I just think about Killua's family when he was still in his mansion. They're good people (at least for each of the family member). And well I think I can assume like that by seeing some picture of them (there's one in Kalluto's flash back and the other's from the hunterpedia site). It's near no different with the other 'normal' family so I want to write the fanfic about it all of sudden. It'll be fun.

I didn't know if there's an episode which only tells about Killua's family (I think there isn't yet), I've just seen the anime until episode 98 though.

Well so I'll start with Illumi. Hope you'll enjoy

This's a little story once my family gathered together back then. Where should I start from, I think?

xxx

"Illumi Aniki, what're you doing?"

Wandering around his mansion backyard, Killua found his eldest brother laying down on the ground.
He'd never like this brother of his much, but still he liked to hold some conversation with Illumi sometimes.

"As you see, nothing. I was just back from my mission, to kill a billionaire who committed corruption". He picked a pebble nearby and threw it away lazily before he opened slightly his lips "though I just toying with him".

He turned to face Killua "Don't you think I'm tired then?"

"Not at all of course" the white haired boy walked to his brother and sat himself beside the man.

'I've studied his target figure. Killing such man'll be as easy as clap a fly to death nonetheless' he thought in mind.

"By the way Kil, your hair's already getting long is it?" Illumi looked at his little brother's hair which tied to back.

"Ah right. But Aniki's hair is longer" said the white haired boy starring at Illumi's hair "people can mistake you for being a girl, despite of your body"

"Like a girl eh?"

Hmm. Maybe this was what made him wanted and possessed the ability to change his appearance.

"Have you finished your training today?" the topic'd changed again.

"Nah, never mention it, I've had enough"

After few minutes passed, Illumi got up and said to the boy who was still sitting

"I'm off to the 'further backyard' okay? Looking for some fun"

By the word 'further backyard' he referred to the forest behind their house. It was still on the top of Kukuroo Mountain, inside the territory of Zoldyck Family after all. That meant he wouldn't find something or someone amusing there. Still, he headed there, leaving Killua played with the grass all by himself.
As he expected, nothing particular happened. What was he thinking, hoped to find a shock in this strictly-guarded mountain. There wouldn't be a single thing…

Wuushh

Illumi suddenly dodged something thrown to him by someone behind him. Turned back, he saw there was a man about his age, calmly played a bunch of cards on a tree – flying thing was now figured – as if nothing happened. Well you might have known what was the red- haired man's name.

He was Hisoka.

'Intruder?' Illumi thought to himself. But how? Like what'd he mentioned before, no ordinary people could enter here without permission. Or rather without getting themselves harmed.
But now, sitting before him was a man who made his conclusion upside down. He made Illumi eager to find out more, for the first time.

"Hello there" Hisoka stopped playing and gave attention to Illumi. "You're so skilled that you can dodge that" he pointed his finger to the card he threw earlier and smiled a bit. Well that time his expression wasn't as freak as he had now.

"Ah, pardon me, you must be the house owner right? One of the Zodyck" eyes narrowed as he said that.

Illumi thought. Yeah but, more importantly, how could he sneak into here? Did he passed through Canary? Not likely. Probably he came from other side of this mountain.

Hisoka jumped off the tree. "I'm Hisoka (meant "sneaky; secretly" in Japanese)" he said calmly to the man who hadn't make a move from the first time.
If name was supposed to decide one's character, then his name really matched him, Illumi thought. And without idle chit – chat, he opened his mouth to speak

"This card" he already picked "it might pierce through my throat if I didn't aware" Flipping the card figuring what trick behind it, he asked of curiosity "Do you put something on this card?"

Hisoka widened his eyes "So you haven't known yet?"

"About?"

"Yeaah.. to put it simply, it was just a little of Nen application. Must be a pain to explain about this from the start so I can tell you the main ideas if you're interested?" one of his eyebrow raised with his hand on the chin.

'Haha, this stranger seems to know his place. Or does he?' Illumi found Hisoka amused him more

"I'm Illumi Zoldyck, wanna come along?"

xxx

When Illumi brought Hisoka to his room in the main building, he saw Killua there, playing with the Robochoco after eating all of its content.

"Kil, why're you in my room?"

But before Killua swallowed his chocolate to reply, Illumi continued "Ah, nevermind. Meet Kossori (the synonym of "secretly") who'd successfully broken into our backyard"

Illumi didn't introduce Hisoka with a aconsideration as a friend, but as someone who stood equally as them. Also because he didn't trust Hisoka so he didn't tell Killua the real name of the red haired man beside him.
Hisoka seemed to think about it but quickly lost his interest.
That time, his appearance didn't match his current appearance, with his hair didn't slide back and no symbol of clown on his cheek, so Kilua doesn't recognize him in the future. His smile and tone weren't freaky too.

He stretched his hand to Killua. "I'm Kossori" as he said that he couldn't help to giggle in his heart

Killua was hesitant in the moment but still he accept the man's hand. When Hisoka pulled his hand from Killua's, he drew a card as if the boy was holding it when they shake hands and showed it. It was an Ace of Spade card. Killua still looked the same – with flat emotion of his face – but couldn't hide amusement that slightly emitted through his eyes.

They played together and had small talk sometimes in an unusual way but without realizing it they found that it was more than merely an 'ordinary' day and enjoyed themselves.
Then in the evening they led Hisoka back to the backyard for it was the time he must 'go home'. Or whatever he said, the Zoldycks would never believe in his word.

Though it didn't concern him a lot, but still it bothered Illumi a bit in some way, the thought about Hisoka

'Hope you'll come again to my backyard tommorow' he stared at Hisoka's figure as it became a silhouette between the darkness of the forest "There won't be as easy as today but somehow I think you'll always manage to get here anytime"

xxx

It was rainy that evening when Killua, eyed by Illumi, carried a mission to kill a director. Or whoever his target, he didn't care. He just wanted to finish this quick and immediately wipe away the scent of the blood he was going to shed. Then off he go, jumping without any fear and hesitation, with his hand in his pocket, from the top of the building as the director was heading to his car.

Slightly when door was opened wide to the director to enter, Killua tore his neck and made his landing. The director immediately become motionless, falling slowly to the wet ground. Then the white haired boy took an instant look to the witness around him before killing them easily.
He heard siren as the police'd hurriedly come but it didn't matter now for he'd hid in an dark alley nearby. He'd discard all of the evidences, and now the police'd look for him in vain.

A ball bumped to his leg. Killua picked it and some boys asked him to throw the ball back to them when Illumi took the ball from his hand and looked at him with those evil yet expressionless eyes of him.

"Remember this, Kil, never make friend with anyone"

With that he approached the boys before them

"No! Don't! Stop it, they don't have anything to do with this! No!"

But Illumi still killed them one by one heartlessly.

Killua could just stare in anger but do nothing seeing them died, sound of the blood spilled made him trembling. After done killing, Illumi walked and leaving the corpse who were just playing few minutes ago. His little brother just followed him in silence, his head hung low.

The ball was now covered in blood.

xxx

Wanted so badly to forgetting what happened yesterday, Killua walked slowly to the 'further backyard'. He didn't want to face Illumi, if it possible for the rest of his life. But it wouldn't happen.

"Ya, there" a voice appeared behind Killua.

The boy was surprised, not sensing a bit of the greeter's sign of existences. Well Hisoka'd learnt about concealing his aura with Zetsu, while Killua haven't known a single thing about nen. He remained silence as he turned to face the man.

"Hmm, what was your name again? Killua.. Good name, same as your brother"

"What do you want?" asked Killua straightly

Hisoka raised one of his eyebrow "not so important though" he approached Killua.

Sensing no strange intention or whatsoever from the man, Killua just let Hisoka walked to him and gave him something. A card. It had nothing written there, the picture on the side was just a Queen of Heart after all. No matter how hard the white haired boy stared at the card, he found it was futile.

"So.. you wanted me to give this to my aniki?"

"Hmm" Hisoka smiled in satisfication "You're smart. True but how'd you know that it doesn't belong to you?"

"It can't be a usual card with nothing inside. Because you didn't tell me anything and I too, know nothing about this card, so it must be my brother who can figure this out. The trick inside this card" he knocked his finger to the card.

"Ding Dong"

"What do you want to do with my brother?"

"Nothing particular?"

"You're not gonna kill him, aren't you?"

Hisoka let out a chuckle

"Ah of course not, don't think too far. At least I'm not an assassin like you Zoldyck"

He looked to Killua once again and left. The boy just stared at the card and at the man as Hisoka walked away. This time without having a mind to visit them again

xxx

Killua opened the door of Illumi's room as he saw his brother just staring with blank eyes to the empty corner of the room's ceiling.

"What is it Kil? Wanna kill me because of what happened yesterday? You still hate me don't you?"

Instead of answer that trivial question, Killua showed him the card he'd got from Hisoka.

"From Kossori" he said

'Kossori?' Illumi frowned a bit. 'Ah I know him'

"Oh, Kossori eh? He really is sneaky (Hisoka) huh?"

This time Killua didn't get a thing of his brother words but he let it be. Without knowing it's just a play of word anyway.

"So what's in the card?"

Illumi flipping the card without emotion –as always- before he spoke eventually "Nothing"

"Nothing?"

"Yeah, can't you see? It's just a totally ordinary card, Kil. Or you expect something amusing inside the card?"

The boy's face turned red. He didn't know if it embarrassment or anger of being fooled.

"Anyway I'm leaving. That man sure is something, just come through all the trouble just to leave you a Queen of Heart card" as he said, Killua walking to the door

"Don't mind him Kil, he's just a lucky stranger anyway, go be able to sneak into the Zoldyck house, nothing more"

The long haired man let out a sigh before looking to his brother with a warning glare

"You must not have a friend, Kil. Even a single one"

"But the man was…"

"… not my friend. Well, maybe it'll come handy if I used him as my companion in crime. Lookng closer, his ability may help me sometimes"

"What ability?"

Illumi just gave the boy a mysterious smile "not gonna mention it"

He continued " So you understand right? Never make friend with anyone. They'll betray you or be a burden to you – you can say if they're taken as a hostage- else you yourself who'd end up hurting and leave them. Friendship only bring disadvantages and troubles Kil. It won't bring any good for you. Trust me and you'll be all fine"

Starring to the door knob he was about to turn, Killua found it hard even he never thought to have a friend. Actually he wanted to know how it felt to have one at least.
But saying the opposite would drag him into a big trouble, so

"Alright, I understand, Aniki" Killua turned and said

Tilted his head a bit, Illumi replied "Good boy" as his brother walked out and closed the door carefully, leaving him in silence.

'There's no way I'll do as you please, Aniki' said Killua in his heart as he walked through the dark corridor. 'You're not the one who decide on my life. It's me and you won't get in my way'

Meanwhile in his room, feeling his brother was no longer around, Illumi picked the card and stared to it. "Now, let's see what's on the card back side.." he mumbled.

With that, he released small amount of nen to the card and some words in Hunter text began to appear there.

"I'm off preparing myself to take Hunter examination, Illumi. Interested to take it to? Ah I know you are. Well let's see each other on the upcoming won't be long you know.

Just in case if you need my number. Feel free to contact me anytime, this'll help in Hunter examination. Let's work together then. If you don't want, just rip the card."

Below the words there was a clown emo of Hisoka. And his number too.

'Never make friend with anyone' thought Illumi.

But instead of tearing the card, he slid it under his pillow.

'I'm not gonna make friend with him' he spoke to himself as he stared to the corner again 'he's just a companion in crime after all'

xxx