Hello all. Zerocooldemon here.

Summer's at its end. But that's not the purpose of this fanfic lol. This was a request fanfic for the following couple: Killua x OC (in this case, name: Saika Dunmer)

But hey look at the timing of this fic, I should name this 'Back to school-last minute-two shot story.' XD

Disclaimer: I do not own Hunter x Hunter, the anime or characters—nothing.

Note: Killua and Gon are still 12 years old, so is Saika. Also 'spiky haired kid' is Gon.

Chapter 1: Saika

Killua and Gon were throwing back branches and stomping through dead leaves while they were stranded in a forest not too far away from their vacation resort hotel.

"Great, we're lost." Killua huffed.

"We're not lost Killua, we're just appreciating nature." Gon, who was leading the way, looked back at the silverette.

"Appreciating nature doesn't take two hours! I told you we should have went to the saunas instead of exploring this wilderness that encloses the entire place." The assassin complained.

"But those places are always so stuffy…"

"That's the point baka—hey why'd you stop?" Killua picked up his pace to stand equal to the other kid and note the hold up. What he noticed was indeed absurd. A cave in the middle of the forest which also appeared to be leading underground. If that wasn't out of place, then there was also a desolate purple bag at the foot of the entrance of the cave. He creaked his head to the brunette wondering if the other was thinking about the same thing he was. Gon returned the look and after two seconds with a wide grin following after.

"It's not much of a vacation if we don't explore!" The spiky haired kid simply claimed before running ahead again and entering the cave.

"Hey wait up!" Killua eventually joined him as well. Unbeknownst to them, there was a small silhouette high on the tree observing the two. They walked down a straight path inside the cave as the light slowly dimmed. Ultimately, the path diverged and the kids had to choose from left or right.

"On three." Killua instructed. "One, two…"

"Left." "Right." Gon and Killua both called out their direction respectively.

"Not again Gon. Didn't you learn from the hunter exam that people often chose left when they're lost?"

"Oops, my bad. Let's go right then." Gon sheepishly laughed as they began walking down the right path. "By the way, I wonder where the other guy is."

"What other guy?"

"The one whose backpack was outside." The brunette answered.

Kiru only shrugged indifferently. "Who cares, as long as there's something interesting in this damn cave—I mean we're already lost, don't wanna make it worse."

While they were waltzing in the dark, a small spark of light flashed ahead of them in a distance. 'A way out?' Killua pondered. As they approached the light source they recognized countless small pebbles of light embedded into the stone walls.

"Uwah…crystals…? Check it out Killua!" Gon gawked at them and even attempted to pluck one out but the tiny rough spheres were completely glued in to the wall.

"I know." The silverette observed them too. He also noticed a track on the ground below them that lead to a cliff where the track was terribly cut off. "What kind of mine is this?" He peered at the dead end and the pool of pitch darkness beyond the cliff.

"It's most likely abandoned. But anyways, do you think they'll mind if we take some of these back to show Leorio and Kurapika?"

"Listen to yourself, just who exactly is here besides us? Do whatever you want." Killua deadpanned.

"Or we could always show them our Hunter License to get away with it." Gon joked trying to pick at the crystals again.

"This is boring." Killua stuffed his hands in his short pockets and kicked a pebble off the cliff with a pout. He took a step to walk forward but froze in place when he swore something rumbled underneath his foot. As he rotated his head back to the examine the area under the cliff, a huge stone fell from the ceiling two inches besides his foot, evoking a crack on the ground he was standing on (which was already a cliff). "Gon!" He shouted to get the other's attention immediately and call for them to escape.

Gon cluelessly turned towards him when another boulder nearly hit the silverette's head causing him to hop to the side. "Killua! Hang on!" He ran in the direction of the other but unwillingly halt when yet another rock crashed near him.

"Just get out! This place is collapsing!" Killua yelled, ready to march forward again and join his friend but before he could make it the cliff shattered, sending him backwards. 'Crap!' The kid cursed as his body wasn't obeying him anymore and instead was descending at the command of gravity.

"Killua!" Gon's voice was the only thing he heard before the darkness surveilled him.

'Ouch.' There was a negligible amount of pain in the back of Killua's head while he lay on the hard solid ground. He slowly creaked his eyes open to hope for something less than pitch blackness and was speechless at the color right in front of him. Grey. A light delicate grey. The silverette blinked his eyes to awake his conscience and figured those grey spots to be a pair of wide eyes belonging to a face that was merely inches away from his—staring down at him.

"Eh?!" Killua immediately jolted up, afraid he had encountered an apparition in the depth of the cave. However, upon doing so he apparently ended up busting his forehead with the other kid's who was around the same age as him.

"Itai…" The small figure wearing a red beanie groaned. "Geez what were you thinking? Why'da do that so suddenly?" The newcomer rubbed her forehead.

"I should be the one to say that. Who normally wakes a person up like that?" Killua che'd. "Where did you even come from? What are you?" He looked around the not-so-wide space that surrounded them—still inside the cave, only deep down with a bunch of immobile rocks.

The other stared at him for two long minutes before answering any of that. 'He looked so much better in his sleep.' The aquamarine haired kid shook her head in disappointment. 'But I get it…he must be the rich spoiled type, right?'

"Hey, I asked you a question." Killua reminded.

The kid sighed. "What does it matter anyway? For the same reason as you, what else?"

"Then when did you enter? We didn't see anyone unless—" The assassin automatically recalled the backpack in front of the cave. "Wait, then that backpack was yours…"

"Hn? Oh, finally figured it out huh?" She smiled.

"But there was a cliff…" Killua mentioned.

"Ah, what can you say, there's cliffs all over the place." The girl simply dodged the question with a proud smile.

"Whatever." 'We're stuck here anyhow now. Tsk.' Kiru frowned. He turned his eyes towards the wall a few feet away from him. 'Well we can always bust our way out…but we're not sure if there's even a forest at the other side…'

"Ah, now we're stuck here." A voice mimicked his thoughts and grabbed his attention. Killua turned back to his unwelcomed cave-mate. "That's probably what you're thinking isn't it?" She grinned. "There there, I wouldn't fret if I were you because you can thank the lord you ran into me today—I'll get us out no problem." The thin girl stood up and tipped her hat a bit back.

"Who the hell is fretting—wait what are you about to do?" Killua had to ask when she reached into her pockets and took out a couple of cylindrical rods which coincidently happened to resembled dynamites. "Uh—what the hell are you doing?" He was seriously beginning to fret now when she began rubbing them against the wall to spark a fire.

"Trust me with this pale-boy. Better duck!" She masked her ears and kneeled unto the floor after aiming them at the wall. Killua didn't need to be told that as he automatically did the same. The smoke and dust didn't take long to evaporate and the kids noticed a small opening in the wall that shed light upon them. "Wah, not bad." She stroked her chin, observing it. "Looks like there are tree on the other side."

"Not bad, he says." The silverette murmured under his breath, albeit slightly grateful that they had found a way out. "Step aside." He ordered before positioning himself before the crack. The other only stared at him in question. Killua drew a fist and pulled himself back before slamming straight into the cracked opening. To his appeasement, the wall shattered further and they had finally created a way out of that boring darkness.

"Ooh, nice." The girl stood at her spot and clapped once at his strength even if she was a skilled fighter herself; she was still impressed at his composure. Killua merely hmph'ed before walking out the cave and into the forest ways. The last thing he wanted was friends. Gon would be the only one for him to fill that role.

'So he's just going to leave like that?' She unconditionally stepped out of the cave too and walked behind him. That moment she did, she also inevitably noted the height difference between them where Killua was barely an inch taller than her. After a few minutes of walking, Killua halt in his footsteps and passed a cold glance towards her.

"How long are you planning to follow me?" He finally mouthed.

"Why not? I mean I don't know what part of the forest this is and I'm pretty sure you don't either. So shouldn't we stick together at times like this?"

"Not interested. I can find my own way back."

"Hm…are you sure about that? Let's not forget if it wasn't for my help, you wouldn't even be out of the cave by now." She pointed out, stabbing the other on the spot.

"Che." The assassin muttered but then also noticed her small lithe figure. "What's a kid like you doing outside anyway?" He changed the subject. The statement successfully twitched a vein on her forehead.

"Gr, do I look like a kid to you? At least I don't have old man's white hair. And to be honest you're the one who looks more like a kid with your hair all over the place like that." She accused.

The silverette glared back. "You wanna die?"

"As if a spoiled brat like you could kill me?"

"That's it, I've had about enough now." Killua decided to play the adult and turned back around. "You should run home back to your mom already." With that he began walking away. The girl only stood there with a death glare and frustration riling up in her.

'Ughh…dumb bastard and I actually thought he was so cool for a minute.' She thought to herself through gritted teeth. She hoisted a pebble from the ground and threw it at the other's fluffy head.

"Hey…!" Killua rotated himself again to find her sticking out her tongue before jumping on top of a tree branch.

"I hope I never run into you again." Were the last words she said before disappearing. The assassin made a blatant face before closing his eyes to lock this memory somewhere deep in his brain.

"Forget it, I need to find Gon." He concluded.

****…****

"I'm telling you, Killua fell off the cliff in that cave—we have to go look for him!" Gon urged Kurapika and Leorio back at their hotel room.

"We understand, Gon but the three of us won't be of any help. We should at least inform the police." The blond suggested. Leorio nodded in agreement until he glanced at the figure walk in through the door. Kurapika noticed him too and stared at the silhouette— blinking once.

"What is it?" Gon raised a brow before turning around and recognizing Killua at the door, standing nonchalantly. "Killua!" Gon ran to him and threw his arms over his friend. "How did you make it out alive?!"

"What the—did you really think I was going to die from that?" The silverette exclaimed, disappointed at how much Gon underestimated him.

"Well at least that's resolved. Honestly you two, don't go sticking your noses in weird places." Leorio crossed him arms.

"But since both of you are back, can you do me a small favor?" Kurapika asked after a while. Gon and Killua faced the blond. "Actually I heard the persimmons here are very unique in their taste… You two wouldn't mind grabbing a few while I take care of some other stuff would you?"

"Totally do—" Killua began.

"Of course not!" Gon happily obliged, cutting the other off. The silverette only face-palmed at his willfulness. With that, the blond boy handed Gon a couple of coins and waved them farewell.

...Twenty minutes later…

"What kind of vacation is this if we're still doing chores?" Killua complained.

"Aw come on Killua, I think it's actually fun. We get to look around the shopping district they have and it looks really lively too." The brunette besides him said holding on to a bag of persimmons. "Hm, what's that?" The spiky haired kid pointed at a girl crouching below one of the stalls and replacing the fresh oranges stacked on top with horribly rotten ones while the shop owner had his back turned to other customers.

The girl had long aquamarine hair tied in a high ponytail as some came over her forehead and wore a sleeveless top with shorts underneath. Also not to mention the half fingered gloves she wore and a red fanny pack tied to the side of her hip. Killua watched her too but nothing clicked in him, maybe that physique…but the moment he realized it was a girl he pushed all thoughts away because he was certain he didn't know any girls outside the arena.

"Hey isn't that kinda mean?" When Gon whispered to the girl was when Killua discovered that the kid wasn't beside him anymore. 'When did he—that idiot.' Kiru sighed, having no choice but to step closer to them as well.

'Ah crap, busted.' The girl jolted once unaware of Gon's presence until he spoke up. She slowly creaked her head around to throw a plausible excuse and looked at Gon. However, before she could utter a word, Killua who was indifferently standing next to him caught her attention immediately (since hey let's be honest: the fella does stand out quite a bit). "Gah! You—!" She involuntarily pointed at the silverette who didn't seem to follow. At that moment the store owner was distracted by their commotion and swerved in their direction to notice a few oranges in the girl's hands and rotten ones on his shelf.

"Why you brats!" He shouted.

"Run!" The girl cried, being the first to dash from that place while the other two followed.

When they finally stopped a couple of meters away from the store and took a moment to catch their breath, Gon asked. "So you know Killua?"

"Of course I know him—well met him. It's really hard to forget such a rude mouth." She stood straight and crossed her arms against her chest.

"Hey I'd watch what you're saying if I were you. I don't even know you, girly." Killua declared.

"You …really are a messed up kid. Are you going to pretend to forget so soon?"

"What are you talking about? Geez, what am I some magnet to loud mouthed kids of all ages today?" Killua sighed.

"You are one hell of a jerk." The girl decided to leave it at that. Meanwhile Gon only stared back and forth at them.

"Um, why do I feel like a third wheel here?" Gon had to enter the conversation.

"And just what are you trying to imply?" His friend glared at him. "I told you we haven't met before."

"Che. Some brat who can't even admit I saved his life." She claimed. The silverette swung his head to her once again and waited a good minute before freaking out and pointing at her.

"Wait, that was you—you're a girl?!"

The girl only looked at him with her brows raised, right before laughing out loud. "Ew, what kind of reaction is that? How ignorant can you be? Don't tell me this entire time you thought I was a guy? We're living in the 21st century*, how can you still confuse a girl and a boy?" She found a square reason to mock him now.

Killua scowled at the taunt. "Well it's not entirely my fault either, you're the one who has such a curveless body—it's no surprise I couldn't tell. Plus, you were covering your hair."

The aquamarine haired girl unwillingly blushed at the remark. "Wow you two seem really close." Gon intervened again, feeling left out as usual.

"Are not!" Both Kiru and the girl screamed.

"Really…?" The enhancer had a difficult time believing that. "Hey I know! How'd you like to come back with us? We're staying at this really fancy resort, moreover you could meet our other two friends."

"Gon!" Killua gave a one-word warning. Gon only winked at him with a face reading 'it'll-be-fine.'

*not sure if they are in the 21st century but hey, we are ;)

To Be Continued…

So I'm not very used to having main characters paired up with OC's but this character was given tome so it didn't feel to different, anyhow I hope you're enjoying this super short story. Plz REVIEW and I'll work on chapter 2 in the meantime since I didn't feel like dumping 14 pages all at once.