Disclaimer: None of these characters belong to me. You will see hints of OCs but they will be very obvious when they appear. This is also a crossover story, meaning different anime and cartoons interact within the same area. Here is a reference sheet of the characters that will be starting out: art/Unexpected-Travels-489099808?ga_submit_new=10%253A1413589532 Who knows, maybe a favorite character of yours will pop up. Enjoy the story!

Chapter 1: Remembrance x New City x Mysterious child

Gon, it's been almost half a year since we parted ways. There are times where I wish I could've tagged along with you and Ging, but I knew that you guys needed to catch up and that I had to look after Alluka. How have you been recently? I remember last time we exchanged emails, you said something about Ging discovering some type of new burial chamber. Have you guys gotten any information about it? What about Ging? Is he still the same? Of course he is.

Me and Alluka are doing fine ourselves. We traveled to some weird place outside of the map called 'America'. Never heard of it? We hadn't either 'til we discovered that there are still a lot of places that us hunters haven't even touched yet. America has its ups and downs. It's very populated and has a lot of shops and food choices, but the people can be stubborn and lazy. Really lazy. They liter all the time. Shows how different we are over than them.

Currently, me and Alluka are staying in some city called 'Levinin'. It isn't as crowded as previous cities we had visited but it is still pretty cool. Of course, we have to stay for a while 'til I figure out how to make some more money, cause I am running low. There seemed to be some small jobs around, so I think what money I have left can keep us in the hotel for about a week or so before we continue our travels.

Gah, Alluka is hungry. I gotta go now. Hope things are interesting on your end. Take care.

–Killua

The white haired boy sighed once before hitting the send button on the email, smiling in excitement. He and Gon had been exchanging emails quite frequently and that all just made the other thrilled to see his best friend's progress and adventures. Killua logged off the computer and turned to Alluka, who had been tugging on her brother's sleeve for the past few minutes.

"You ready to go?"

"Mhm! I'm starving!" Alluka clapped her hands together and closed her eyes, smiling. Killua chuckled as he got up and pushed his chair in. Alluka did the same and rushed to her brother's side, walking with him out of the internet café. The two were currently in the heart of Levinin, with rushing cars and people on both the sidewalks and the streets. Killua held Alluka close as they looked around and progressed their step on the sidewalk.

"Anything you specifically want to eat?" Killua looked down at his sister, who put her finger on her chin.

"Hmm, isn't America big on their burgers? Is that what they are called?"

"Yeah, but if we get that, I will have to split it with you. Who knows what that could do to your body" Killua laughed and scouted the area for burger joints. "Does it have to be a sit-down place or can it be fast food?"

"Fast…food?"

"Yeah, you know, they food that takes about three minutes to prepare and serve. I heard it's pretty good for people traveling."

Alluka looked up at Killua and gasped. Food coming out fast was itself a dream come true.

"Let's go to a fast food place then! Then we can go explore the town some more!"

"Sounds good to me." Kil nodded and looked around, before spotting a Burger Queen just ahead of them. Picking up his pace, the boy began to walk faster, for he too was hungry, and hadn't eaten since breakfast earlier that morning. Alluka noticed the increase of the pace and did her best to keep up, even if Killua's 'fast walk' was like a fast jog for the sibling.

"Onii-chan! Why are you going so fast!?"

"Aren't you hungry? I am try to get us to the place before it gets too crowded, or else it will just be like waiting in a sit-down restaurant. Hmm, let's just carry you instead." Killua stopped and bent over, letting the small sibling crawl up his back and get a firm grip. With that, the boy began to run.

Shortly after the two children got their food, they nibbled on their burgers as they explored the city. There were tall office buildings and massive museums around, as well as little rest stop areas like coffee shops and internet cafes. There was a monument in between two of the work office buildings that had a fairly good among of space. There were benches around it and a small playground for kids.

Killua thought this would be a good place to take a break, as he set Alluka and patted her head.

"You can play on the playground for a little bit, I need to catch my breath."

"Ok Onii-chan!" the girl beamed as she scurried over to the playground set. Smiling in her direction, Killua looked at the girl before sighing. He was glad to be with her, instead of having her stuck in the basement of his home, only to be used as a tool for his assassin family. She was having the time of her life too, which also put the boy at ease.

Stretching out his arms and legs, Killua crosses his feet and put his hands behind his head, slumping over on the bench. He looked up at the monument, which happened to be a rather tall man with what seemed to be giant circles on each side of his head. Killua thought it looked stupid.

"Guess people in America look funny as well. Wonder why they chose this person to be the monument." He shrugged it off before closing his eyes, not realizing he was sinking into a light slumber.

Gon, what are you doing right now?

"Onii-chan!"

Killua's eyes shot open as he quickly sat up from his bench, looking in the direction his sister's voice came from. He noticed her running to him, with an expression of both fear and panic written all over her face.

"Alluka! What happened? Are you alright?" He got up and embraced the sibling as she jumped onto him, trembling.

"Th-There was a scary boy at the swings."

"Did he try to hurt you? Did he say anything to you?" Killua could feel some anger rising up in him. He shouldn't have let his guard down, especially in an foreign area such as this.

"Well, I saw that he was by himself, so I asked if he wanted to play, but he looked at me with a scary face! I felt scared. I haven't seen anyone with a look like that before!" Alluka buried her head into her brother's chest as Killua bit his lip. The fact that the person even had the nerve to give his sister a look of threat pissed him off. Whoever the kid was, he was probably one of the normal people who lived within the city.

Putting a hand on her should and another on her head, Killua gave his sister a confident smile, hiding the anger that boiled within.

"Don't worry. Your big brother will handle this. Here, sit down where I was and don't move. This shouldn't take long." Alluka nodded as did as she was told, placing herself on the bench and putting her hands into her lap.

"Be careful Onii-chan."

Killua gave her a thumbs up, before turning around in the opposite direction, revealing his face of anger. He hadn't hurt anyone for a while now, but he wasn't afraid to start that back up for his sister's sake. Whoever this hot shot was, Killua was going to deal with them, personally.

As the white haired boy stepped on the playground, he looked around for the swing set. Finally, behind the slide he noticed a boy…or was it a girl? He noticed the person silently swinging. They reminded him of the monument he saw earlier, except this person's looked like potato chips and they were in the place of where the ears should have been. He also had a hat on backwards and long hair. Half his head looked like it was shaved off, which was a style Killua noticed with some other people as well.

He wore some weird crucifix sweater with some long jeans and some all-star chucks. He overall didn't look scary like the preteen pictured him. But one thing was off, his eye. They were literally endless. They seemed drowsy like, but at the same time, deadly.

Killua clenched his fists and he stepped away from the slide and confidently walked up to the child. The other just continued to swing, as if no one was even there. Either he wasn't aware of Killua's presence, or he simply did not care. Killua stopped right in front of where the person swung and made sure they didn't have any room.

"Hey, were you the one who threatened my sister?"

"…" The person appeared to stare off into space, looking at the ground rather than the boy in front of them. This pissed Killua off, as he grabbed the other by his sweater and pulled him off the swing.

"Don't act like I'm not here! You better answer me!" Killua clenched his teeth and tightened his grip on the other. The person, however, didn't seem to be alarmed as he looked up at the other, revealing his empty sky blue eyes.

"…I didn't say anything."

"BAAAKA! She said you gave her a look that scared her. I consider that a threat." He took his other hand and shifted it, making his nails sharper. He held this hand to the other's face. "I don't like it when others bother my sister, and I really don't like smart asses that act like they didn't do anything. Watch yourself, or I will kill you."

The other person kind of rolled his eyes and sighed, waving his hand off at the other. What was weird was the fact that during the whole time, his facial expression never changed. No fear in his eyes, no remorse, nothing.

"Okay."

Killua growled as his face revealed more anger.

"Do you think this is a joke?!" The person just simply looked back at him.

"I'm saying ok, I won't look at her again. What else do you want from me?"

"I want you to cut the prude attitude!"

"Prude attitude? But, this is just how I am. I come from a family of 'prudes'. It was how I was raised. Also, if you are referring to how my stature was when you threatened me, then I wouldn't call that being prude. That's called 'keeping my cool'. You see, your threats don't mean anything to me, and they probably never will to be quite honest. Not saying that you couldn't kill me but I think it would be very unlikely. Besides, I don't think you'd want to fight someone like me." This whole statement made Killua raise his sharp hand up and glare at the other. But something about the statement made the boy hesitate. It was as if, deep down somewhere, he felt like the other was right, despite of not knowing anything about them. Taking a deep breath, Killua shifted his hand back and put it in his pocket, before changing his facial expression back to normal. He still kept his grip on the other though.

"I have killed many confident people like you before, so what's to say you aren't like them?"

"I never said I was confident. But most likely, those people were amateurs using their brawn rather than their brains." The person looked at Killua. "Do you kill people for a job?"

"I used to. I don't anymore."

"I see…" The person put his hand under his chin, thinking. Killua looked confused. What could the other possibly be thinking about? And another thing, why was it so hard to hurt this kid? Normally, Killua would've killed the person right on the spot, but for some reason, something felt different about this boy. Even though he made a 'prudish' statement, he didn't seem like an overall threat, at least for now he didn't. Also, Killua took the person's eyes into observation.

They were empty for sure, even menacing, but it wasn't really meant to be inflicted on others. It looked more like displeasure with the person their self. He must have had a hell of a past, as far as the eyes tell.

While the person still pondered in his thoughts, Killua released his grip and put both of his hands into his pockets.

"What's your name?" he asked.

The figure looked up and snapped his fingers.

"Ah, it makes sense now."

"HEY! I'M TALKING TO YOU!"

"Oh. Mighty." He nodded.

"Mighty? That's an odd name. Well I'm-"

"Killua…"

There was a silence as a breeze rushed past them. Suddenly, Killua felt uneasy. The atmosphere had changed.

"How did you know?"

"Secret" Mighty nodded and put his hands into his pockets. "Let's just say its part of a gift and a curse."

"That's crazy…" Killua muttered and looked away. "Well, now that you know my name, I should introduce you to my sister." His eyes shifted. "Odds are, you probably know her name as well."

"Mmm…I do owe her an apology. Perhaps I should clarify things with her too, so she can understand that I wasn't trying to threaten her." Mighty put his hand underneath his chin again. "What a small pickle this is."

Killua stared cockily at the other and rolled his eyes. This person was weird for sure. He was some notches under Gon.

"Alright, let me introduce you to her then."

"Okay."

The two walked back from around the playground, approaching the younger sibling who was fiddling with her fingers on the bench. Alluka noticed the shadows as they changed the tint of her skin a shade darker, and looked up. At first she smiled to see her brother back, but then she began to tremble again as she shifted her sight to Mighty, who had his normal blank look. The girl couldn't help but to look down at her knees.

"Alluka, this is Mighty. We cleared things up and everything is going to be ok." He smiled, softening his voice to calm his sibling. Alluka looked back up with a weak smile. What happened next caught her off guard. Bowing in front of her in an apologetic manner was Mighty.

"My apologies for the scare. I didn't mean to look so intimidating to you. In fact, I actually did want to play, but you ran away before I could answer. Not many people ask me something like that, so it took me some time to register your words." He rose up and gave her a small smile. "Please forgive me."

Alluka stared at the other for a moment before smiling wide.

"Hey Mighty, will you be my friend?" Killua tensed up a bit. He hadn't realized that she could ask Mighty anything now that she knew his name. However, the question wasn't really terrible, which made the preteen feel a bit more at ease.

"Sure, if you will be mine." Mighty kept his smile as he nodded. Alluka clapped her hands together and looked at her brother.

"Onii-chan! I made a new friend!" This made Killua smile, as he looked from Mighty to Alluka. The fact that Mighty demonstrated such patience made Killua feel a form of respect for the other. Something about him made Killua want to get to know him better, and he felt Mighty felt the same way. After all, Mighty could have easily tried to flee the situation or say something stupid to Alluka.

Who is he?

The three walked around the city as Mighty showed them some more sights. They went to the docks of the city, inside one of the museums and even on top of one of the office buildings. Alluka had been excited since Mighty agreed to be her friend, and held both his hand and Killua's as they continued to tour the city.

It was a calm evening. Traffic had calmed down and the amount of people on the sidewalks decreased. The sound of stomach's rumbling could be heard between the three of them.

"Onii-chan, I'm hungry…"

"I am too, sis. Hey Mighty, any places we can eat around here?"

"Well, there is a frozen yogurt place a few blocks down…if you guys are into sweets."

Killua's eyes widened and he gave the other a weird cat-like expression.

"I live for sweets." Mighty chuckled at this statement.

"Really? It's funny because that's basically all I eat."

"For real?! If only I could get away with that!"

Alluka stood in the middle of the two boys chatting away about their love for sweets. She felt a little bit confused, since she herself didn't eat a lot of sweets, but regardless, she was happy to see Killua interacting with a new friend. Ever since Gon and Killua had parted ways, she could tell that Killua felt distant from a lot of things. He put on his happy persona for her, but while she wasn't looking, the boy looked lonely. He would always brighten up when they went to the internet café and saw the emails from Gon. He felt even more distant though when he had to end his emails and leave the café, knowing that he had to wait some time for his best friend to reply.

Seeing Killua act the way he was now calmed the girl and made her feel less anxious about her older brother's well-being.

"Ah, here we are." Mighty said as he pointed to the frozen yogurt place. The three of them entered the place with eager smiles. Inside, a selection of flavors were available on the side of the wall, with a stack of bowls on the side. Next to the bowls were the toppings, white included chocolates, cereals, candy, fruit and of course, sprinkles.

Each child rushed to get their bowl and loaded them up with all sorts of unhealthy choices, not having a care in the world.

"Don't worry about money, I'll treat." Mighty placed his bowl on the scale along with the others.

"You don't have to go through that trouble!" Alluka tugged on the boy's sweater with a worried expression.

"It's not a big deal. I have plenty. Let's just say I come from the upper class."

"Oh! Like us!" Alluka smiled. Killua had his hands behind his back while the Mighty payed for the meal. He's rich, obviously. But for what? He doesn't seem like the type of person to do anything special.

"Here." Killua snapped out of his thoughts when he saw Mighty holding his bowl out to him.

"Oh thanks." He took it and looked away.

"Did you guys want to sit here, or walk around?" Mighty said as he took a small bite of his food.

"I'm exhausted from all that walking…could we stay here and eat?" Alluka looked from Mighty to Killua. The white haired boy just shrugged.

"I don't mind."

With that, they all took went to one of the tables and took a seat. At first they were all silent. Alluka happily at her food while Killua ate his, occasionally staring at Mighty who was calmly eating his food. Killua put down his spoon and cleared his throat, leaning back in his seat and crossed his arms.

"So, Mighty, I have a few questions."

Mighty slightly looked up at him then gave a nod.

"Okay."

"First question, are you a boy or a girl?" It wasn't really important, and he didn't care either way, but he really did have a hard time telling.

"Boy."

"Huh….okay. Second question, how old are you?"

"I just turned thirteen a few months ago." Wait…HE'S YOUNGER THAN ME? He sure acts way older than his age, and his confidence is a bit too high for my liking.

"Third question, why were you at the playground?"

"Can I swing at a park? Is that illegal?" Mighty answered the question calmly as he continued to take bites of his frozen yogurt. That wasn't the response Killua was looking for either.

"I'm being serious! You were there by yourself and you just so happened to be right there when my sister asked you to play. Then you had the guts to say dumb things about not standing a chance against you! And to top it off, you happened to already know my name!"

"Onii-chan please…" Alluka saddened as she looked at her older brother's facial expression. It was filled with anger but at the same time, confusion. She thought things were going to be ok, but maybe Killua just put on the persona a little longer and couldn't hold it anymore.

"Why is this all happening? Why didn't you run away when I approached you? You just stayed in your place, like nothing important was happening." Killua put his fists on the table and glared at the other boy, who finished his frozen yogurt and folded his hands, putting them under his chin for a rest.

"Not many people have the balls to face me like you. Normally, people take a glance and run away. In fact, with my current reputation, people will either only talk to me for business purposes or family matters. Other than that, they don't want to really have anything to do with me. They love what I do for my family, but don't appreciate me as a person." Mighty sighed and closed his eyes. "When you came up to me, I couldn't help but to get excited, since you are the first person to actually try and take me on, and better yet, you are the first person around my age to hang out with me…if you consider the sightseeing and this ice cream break 'hanging out'." He opened his eyes and looked at the white haired boy, who couldn't help but to stare.

"Who are you, really?" Killua kept his stare on the other. Mighty sat back in his chair and ran his hand through his hair.

"I can't tell you that right now."

"Why?"

"Because, I don't want you to judge me like everybody else does." Mighty played with one of his strands as Killua growled and clenched his fists. He got up and took Alluka's hand.

"Alluka, we are leaving."

"B-But Onii-chan! What about Mighty?"

"He isn't worth it, now let's go." Killua pulled his sister out of the frozen yogurt place, leaving Mighty where he sat.

The two siblings walked at a fast pace along the sidewalk, while the sun began to set in the sky. Killua knew he couldn't talk to his sister right now, since she was probably upset about what happened. She didn't understand Killua's feelings about the whole thing, however. Something about Mighty was off, and he didn't like it. He felt like if he had stayed around him any longer, he would've told him more information about the two sibling's names as well as their pasts. He didn't know what kind of power the kid had, but just the fact that an outsider who knew nothing about him knew his name, gave Killua an uneasy feeling.

Killua also couldn't bring himself to kill him either. One, because Alluka was there and two, he somehow felt an odd connection to the other, despite of their short time together. Killua hated that, and he wasn't about to let anything dangerous happen to him or Alluka while they traveled for fun.

Killua checked Alluka and himself into a hotel along the docks. The boy put the key into the slot of their door and opened it, revealing two beds, a small TV, a window on the wall, and a bathroom. It wasn't much, but it was enough for them to sustain for the week.

Sighing loudly, Killua set down his bag and lied on the bed. Alluka ,however, did not move from her spot. Killua knew this for a fact; since he didn't hear her footsteps follow along with his.

"You should get some sleep, this is going to be a busy week for us. Plus we have more exploring to do!"

"No. Onii-chan is mean." Alluka clenched her fists as she stared at the floor. This caught the boy off guard, as he rose from the bed and looked at her.

"Look, I'm sorry. But I did the best thing for us. He could've hurt you if we didn't leave like we did-"

"You didn't even give him a chance! You completely missed what he said! He just wanted to be friends!"

"How can you be sure?" Killua got up and walked to his sibling, patting her on the head. "He was very suspicious, and I didn't want that turning into something even more dangerous"

"He said so himself, between the lines. If I could pick that up, then you probably could too!"

"Alluka, I just don't feel like talking to him is a good idea…"

"…Is it because of Gon?"

Everything stopped. The air suddenly got thicker, making it harder for Killua to breath. Did he hear that correctly? Did Alluka just mention who he thought she mentioned?

"What are you talking about? Gon isn't here." Killua mustered up a weak smile and scratched the back of his head. Alluka continued to stare at the floor.

"You are scared, because you had to let Gon go. So you fear of making anymore friends, knowing that one day you will have to let them go too." Alluka looked back up at her brother, revealing small tears. "I can tell that you wanted to open up to him, but you were scared to. You noticed how he was scared himself? Maybe he feels the same way and let someone go himself." She took his hands and held them tightly.

"Don't throw away your potential friends Killua, please. Give Mighty a chance."

Killua couldn't help but to tear up, quickly wiping his eyes before any tears fell.

"Okay, tomorrow, we will explore and try to find him."

"Really?!" Alluka beamed, her eyes twinkling. Killua weakly smiled and gave her a thumbs up.

"That's a promise."

All done. Tell me what you guys think! Review 'til your heart is content! Seeya next chapter!