"Just let me explain first woman!" He shouted back at the girl as she furrowed her brows with a frown. Killua went on to explain before the match, he caught a glimpse of Hisoka's opponent, called Kastro on television. Doing so, he saw how confident he was and decided to see if he was being legit which then ended up with him explaining how he distracted the Heaven's Arena worker while on his floor to sneak up on the floor master.

[Name] listened carefully about his experience so far with Kastro, he explained once he came near his door, he turned on his Zetsu to conceal his presence. It was an extremely thought-out approach in his opinion, so when he came near his room, Killua did in fact see him sitting on the couch relaxing but then all of a sudden, his presence switched to standing right behind the boy.

"What, you're saying he teleported?" She uttered out loud making the boy jolt at her defensively. 

"No! All I'm saying is that I don't get how he was able to move that quickly..." He rolled his eyes avoiding her eye contact. His face then turned to the centre of the arena, continuing to rest his head on his palm. The girl finally calmed down and rested her posture on the seat she sat on.

He then went on to explain how he had a little talk when Kastro caught him spying on him. Killua never got to learn how the older adult did his trick, stating that maybe one day he'll have to go against him in a match. 

Momentarily, the announcer's mic turned on and boomed across the stadium filled with thousands of people. The second the attendee's voice was heard, everyone began to cheer in excitement, "The long-awaited rematch between Hisoka and Kastro!"

[Name] peered her head closer to the middle of the stadium, noticing the two adult bodies walking from opposite sides from each other. Her eyes noticed that Hisoka still wore his black cropped shirt and white pants with his hideous pointy shoes. But in front of him stood a fairly tall man, with long luscious white hair and a yellow cape. Needless to say, he was quite handsome in her eyes. 

Killua noticed the sudden change in [Name]'s atmosphere so he suddenly turned his head toward hers. From what he witnessed, her eyes were glistening and wide, while an unsure smile crept on her face. 

"D-don't tell me..." A voice lingered beside the [Hair colour] haired girl. She hummed leaning her ear and listening to what Killua wanted. The boy began to sweat drop as a small vein began to appear on the back of his head. 

Seconds had passed and Killua still watched her friend not even look at him when he tried speaking. He waited a couple of more seconds, watching the way her eyes were still glued on whatever was distracting her. He took a glance and noticed that her eyes were directly on the other adult who wasn't Hisoka. 

She was looking at Kastro. Instantly, his eyes shot back to her and his vein grew incredibly large. 

"Look at me when I'm talking to you!" He belted at the girl which finally led her to look back at him.

"Huh?"

Her face was dazed and she couldn't keep up with the sudden movement of Killua's hand making compact with the back of her head.

"Ouch!!" 

Throughout the rest of the day, the match between Hisoka and Kastro lasted till late noon, the sky had already darkened by the time everyone began to exit the stadium and the city lights had turned on. The two decided to go back up to Gon's room to tell him what the match was like but kept in mind not to tell him too much information due to his promise to Wing. They were finally up in the elevators after a long line of spectators awaited their turn. Killua pushed the button to their floor and eventually made it up to Gon's room which he willingly invited his friends in. 

What he wasn't expecting, was a sulking [Name], gnawing on one of the couch pillows as she and Gon sat on the cushioning together. Killua stood at the window admiring the city view. 

The image of a teary-faced girl with her teeth biting down harshly on a pillow made the both of them sweat drop.

"Damn... you... HISOKA!!" She yelled out loud in chunks because the pillow muffled her voice even more tears fell down her face as she wailed out as if she was the one who died. 

Killua sighed as Gon laughed at her behaviour, the green-haired boy had to find out from his other friend that Hisoka's opponent, Kastro, whom [Name] had a small thing for had spiritlessly died in merely seconds as everyone witnessed the clown-like man assassinate him with playing cards. All the spectators gasped watching Kastro's body die down from excessive wounds and bleeding resulting in his death. 

"Well, what'd you expect from a guy like Hisoka?" Killua huffed out loud closing his eyes. His eyebrows furrowed at the depressing girl's mood. 

"I-it's okay [Name], I'm sure he's in a better place...!" Gon immediately tried to comfort her, but to this, the [Hair colour] haired girl shot her menacingly darkened eyes. In a second her tears had magically disappeared and was now replaced with a face of terror. The green-haired boy jumped at how quickly her mood changed and how he couldn't react fast enough at the sudden image of [Name] launching her body onto his. 

"I'mgoingtofeedyouSPIDERS." The girl threatened all too quickly as she looked at the boy with wide eyes staring deep into his soul. Gon wailed at the aminous aura surrounding her figure making white go to his eyes. From the side, Killua noticed how close [Name] was to ripping anything or anyone into pieces, so quickly, he ran over to the two of them and began to rip her off the green-haired boy who was nearly about to leave the earth at any given moment. 

"Hey! Don't go taking it out all on Gon!" 

The two eventually managed to calm her down and rest on the sofa. Aside from all of her emotions, [Name] still had to understand that her life was not as simple as it used to be once she became a licensed hunter. Even so, it was still her second time ever witnessing someone die in front of nearly thousands of people. She had witnessed the scene of two very skilled Nen users, even coming across a Nen technique from Kastro before he died. But sadly, he still wasn't a match to the infamous Hisoka. 

The three eventually settled down and realized it was getting late. Seeing so, the three said their goodbyes with [Name] giving a proper apology to Gon before they departed ways. 

By the time that match took place, another month had gone by all too quickly. During this time, [Name] and Killua weren't often together anymore, not for any terrible reason, but this was the time when she began to focus on meditating and building up her Ten, just like Gon. She took herself as already physically trained enough after spending the first month mostly revolving around that discipline. 

And just like Wing promised 2 months ago, he had called the three of them back to his apartment where he continued to teach them about Nen. 

"Gon, Killua, and [Name]," Wing called out their names in the order they stood in. The three were now back in his room and the same interior was kept the same. "Starting today, you'll train with Zushi." 

From the sides, Zushi jumped on the spot before taking a glance at the [Hair colour] haired girl. To that, she secretly snickered to herself.

"Gon, I'm pleased that you've kept your promise." 

"It's all thanks to your promise thread," The green-haired kid assured him instantly, "A few times, I almost gave in, but when I looked at it, I was able to control myself." 

"That's because I added some Nen to help you."

The three kids raised their brows in shock, "Wow, really?" Gon was the first one to ask.

"No, I was lying," Wing smiled to himself as the four of them sweat dropped. 

Wing then went on to explain that if Gon ever broke his promise, he'd find out right away if he noticed the string on Gon's pinky ever snapped. This was because he infused his own aura into the thread that would break if Gon used any form of Nen. Afterwards, they began to follow up their knowledge with Nen. 

***

Hello, this is an Author's note, the following chapters will sadly be about the lessons of Gyo, Zetsu, and Nen which is quite frankly... boring (╥_╥)

As an Author, I really do not want to write about a whole teaching of a fictional power and would much rather go ahead with the story quickly

So I'd like to ask you, as the reader which one of the story path's you like the most

A being, continue with writing about the knowledge of Nen teaching

B being, briefly go over the Nen teachings and go along with the action and adventure 

C is, your very own suggestion that you can comment on this post!

Make sure to comment on which path you prefer, it helps me a lot!