards other people but he is showing a bit expression towards his family (make it exception in Killua's family)

"Yeah, your skills have definitely improved. I'm impressed, at this rate, you might be able to surpass me at any moment" Killua said as he still sets the table.

Kallua shook his head "Don't be so modest Papa. It's obvious that you are still stronger than me" Kallua said and take a seat.

Few seconds after that, footsteps was heard and everyone know the owner of those light yet graceful footsteps.

"Good morning, Killia" Killua said the moment he sees his daughter, walking towards them.

"Morning Killia" Kallua said, giving her a small smile.

"Morning Dad, morning Kallua-nii" Kallua smiled as she took a seat next to her brother.

Killia Zaoldyeck, the second daughter of both Killua and Gon Zaoldyeck. She is also have a silver hair like her father, although her hair is long , his brother hair is way longer than hers but she had her mother's hazel eyes and slightly tanned skin. She had curves as well despite she is only 10 years old. She is wearing her uniform, dark grey sailor with red ribbon nearby her neck and on the each side of her sleeves with dark knee length skirt. She is not an assassin and had no desire to be one as she just wants to be normal.

As the food has being placed, the family begins to dig in.

"Too bad that the twins are not here" Killia said, starting conversation.

"It can't be helped; the two of them are having a field trip after all. That is why they are not here" Killua said.

"Kallu? Are you going to be home late again, today?" Gon asked.

"Yes Mama. I have school president duty after school,, then sword training with uncle Hiei then assassination training" Kallua said.

Killia pouted cutely "You are always home late. Can't you just skip them, I want you to play with me, Kallua-nii~"

Before, Killia used to pick on Kallua but now over the years, she develops a brother complex feelings towards Kallua.

"Don't be selfish Killia, Kallua is responsible. He would never skip any duties that are given to him" Killua said.

"That's true but there are times that you should take it easy Kallu. Next time, make sure to come home early alright?" Gon asked Kallua with a smile.

And Kallua replies it with a smile as well then nodded "Sure, Mama"

After the small talk in dining table, Killua goes inside his car before going to his company. He didn't forget to give his wife a goodbye kiss of course, it was already their routine.

The two siblings go out from their house to go to school after saying their farewell towards their parents. They walk together and chat for a while before another person comes to join them.

"Morning Killia! Good morning Kall-Chan~"

Kallua inwardly shivered, he knows the owner of that annoying voice but Killia didn't mind. Instead she wave her hand towards that person.

"Good morning Fraze" Killia greets her cousin happily.

Fraze Freecs are the adopted son of Hiei Jaganshi Freecs and that makes him the cousin of Kallua and Killia. He is currently 14 years old, with a short yet dark orange-brownish hair and crimson eyes that are strangely the same as his adopted father. His skin is a bit more tanned than Killia's. He is wearing the same uniform as Kallua but his undershirt is white. Currently he is in love with Kallua that is definitely an unrequited love. His hobby is definitely bothering Kallua and stalking him while the second is sword training. All in all, he almost has the same personality as Hisoka considering they are always spending time together, it is no surprise.

"Kall-chan~ Aren't you going to hug me?" Fraze said, smiling.

"Get away from me" Kallua said darkly and glaring with so much hatred at Fraze before shoving Killia to his side so that she is in the middle in between both of them.

"Aww~ You're no fun Kall-chan, but that is what I love the most about you" Fraze said, drooling a bit.

"I'm so going to puke" Kallua said, completely trying himself so hard not to punch his cousin. He didn't want to show violence towards his little sister so he held back. At least in their family rules are `family can't kill each other' but Kallua knows that as long as he didn't kill Fraze then beating him is allowed right!? He is so tempted to do that.

"There- There" Killia said soothingly, trying to calm her brother despite the dark aura coming out at him.

The three of them are finally arrived towards the Hunter school. The hunter school are built for students that wanted to be hunters and it was built by the idea of Gon Zaoldyeck as the member of the Zodiac Twelve who wants to give people educate about hunters and supported by Killua Zaoldyeck as a company president for sure. The school is like a normal school since it teaches normal subjects such as math, Physics, Chemistry and etc but there is also fighting lesson in the schools. The teacher are all hunters as they teach the students, some students can choose that they are learning to become hunters directly from the hunters and take the exam or they just graduate as normal students. It is basically the choice of the students in hunter school.

Actually Kallua is already a hunter, a black list hunter. He gets the license when he is six years old and become a single star hunter at the age of seven before he finally becomes a second star hunter at the age of nine and finally he is a triple star hunter at this age now. So there is no need for him to go to school but because his parents are the one who made the school, Kallua being asked to help as the school president. He is a genius after all, always number one in studies and sport in school.

"Well Kall-chan. I'll see you later, love you~" Fraze said and blows a kiss before leaving which makes Kallua held his pounding head in agony while Killia sighed.

"C'mon Kallua-nii. You shouldn't be late, you are the school president after all" Killia said.

"Yeah, I know" Kallua said and open his locker.

Brugh! Srak! Duk!

Bunch of love letters and some gifts scattered all over the floor. Kallua is popular as well, known as the Casanova due to his gentle personality towards girls, he is also able to say embarrassing things without embarrassing himself. Many guys said that not only Kallua has silver hair, he has silver tongue as well (get the joke?). That is definitely a personality that he gains from his mother, saying anything honest that comes in their mind.

"Kallua-nii~"

A dark aura is shown from Killia. She is only learning the basic of the four principles of the nen but her dark aura able to make Kallua the triple star hunter shudder. Kallua slowly facing his little sister who is looking at him with a dark look.

"You are not going out with any girls, right?" Killia said in eerie tone, she is really possessive with her brother to the point she won't allow her brother to have a relationship.

Kallua sigh at his little sister's possessiveness "Just cut that out Killia, you know me well after all. Do you think I would do that?" Kallua said as he emptying his locker.

The dark aura disappearing.

"Perhaps, you didn't believe me?" Kallua asked as he looks at Killia straight from the eye.

Killia went silent for a while before blushed.

"N- No way. Of course I believe you, Kallua-nii" Killia said before hugging her brother.

"Alright, alright. Good girl" Kallua said with a small smile and pat her head.

"Kallua-nii~" Killia look up at her brother and smiled in daze.

Everyone who witnesses this scene can only sweatdrop and jawdrop while thinking the same thing.

`They look like lovers instead of siblings'

After that the two sibling part ways to their own class together. As he is no longer with his little sister, his bright sapphire eyes has now become dull and dark and he has a cold look. He is only showing a bit expression towards his family but towards the stranger? He is just going to ignore them mostly although he tries to be kind towards the girls as that is what his mother always told him to do so, guess he is truly an obedient child towards his family.

When Kallua come inside his class, most students come and look at him with admiration although there are some looking scared and intimidated just by his mere presence. Kallua didn't utter any single word of greeting, he is just silently goes towards his seat and taking out his book then studying the ancient language. Studying is his hobby after all and he always read a lot of books, no matter how complex it is.

The teacher comes in and the class started, teaching about some mysterious creatures that are found in the Numere Wetlands. Kallua just casually ignored the teacher and continued to his book although actually, as he reads the book, his ears are finely tuned towards the teacher explanations. What a genius he is.

"Kallua? Mind sharing towards everyone what is the name of the giant-man eating tortoise that lives in the Numere Wetlands?" The teacher asked

Eyes not leaving his book but nevertheless, he answered "The Noggin Lugging Tortoise"

"Correct" The teacher dejectedly said and gripped the chalk too tight until it snapped. Seems that the teacher wants Kallua to fail really badly even if it is only once.

The girls are squealed at his genius answer, Kallua politely giving them a small smile before continuing his book, ignoring the silent gaze that being given by the guys. They are definitely scared to glare at the Heir of the Zaoldyeck, they are too cowardly to do that.

"It's dodge ball time!"

Students are trying to keep up with the teachers that are throwing the ball with quite an enormous speed. Kallua easily receiving it and striking back, the teachers are not using nen so making it much more easier.

After all, only a handful of students in the hunter school that learn nen and promised not to teach it to anyone that are not hunters. That is why only 97% of the students are not nen user while the 3% are nen user. Except for the teachers that are hunters, all of them are nen users. That is why students that are a hunter and nen user in the school are called elite and Kallua is one of them.

All in all, all this day are just normal for Kallua.

"Kallua-nii~ since the shool is already over, I'm going back home. Try to go back home as early as possible, okay?" Killia said as she's about to leave her brother's office.

"Alright, I will try" Kallua said, still not taking his eyes off the mountains of paperwork.

"Bye~" Killia said before leaving.

Kallua just silently do his paperwork. Mostly it is about the reports on the activities in school, lately some nen user are rampaging but at least they are not a threat which is quite a disappointment from Kallua.

"Well, at least I have finally finishing all of this paperwork's. I should go to Uncle Hiei's house and meet that Lunatic Fraze- as usual" Kallua mumbled and grumbled as he is now arranging the files then goes to his uncle's house for the sword training.

He finally arrives in the Japanese style house, he invite himself inside and goes towards the tea room and found his uncle is currently wearing a black Japanese yukata and drinking his sweet tea as he watches the koi fishes jumping out from the pool.

"Early as usual" The man said with a deep yet stern voice.

"Of course, uncle Hiei" Kallua nodded as he close the door then he goes to sit across his uncle who is now facing him.

Hiei Jaganshi Freecs, currently 33 years old. He has a spiky black hair with blue outlining and white streaks, he has crimson and sharp eyes, his skin is quite a regular peach-tan and his muscle could be seen despite he is wearing a loose yukata. He wears a white headband to hide his Jagan that are purple iris.

Hiei watched his nephew with a smirk "Ready for training?"

With a serious gaze, Kallua nodded "Yes, of course"

Right a second Kallua said that, the door of the tea room they are currently inside is now open with a slam force.

"Kall-chan~ You are here" Fraze appears and was about to pounce Kallua but-

His father is now glaring at him which makes Fraze gulp and stop his action on whatever he is about to do. He may be strong but he is really scared of his father, his father is his weaknesses after all. Noticing his uncle had helped him, Kallua sent a grateful look towards his uncle.

"Alright both of you, let's go to the dojo and take your swords immediately the moment both of you step inside" Hiei said as he stands.

"Yes" Both Fraze and Kallua exclaims at the same time.

…..

"Put more forces into it!" Hiei yelled at both of his students.

"Yes!" Both Kallua and Fraze exclaims at the same time. They put more forces on the next swinging of their blades,, causing loud sounds clashing by both of their swords are clashing against each other.

Despite Fraze always crushing on Kallua, Fraze will be serious in sword fighting which makes Kallua relieved that he could spar with his cousin normally although they did ever tried to kill each other once for the experiment of new technique. Luckily Hiei prevent that and after that, Kallua and Fraze has never ever tried to kill each other, just spar normally as usual.

"Alright! That's enough for today!" Hiei exclaims as he cross his arms.

"Yes, Sensei!" Both of them said at the same time again.

"Good, Kallua. You are dismissed, you have to go to your other training right? Just leave the cleaning to Fraze" Hiei said before disappearing.

"What!? That's unfair, father!" Fraze yelled at the spot which his father was there few seconds ago.

"I think I have spent more time in assassination more than sword training so I'll be taking my sword home for more practice. Bye" Kallua said simply after he put his sword strapped on his back.

And just a second he said that, he quickly leaves as well. Not giving Fraze a chance to hug him or even saying goodbye.

"So cold, Kall-chan~ But that just makes me want you more~" Fraze said as he started to tingling.

And Kallua started to shudder as he runs and made his way towards the KuKuroo Mountain.

He didn't bother to take a bus to go there, he's just training himself to run all the way until he arrives towards the famous gate that is also called the Gate of Hades. He opens the gate until the seventh door then goes inside and gets welcomed by Mike. He pets it for a while before rushing to go towards the mansion, he did nodded in greeting for several servants along the way though.

As he arrived inside, he is now greeted by Illumi who is waiting for him and looked at him in stoic. Kallua made the same face, empty and emotionless. The two walk in silence as they go to their training room.

"Today's training would be spar against me. Even though it is only a practice, make sure you put a serious effort in this" Illumi said as he watches Kallua unstrapped his sword on his back and put his stuff away.

Kallua nodded and prepares himself in a fighting stance. Half a second later, Illumi attacks first then countered by Kallua. The two moves on quickly, any ordinary person who witness this fight would be only seeing blur.

"You are getting good but don't let it go to your head. You still have a long way to go" Illumi said, face expressionless as usual as he dodging Kallua's attack that is aimed directly towards him.

"Hn" Kallua grunted and concentrating before launch another surprise attack while hiding his murderous intent. Illumi had to admit, that move just caught him off guard for a moment, and he only realizes the attack after Kallua lets out his murderous intent few seconds later. If Kallua did intend to harm him, he would have received a massive damage by now.

"Next is nen training. This time, we will spar again with nen" Illumi said and use ten.

"Yes" Kallua said in a low voice before activating his ten as well then goes to spar again with nen this time.

"Well, look at the time. Your training has finally finished, you may go back" Illumi said as he looks at his phone then towards Kallua who is trying to control his breathing.

Kallua just nodded silently since he is still breathless. He had small bruises around his arms and Illumi had a cut on his right cheek where Kallua managed to slash him. No hint of pride is shown for Kallua, he knows that only that small mere cut is just nothing to celebrate over.

Kallua pack his stuff silently as he strapped his sword back with a cold and emotionless gaze. When he is in the presence of his father's family, he would be much more expressionless and intimidating than towards the strangers.

"Tell me. Do you have any friends?" Illumi asked suddenly.

"Nope" Kallua answered shorty.

"You want to have one?" Illumi asked again.

Kallua shook his head immediately, showing he truly not wanting to have one"No, that would be troublesome" Kallua said, feeling irritated as he remembering his classmates always bugging him and tries to pried into his business when they are clearly not involved. He is clearly annoyed to the point he swore that having friends is definitely annoying. He definitely has no need for friends and his answer just made Illumi seems to give a satisfied nod.

"You have done well. Just in few more years, you would be able to surpass me and my father. As long as you keep listening to us that is" Illumi said before putting his hand on top of Kallua's head. "Remember that we have high hopes for you now, you better not disappoint us"

Kallua sapphire eyes gone dark, nodding his head as he looks at his sensei's dark and truly never ending deep eyes.

Silence in the air but the look in Kallua's eye was more than enough for an answer for Illumi. He release his hand before leaving and mumbling "Father wants to see you before you go"

"I understand" Kallua said as he picks up his stuff and finally made his way towards his grandfather's room and knock the door.

"Come in" A heavy voice said makes Kallua open the door and come inside, seeing his grandfather looking at him in amused look.

"I'm here grandfather Silva. Did you perhaps have a job for me?" Kallua said as he made his way towards his grandfather and sit across him.

Silva look at his grandson amusingly, he for sure knows that his grandson would definitely become the best assassin ever in the Zaoldyeck history and he would had no problem although compared to his son, Killua. His son sick of killing and wanted to have friends but his grandson doesn't care about killing and didn't even have any desire to have friends. Silva definitely spoils his grandson rotten as he lets Kallua do what he wants or roam whenever he wants, free or not, Kallua would just never stray from the assassins path. Truly dutiful, obedient, smart, special and strong, an ideal assassin he couldn't ask for more.

"Not really. I'm only wanted to see you since it has been quite a while for we have seen each other. Also I noticed that you have grown well" Silva said, amused at his grandson growth.

Kallua nodded, without expression. He knows that despite how much he has grown, he still had a long way to go.

Silva tone has changed to a serious tone "How's IT?"

Kallua raise his eyebrow at that, he knows the IT that is his grandfather referring to. He didn't like to have this topic but nevertheless, he answers.

"IT just fine. Stubborn and haughty as usual" Kallua said as he cross his arms and lean against the couch.

Shut up!

"I see. Well, it is too bad that I have something to do. You may go back now" Silva said as he takes some paper from his desk.

"Yes, excuse me" Kallua said as he stands then leaves without any utter word.

I hate you!

And Kallua could only smirked at that voice, feeling amused so he just said "Yeah, I know"

As Kallua made his way out of the mountain, he can't help but notice he is late now. Killia would be very angry at him right now. Seems he would have a lot to make up for his little sister, Killia would have asking another date for him to make up for making her waiting long for him.

Kallua sighed at that before running as fast as he can, hoping he can go back home faster. As he run, he suddenly notices the changes in the air pressure. It seems to be much windier as well, as Killua calculate the speed of the wind, the pressure, the weight then he began to notice that there is a spark of electricity a bit. His face now had a look of horror.

`Could it be? A dimension portal!?' Kallua thought as he stopped then looked back and he was right.

A dimensional portal that is only few centimeters hovers above and behind him, sucking everything and trying to include him. He knows that if he gets pulled inside, there would be a very high chance that he won't be able to make it back and he might be trapped inside the dimension forever. He feel stupid for stopping, he should have just continued to run to avoid being sucked inside. Quickly, he tries to bend down towards the ground and stab his hand under them so that he may be able to hold himself until the dimensional portal closes back but alas, it was too late.

He is completely paralyzed because of the unstable dimensional rift that passing through him.

`Damn, the dimension waves got me. I can't move now, this is bad' Kallua thought as he tried to pull himself together but his strength was slowly slipping away and the next thing he knows.

He is now completely sucked inside the dimension portal.