Don't Leave Me [Killua X Reader]

You crept out of the elevator, a mischievous look crossing your features. Silently, you tiptoed through the hallway, hardly able to contain your excitement. This is the first time you've seen someone as young as you at this battle temple; a cloud of uncertainty passed through your mind. Perhaps this wasn't the best idea, you doubted this is how others made friends.

Pushing the thought away, you peered around a corner, searching for the familiar fluffy white hair. Unfortunately, you were met with emptiness and silence. Pursing your lips in determination, you continued sneaking through the hallway, senses on high alert.

"Oi," a voice echoed through the area. You spun around on the balls of your feet, locking eyes with your pursuer. "You're the one from the 200th floor." The blue-eyed boy remarked, glancing at you quizzically. Without a word, you simply gave him a nod, all confidence leaving your body at the thought of not noticing someone tailing you.

"What're you doing on this floor?" He asks, eyeing you distrustfully. You gawked at him as you racked your brain, searching for an answer. After a few instances, the boy let out an irritated sigh, rolling his eyes. "Don't bother, I'm not interested." He simply stated, briskly turning on his heel as he padded away.

'Nice going, [Y/N].' You thought sheepishly. 'I probably won't get another chance with him, I'll look for his friends instead.' An intent expression flickered on your features but quickly died down as you wondered if what you were doing was odd. With a shrug of your shoulders, you decided to go out for a bit; heading for the lobby.

Once at ground level, you were met with a bustling crowd and friendly banter resonating through the air. You exited through the front doors, chewing on your inner cheek. Pocketing your hands, you strolled through the city, observing the flood of citizens going about their day. You imagined yourself in their shoes, how it ought to be. The warmth of the spring sun was pleasant, not a cloud in sight. You eyed a certain cafe, a sudden feeling of thirst overcame you as your dry throat presented itself.

Sauntering over to the register, you ordered a cool, strawberry lemonade. You handed the worker a few coins and seated yourself at a table overlooking the outside world. You stared through the glass, not a thought in your head, leisurely sipping through a straw. Leaning on your elbows, head resting in the palms of your hand, you took in everyone's appearance, noting their composure and expression. You stayed like this for ten minutes before you saw a familiar head of green-black spiky hair. Shooting out of your seat, you thanked the employee and speed-walked through the doors, tailing the boy.

His head bobbed through the crowd, and you were quick on your feet as you followed, never letting the tinted spikes leave your sight. Eventually, the boy came to a stop, taking in his surroundings with a confused look on his face. Taking this as your chance, you crept closer to him from behind.

"Hi, you seem a bit lost; need help?" You cheerfully asked, flashing a closed-eye smile. Instantly reciprocating your enthusiasm, the boy admitted he was a bit lost. "I'm looking for a hotel room, I was supposed to meet someone there!" He exclaims, rubbing the back of his neck in embarrassment. You quickly told him you'd be glad to show him to a nearby hotel, and you both set off toward Heaven's Arena.

"I'm Gon, what's your name?" You peeped at him, a natural simper appearing at the sound of his simple demeanor. "[Y/N], it's nice to meet you!" At this, his cheeks raised as he sent a radiant smile your way. Together, you approached a modest hotel, and you quickly turned to leave. "Hold on!" Gon called out, halting your retreat. You looked over your shoulder, an inquiring expression creeping on your face.

"I want you to meet my friends!" Gon beams. "After all, it's not every day we meet someone our age!" You must've looked dumbfounded since he took hold of your hand and guided you to the door.

"Killua, Zushi; I want you to meet someone!" Looking toward the others in the room, an uneasy feeling takes over as you notice the boy from earlier shooting daggers at you with his eyes. Gon seemed to notice and sent a reassuring look your way, slightly calming your nerves. Opening your mouth and introducing yourself, a bright smile took the place of the fearful frown you felt inside.

"We watched your match earlier, you were amazing!" Zushi exclaimed, a puzzled look playing on his features. He seemed to remember something since he quickly ran out of the room. A moment later, he reappeared, this time accompanied by an absent-minded man with an untucked shirt. He noticed your presence at once, congratulating you on your win. Thanking him, you turn your attention back to Gon, who seemed to be in a heated argument with the white-haired boy, Killua.

"Gon," he starts, glowering in your direction. "Why did you bring her here?" For a moment, you felt a little offended; after all, you didn't do anything wrong. When the two of you first crossed paths on the 158th floor, it was at most a slightly unpleasant and bizarre interaction.

As you further examined him, Gon jumped to defend you. "Killua, even you admitted her strength and technique were applaudable!" He retorts, eyebrows creasing as he glared at his friend. His fists were balled up at his sides, and he was leaning forward. A tight, unhappy frown rested on his lips; he waited for a snap back.

"Idiot, you're so embarrassing! Obviously, I said that; you wouldn't shut up about wanting to get to the top to have matches like that!" Killua yelled, whipping his reddening face away. At this, Gon nodded, a triumphant expression flooding his features. "Oh, [Y/N]!" He snapped his fingers, remembering something. "Wing was going to teach us a new technique of some sort, that's why we came here in the first place."

Meeting Wing's eyes, he projects a knowing look. "Yes, in fact, I think [Y/N] should stay." At the sound of this, you feel slightly taken aback, but don't oppose.

You hear a groan behind you, already knowing who it came from. Ignoring it, you pay attention to Wing, listening intently as this lesson may be beneficial to you.

"Nen, or flame, is a power that fires our souls." He begins, writing out a few words on a whiteboard. "In other words, it's the strength of your will." You tilt your head at this, a look of confusion crossing your face. Wing once again raises his eyes, meeting yours. As if he were relaying a message, you instantly ditched the confused expression.

"And the four exercises make up a training regimen that strengthens your will." He goes on, not missing a beat. "Ten, to focus the mind on a single point. Zetsu, to put into words. Ren, intensify one's will. Hatsu, to release it into action." Technically, there was some truth to his words. You remembered hearing of this when you first started training. You glanced at the boys' expressions, noticing that Zushi wore the same look you bore a moment earlier.

"Killua?" You hear Wing's voice. "For this demonstration, I would like to "kill" you now. Is that alright?"

"Sure, why not. But you won't be able to." Killua replies without care. At this, Wing smiles, bringing up his finger as he says a few more words before taking on a stance. He goes through "Ten" and "Zetsu," looking up before unleashing his Ren. It was strong enough to throw you off guard, so you quickly activated your Ten. After increasing the concentration of Ren, Killua backs off, disappearing into the top corner of the room.

After Wing recommends they train their souls, Killua turns to leave. "Let's go, Gon." With a glance over his shoulder, Gon beckons to you, signalling for you to follow.

With Gon by your side, you hastily thank Wing. Together, you run after Killua, yelling for him to slow down. As soon as you reach him, you sense his vexed presence.

"He lied."