Y/N'S P.O.V

Arriving at the same place, We saw Knuckle standing while looking at us. 

"You kids seems serious tonight." He said. 'Nah I just copy their reaction to avoid ruining the tension.' I thought while mentally snickering.

 "Before we begin, I want to know where your partner is." Gon said with a serious expression "Eh? You mean Shoot?!" He replied.

 "Killua please, I'm not used to serious situations~" I whined while tugging his shirt. "Just bare with it, I'll buy (favorite/food) if this is over." He said while giving me head pats.

" Promise?!" I said with an excited expression.

He stare at me for a moment then look away with red face. 'huh? whats with him?'

 "Y-yeah. Now just focus okay!?" He then give me last head pat. "Haiiii~" I replied while skipping towards Gon and Knuckle.

'that was so c-cute....' Killua thought remembering her excited face.

___________

During the fight, Knuckle punches Gon back and forth in midair like a rag doll. "Gon!" Me and Killua yelled when we saw Gon got punch in the back.Knuckle tells Gon, however, that the Rock attack has currently two major weaknesses in it.

After Knuckle tells Gon that he has flaws in his attack, he asks for the name of the Nen ability.

"Neh Killua, I bet Gon forgets to name his attacks." I said while looking at Gon who's looks are troubled.

 "Ja-Janken!" Gon said while stuttering. 

"Wow, yeah zero effort." Killua said causing the two of us to snicker.

"Jajanken? I understand. You combined 'jajan' for 'ta-dah' with 'janken' for your attack, 'rock-paper-scissors'." Knuckle said making me fall from my ass from laughing so hard.

"Ah, no...The first "ja" was a stutter." Gon said with a sweat drop expression.

Knuckle explains the two weaknesses: it takes too long to charge and when Gon charges Nen to his fist, it lowers his defenses. These are things the enemy can take advantage of easily. 

After some talks and explaining, Gon attacks again

but before he could hit Knuckle Gon collapses, completely exhausted and Knuckle is perfectly fine.

I immediately run towards Gon and check his condition. 'I see he's just exhausted..'

Killua picks up Gon and carries him.

"Where are you going, fools?" Knuckle question us. "uhm.. hotel..? Besides I don't even know why I'm here there's just two tokens.." I muttered.

" We're going back. You can fight Gon again tomorrow. The outcome will probably be different. I'll defeat Shoot." Killua replied, then I hold his hand and teleported back to the room.

He gently put Gon on the bed. Bisky promises to massage Gon back to tip top shape, but is worried about Me and Killua hasn't fought this whole time.

She challenges Killua first then me to a fight then and there, changing into her overly muscular form.

________

The next day, Gon feels 100%, while Killua's face is still swollen from the brawl with Bisky, whilshe  also had some bruises.

"WHAT HAPPENED TO YOUR FACE, KILLUA?!" Gon yelled while looking at Killua's now swollen face.

"Huh? I was training with Bisky." He said while his voice slightly muffled.

"Training? Are you sure it wasn't lynching?" Gon question.

" K-Kil, are you-pftt you sure you're o-okay?" I ask while not looking at his face.

'dont look or you'll laugh.. d-dont..' I thought while covering my mouth.

"I can't believe Bisky won't punch you in the face, here I am..face swollen..." He said making me laugh.

" Aww~ don't be like that Kil~" I said while patting his head.

~TIME SKIP~

It's now night and they're now facing Knuckle and Shoot.

Gon will fight Knuckle while Killua will fight Shoot. I don't know why but, Bisky told me not to interrupt their individual battles.

Instead she only doubles my training as the boys were sleeping peacefully. She trains me with Hand-to-hand combats and helps me improve my Nen abilities.

'Maybe because she just want to have the boys some fair fight..? Yeah that must be it...' I just shrug it off, kinda happy since I don't need to Fight Knuckle and Shoot.

'for sure Killua and Gon don't need any help.' I thought while looking proudly at the boys whose getting ready to fight.

"Good luck Gon! Killua!" I yelled while waving at them.

"Wait that girl wont join our battle!?!" Knuckle ask while pointing at me.

" Ah, her? Yeah she won't. Bisky told us she will not help us on getting those tokens." Gon replied while waving back at me.

The final duel between Gon and Knuckle begins. As promised, Knuckle doesn't hold back and uses a special technique, forcing Gon to defeat him as fast as possible.

Then Knuckle starts explaining on What the APR can do. While Gon is...... Totally confused. Smokes coming out from his ears.

"OI! Knuckle bro, stop confusing Gon! We share the same brain cells! We can't take that information all at once!" I yelled as my head begans to pound just hearing many numbers.

"You fool! You should've told earlier!" Knuckle yelled.

" So ... many ... Numbers.. my.. head hurt..s.." Gon said making me laugh.

Meanwhile, Killua confronts Shoot, but gets himself in a pinch when his old habit to avoid stronger enemies is triggered.

KILLUA'S P.O.V

'Stay calm observe the situation with Gyo. He's not using In. There are three floating hands. That means... Most likely he's a Manipulator. ' I thought while observing Shoot's abilities.

I takes out my yo-yos and Shoot forwards his hands. i manage to knocks the hands away with the yo-yos, in a defensive stance and Shoot is impressed. He jumps towards my face in only a second.

'Jump back' my eyes widened when I suddenly hear Illumi's voice.

 But then I also remember what Bisky told me.

"When facing an enemy you believe to be stronger, you fight on the premise of escaping. If you can't manage to defeat Shoot then you have to leave Gon and Y/N's side!"

'No way I don't want to leave them.. I don't want to leave y/n... . Use electricity! '

Before I could I could use it, I notice my left eye has gone dark. As if a black hole were swirling around where it used to be. I barely able to dodge Shoot's attack, still able to sense his presence.

'My curse saved me, But that isn't good enough! I need to suppress my bad habits.!'

After another attack from Shoot, I realizes all I've been doing is running away the entire time. i quickly throws away my yo-yos, and charges at Shoot and... stops. 

______

Y/N'S P.O.V

I glance at Killua who's walking towards my way with a defeated look. I quickly stand up and run towards him, I was about to talk when suddenly he hugs me. 

"Kil, what happened?" I ask while hugging him back, My eyes widened at what I hear. I quickly broke the hug and what I saw broke my heart the most.

"Killua, Why are you crying?" 

I ask as he gritted his teeth tears streaming down his face.

"Kil, p-please tell me what's the problem... I-I can't- I don't want to see in these state..." I ask while cupping his cheeks.

"this is so frustrating .. I- I'm so weak y/n.... I can't do anything... I can't even s-surpass my own weakness, Illumi's words keeps on repeating on my mind... I-I can't- I'm afraid that if this continue I-I wont be able to protect Gon.... protect you.... What i-if you'll die because of m-me..? because I won't be able to h-help you.... Maybe Bisky is right I should jus leav-" 

I slap him.

"Killua! Stop thinking stuffs like that! We won't die, okay? Stop it! I hate it when I see you crying and broken... I can't... Please don't look down on your self.. I don't care if you can't even protect me... I already have a promise to myself, I will always make sure you guys are safe..." I said then hug him while patting his back. 

" Everyone has their own weaknesses Kil, you still have time to overcome it. You- no, We're still growing. We still have many hardships and trials coming towards our way, Don't give up, okay? We're here for you... I'm always here for you.... Killua."

KILLUA'S P.O.V

 After hearing those words, I hug her tightly and cry in her shoulder as she pats my back in comfort, afraid that if ever I let go I might lose her... 

" Now be strong, okay? Stop crying! We'll get these over together, okay!?" She said then lifts my face and kiss my forehead and then wipe my tears.

"Y-yeah, Arigatou Y/N..." I said while smiling at her. "Now there ya go! Stop crying you look like shit!" She said. "H-huh!? What did you just say?! shit?!" I yelled.

We just look at each other, and then broke into laughter. I stared at her, and said....

 " I love you...." 

'Sometimes I look at you and wonder how I got to be so lucky.'