Disclaimer: I don't own HxH, if I did I would kidnap Killua and elope with him to the other side of the world ^^ Damn…..Why aren't you mine Killu?! Togashi, since you're the owner of Killua, you better take good care of him !

Killua was sitting on a tree branch and was watching his two younger siblings underneath him playing. He was trying to read but couldn't really concentrate because he had to make sure that they didn't get too far away, the forest was big after all. Under the tree was leaning Canary, the female butler apprentice. She had the task to make sure to stop intruders and she was looking as well at Kaullo and Alluka.

"KYAAAA!" Killua was startled when he heard Kaullo screaming. He jumped down from the tree branch and ran towards his siblings.

"Kaulllo, what's wrong?" He asked.

The cross dressing boy stood up and turned around to face him, revealing his teary eyes. "O-Oniisan, monster! Kaullo is scared!" He ran towards Killua and threw himself in his arms.

Killua looked at Alluka-No Nanika-and sighed. "Listen Kaullo, that's not a monster," He said as he absentmindedly stroked Kaullo's braided hair.

Kaullo sniffed and looked up. "No monster?"

Killua shook his head. "That's Nanika." Kaullo blinked and looked at him confused. "She is really nice, you shouldn't be scared of her."

"But Nanika ate Alluka!"

Killua smiled. "No she didn't, Alluka is now asleep." Killua decided to explain Kaullo about Alluka's power. When he was done Kaullo looked at him with wide eyes before looking back at Nanika. Kaullo took a step towards Nanika before looking at Killua, who nodded at him. Kaullo kneeled down in front of Nanika. "H-Hi Nanika. Sorry that Kaullo called you a monster," He apologized.

Nanika smiled. "Kay! Nanika is not mad!"

Kaullo smiled. "Love you."

"Love you too!" Nanika smiled as well. They gave each other a friendly hug. Killua sighed in relief.

"Kaullo, you should not tell anyone this!" Killua told him seriously.

Kaullo blinked as he saw the serious look on his brother's face but still nodded. "Kaullo understands."

Nanika turned to Canary and was about to say something to her.

"Okay, we're playing now," Killua said quickly. "Come on Nanika, Kaullo." He successfully distracted Canary, if only a little.

"Okay, Killua catch Kaullo for me, please?" Nanika asked, using her power on Killua and away from the poor girl.

"Sure." Killua smiled at her kindly before turning to Canary. "Canary, please don't tell anyone what you saw. Thanks." He ran off to find his sister.

"WHAT ARE YOU DOING?! YOU CAN'T LOCK ALLUKA UP! SHE'S MY SISTER!" Killua shouted angrily. He just found out that his parents somehow found out about Alluka's power and tested her, trying to see the limits off her power, killing many servants by doing this. Kaullo was crying as he was clinging to Killua's arm.

"Of course we can do that. Alluka is not able to control his power right now. We don't know what he can do in the future." Kikyo said. "There's a change that he can destroy our family, we can't let that happen. Do you understand?"

Kaullo looked at his mother confused. Wasn't Alluka a girl? "Then we just have to teach her! Not lock her up!" Killua argued.

"Kil!" Kikyo screeched. "You will obey me! Stop acting like a brat!"

Kaullo shivered when he felt Killua's angry aura as he glared at their mother. The older boy threw one last glance at the locked steel door and swore to himself that he would become strong enough to protect his little sisters. He grabbed Kaullo's hand and walked out of the room angrily.

"Oniisan…." Kaullo hesitantly grabbed Killua's sleeve. "Is it Kaullo's fault that Alluka is getting locked up?"

Killua looked down at him. "Of course it isn't Kaullo." He placed his hands on Kaullo's shoulders. "It's our parents fault, not yours."

Kaullo looked up at him sadly. "Gomenasai… It would have been better if Kaullo was locked up instead of Alluka. Kaullo is completely useless. Kaullo can't run as fast as you or fight…." He apologized.

Killua didn't answer and wrapped his arms around Kaullo."You're not useless. And we will visit Alluka sometime," he whispered.

Kaullo wrapped his arms around his necks. "Love you."

"Love you too," Killua answered back. He frowned when he realized that Kaullo's training would soon start and that he hasn't said anything yet. He secretly hoped that he wouldn't get trained like Alluka but he got the feeling that he would and he had no idea how to tell Kaullo this. He frowned darkly.

Kaullo stared in front of himself as Elilou was braiding his hair in a braid. "What's wrong Kaullo-sama?" She asked.

Kaullo sighed. "Kaullo has been wondering why everything is so weird here."

"Weird?"

"Why does Kaullo's food have such a weird taste? Even Oniisan has been complaining about the food taste. And then there is the fact that Kaullo's barely sees mother, father and my other brothers during daytime. They're always out of the house, just what kind of work do they do? And why is Kaullo not doing the same thing as them? Kaullo doesn't want to be left out!"

"Oh believe me, you will start soon." Elilou tied the end of Kaullo's braid with a green ribbon. She sighed as she kind of felt bad for Kaullo. His training would soon start and the innocent boy didn't even know that his family was a family of famous assassins. "What do you want to wear, Kaullo-sama?"

The boy shrugged. "As long as it's a dress or kimono it's alright. After all, mother seems really serious about Kaullo dressing and acting like a girl."

"And what about you?" Elilou rummaged through his closet and took out a light green kimono. "Do you like wearing girl clothes even though you're a boy?"

"Kaullo doesn't know. Kaullo just has to do like mother wants. Because if Kaullo listens, mother will be happy. And Kaullo wants mother to be happy," Kaullo answered innocently.

Elilou sighed. She didn't like the fact that Kaullo's mother was brainwashing him. He might become like Illumi and Kalluto and there was nothing she could do. After all, she was just his personal servant. Her task was to take care of him, nothing else.

Someane knocked on the door. "You can enter," she answered.

The door opened and Kalluto walked inside. Kaullo, who loved all of his siblings(Even Milluki), said his name happily and wrapped his arms around his older brother. Kalluto, who already has been quite used to Kaullo's ways of showing affection, said, "Aniki is waiting for you.. He wants to learn you something."

Kaullo tilted his head. "He does?"

"Yes."

"Kay!" Kaullo gave Kalluto a peck on the cheek. "Bye, bye Kallu-nii!" He skidded out of the room with a smile on his face. He walked into another hallway and saw his eldest brother leaning against a wall."Aniki, you called Kaullo?" He asked.

Illumi opened his eyes and turned to face him. "It's time for your first training."

"Training? What kind of training?" Kaullo was really confused. Did his family have training to do their work good? If that was the case, he would do his best. He wondered what kind of training it was though.

Illumi picked him up and started walking into another direction. They walked into hallways that Kaullo has never seen. The boy blinked as Illumi stopped in front of a door. "We're here," He said.

"Where?" Kaullo asked.

When Killua entered Alluka's room and saw that Kaullo was at the other side of the room kneeling down in a corner, he immediately knew that something was wrong. Alluka was standing in the middle of the room, looking at Kaullo worriedly. Normally she would turn around if she heard the door open and hug him if she knew that it was him. But today she didn't even look up.

"Alluka? Kaullo?" He asked, confusion in his voice.

"Oniisan…." Alluka turned to face him. "There is something wrong with neesan, she has been ignoring me for a while and has been sitting there without moving."

"Let me talk with her." Killua walked up towards Kaullo and kneeled down in front of him. He gently placed his hand on Kaullo's shoulder. "Kaullo, what's wrong?"

"Go away…." Kaullo's voice was cold and there was no hint of the usual happiness that his voice possessed. "Kaullo wants you to go away."

Killua didn't give up though. "Kaullo, if there is something, then just-"

"GO AWAY! LEAVE KAULLO ALONE!" Kaullo screamed, still looking at the wall. Killua was so surprised by his outburst that he let go of Kaullo's shoulder and landed on his butt on the ground.

"Kaullo? What's wrong?" He asked.

He saw that Kaullo was shaking. And then the boy started to sob uncontrollably. Killua and Alluka shared a look before looking back at the crying boy. Killua didn't like seeing his sister like this. The Kaullo he knew was always smiling and only cried when it was time to sleep. The only logical reason she would cry like this was if she-No…

"Kaullo, did you have your first day of training?" He asked hesitantly.

It was silent for a while before that Kaullo turned around and nodded. He turned back around and continued crying. "Kaullo wants you to go away," He said.

"No, I'm staying here." Killua sat down behind him in indian style. "I'm sorry you had to go through training today, Kaullo. I can't promise you that it will stop, because it won't, but I can promise you that we can go through this together." He said. He reached his hand out, wanting to pet Kaullo's head like he always did when the boy was sad, but Kaullo yelped and shielded away from his touch. Not from anger, but from fear.

"S-Stay away…You're like them! Kaullo doesn't trust you! Because if Kaullo trusts you, you will hurt him like mother and father!"

"I would never hurt you Kaullo. The reason why I didn't warn you was because I hoped you wouldn't get any training. I was hoping that you wouldn't get trained just like Alluka. Not locking you up but not training you either. I know that it was stupid, I'm sorry."

"You should have told me!" Kaullo said angrily. "Hate you."

"…."

Kaullo slowly turned around and saw that his older brother was looking down, his bangs hiding his eyes. "Gomenasai Kaullo…." He muttered. "I'm a bad brother…." Killua started shaking and tears were streaming down his face. "I should have been a better brother. Gomenasai."

Kaullo sat down on his lap and reached out and wiped away the forming tears in Killua's eyes. "You're maybe not perfect, but for me you are the best big brother in the whole world!" Killua looked at him with teary eyes. "Kaullo loves Oniisan this much!" Kaullo spread his arms wide. He wrapped his arms around his brother. "I never meant to make you cry. Gomenasai."

"It's not your fault," Killua wrapped his arms around Kaullo. "Let's just forgive each other and deal with this together, kay?"

Kaullo sniffled before that he spoke, "H-Hai…" He hesitated before that he said his catch phrase, "Love you."

Killua smiled. "Love you too."

Kaullo rested his head on Killua's chest and as Killua rubbed his back, it wasn't so surprising that he fell asleep a few seconds later. Killua turned around so that his back was against the wall and motioned Alluka to come over. The girl grinned and cuddled up against him.

After a while Killua woke up because it was time for him and Kaullo to leave. "Oniisan, come back as soon as you can okay ?" Alluka whispered, careful not to wake up Kaullo.

He nodded. "Sorry that we couldn't play together this time," He apologized.

Alluka smiled and shook her head. "It's alright." She looked at Kaullo. "Neesan needed you today."

Killua stood up, carrying Kaullo princess style and said goodbye to Alluka. He carried Kaullo back to his room, planning to sleep together with his sister today. He looked down at his younger sibling and sighed. He could only be there for his sibling as moral support, and he hoped that it would be enough.

A/N: Ok, I have rewritten this chapter 2 times because I didn't like it. Besides, are you surprised that Kaullo is transgendered ? Or did you kind of expect it already ? Let me hear your thoughts. Killua will refer to Kaullo as a girl.

And I will refer to Alluka as a girl,because I refuse to believe that she's a boy*stucks tongue out*So if anyone dares to tell me 'No! Alluka is a boy!' I will get pissed. Also, as you see I have introduced a new Oc. Her name is Elilou and she is Kaullo's personal maid. She will appear in the next chapters. Totally off topic : I was listening to 'Love like woe' by the Ready Sets. I don't care if that song isn't new anymore, it's one of my favorite songs. Did you already hear it? ^^

Also for those who are wondering how Kaullo looks like : He has light brown hair that reaches his back(He had to make it grow long because Kikyou wanted too, btw is it Kikyo or Kikyou ? I'm confused) he mostly wears it in a braid with a green ribbon at the end(I think that you already guessed that green is his favorite color XD) .And he wears a light-green kimono decorated with yellow flowers. I am still busy thinking about what kind of Nen type I should give him. Any ideas?

Ok,sorry for my rambling(I just love writing so much ^^).

Answer to Guest : We all want that,trust me.I was frustrated when during the Zoldyck arc Killua just walked past Kalluto without even looking at him.

And when he returned home to get Alluka,he could at least have taken Kalluto with him*sob* Defiantly some KilluaxKalluto moments in this fic(I mean sibling fluff of course O_o)