Destiny (Killua x Reader)

A ✕ Sudden ✕ Farewell

Your P.O.V
It's almost been a year since I started my training with Killua.

I ran and ran and ran everyday, and I acquired this sense of determination, this sense of spirit that I would never give up, no matter what else happened.

Instead of fighting the burning pain in my legs, I would welcome it and use it to make me strong.

I was invincible.

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"I'm surprised at how much you've improved in merely one year."
Killua commended as he flashed you a smile.

"All thanks to you."
You replied with a grin plastered across your face.

"Nah, you earned it with your own hard work. All I did was support you. You've really become strong, (y/n)..."

You smiled at him as he looked down, murmuring something else to himself.
"If she's strong enough to protect herself now, does that mean she doesn't need me anymore?"

You were bewildered by the sad expression on his face. "Is he not happy that I've become stronger...?"

"Killua, I want to thank you for training me. Is there anything I can do for you?"

He flinched, surprised at your sudden suggestion.
"W-Why suddenly-"

He was cut off before he could finish talking.

"I want to do something for you too!"
You exclaimed.

Your words brought a smile to his face.
"Geez, you really are an idiot. I told you that I'm helping you because I want to, right? I don't need you to requite me..."

He then muttered something under his breath.
"If there's something you can do for me, then I want you be with me forever..."

"Hmm? Killua? Did you say something else?"

He blushed and turned his head away from you.
"N-Nothing."

You stared at him bemusedly.
"I own you my life, y'know? You did so much for me. So I'd do anything for you..."

His face turned bright red as the words rolled off your tongue.
"I-Idiot! Don't say you'll do 'anything' so easily!"

You tilted your head, not understanding why he was so flustered.
"Ahhh geez, how can she say these things without getting embarrassed!?"

Killua thought to himself for a moment.
"Anything, huh? If I could get her to anything for me, what would I want?"

He stole a quick glance of you, his face reddening once again.
"Would it be creepy if I told her that I want her to always be my side?"

You walked closer towards him and leaned forward.
"Killua, what's wrong?"

Desperately hiding the blush on his face, Killua suggested to call it a day.
"L-Let's go to sleep! It's late already, s-see?"

Being the dense girl you were, you could not fathom the reason behind Killua's weird reactions.

As usual, the two of you went to sleep separately, but Killua couldn't stop thinking about you.

"What's wrong with me... why is she always on my mind? Ugh, I can't fall asleep..."

That was when his cellphone started ringing.

Killua quickly picked it up, afraid to wake you up.
"Wha- bro...ther?!"

He had received a call from Illumi.
"Brother... what do you want at this late hour?"

There was a moment of silence.

"I am giving you a warning, Kil, you will betray her. If not, she will betray you. If you continue to stay with her, you'll kill her one day. That is your true nature. After all, you're just heartless killer; a dark doll without mildness. The only time you feel pleasure is when you kill others. You don't have the right to have friends, and even if you start to develop a crush on that girl, your feelings will never be reciprocated. Assassins don't feel affection for anyone, nor do they need friends. You're only a puppet who has nothing but bloodlust. You cannot break free from your training as an assassin and you can never violate me. Come back to us, Kil. You were born to be a maniac killer."

"You... will... kill... her..."

Illumi's words echoed in Killua's mind.

Trained not to sympathise, fostering his inability to experience other emotions, his instinct as an assassin was once again elicited.

Severely disoriented by his brother, Killua tried to regain his posture.
"I don't want to hurt her... I don't..."

Tears begun to form around his eyes.
"I can't stay with her anymore. I must go. Before I hurt her... if I ever hurt her, I will never be able to forgive myself."

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That day, you woke up to a shocking sight.
"Killua...? Where are you-"

He faced you with a tearful smile.
"(y/n), you have enough strength to protect yourself now. You don't need me anymore... I'll be going back to Kukuroo Mountain, don't follow me."

Your eyes widened in astonishment and as you tried to stop him, tears started rolling down your cheeks.

He bit his lip and turned his back to you.
"Farewell, (y/n)"

You inched in, stretching out a hand towards him, but your legs wouldn't move.
"Move, legs, move!"

You mentally scolded yourself as you tried to call out to him, but no words came out.

And then, in the split of a second, he disappeared before your eyes.