We currently see Gon and Killua in Wing's room, learning about the four principles of Nen.

Wing: "Paying attention? Nen, or flame, is a power that fires our souls. In other words, it's the strength of your will." Wing said while drawing the Kanji for Nen.

Wing: "And the Four Exercises is a training regimen that strengthens your will." Wing explained.

Wing: "Ten: focus the mind on a single point, reflect on the self, and determine the goal. Zetsu: to put it into words. Ren is to intensify your will. Hatsu is to release it into action." Wing said.

Wing: "See, Zushi tempered his 'refusal to lose' during his battle with you, Killua." Wing said.

Wing: "Now allow me to demonstrate. Killua?" Wing said, making Killua turns his attention turn his attention toward him.

Wing: "For this demonstration, I would like to "kill" you now. Is that all right?" Wing asked.

Killua: "Sure. Why not. But you won't be able to." Killua responded with confidence.

Wing: "Let's do this in order. First, Ten." Wing said as he got into a stance.

Wing: "I focus my mind on a single point. Zetsu: Express your desired intent. Either mentally or verbally." Wing said.

Wing: "" Wing said as he started using Ren, Scaring Gon, and Killua.

-Cut to prison realm.-

After mastering the use of White, your moving on to using Black. This was actually easier to do because it required little energy to use. The only thing that was hard to do was aiming it.

So, you had Kalluto summon his confetti to help you practice. And ad you were practicing, You and Kalluto were talking.

Kalluto: "Hey, Big brother, where do you think we are right now? In the real world, I mean." Kalluto asked while shooting confetti in the air.

Y/n: "Well... That's actually a good question. Hopefully, we're with Gon and Killua and not in the Zoldyck estate." You responded while firing Black at another piece of confetti, Missing.

Then, you and Kalluto felt a wave of Ren being emitted from the outside world, putting You and Kalluto on high alert.

Y/n: "The hell?! Whoever has us is in danger!" You said shouted while shooting up.

Kalluto: "Yeah, And I prefer that whoever is carrying us die." Kalluto said.

-Cut to the outside world.-

As wing was using Ren, the prison realm suddenly leaps in the air and hits wing in the face, shocking everyone.

Wing: "Ow! What just hit me?!" Wing said while rubbing his face.

Gon and then notices that the Prison realm is no longer in his hands, and is on the ground.

Wing also notices the prison realm and wonders what it is. He also looks at Gon and assumes that he threw it at him.

Wing: "Did you throw that at me?" Wing asked Gon angrily.

Gon: "N-No I didn't! It just leaped out of my hands!" Gon responded nervously.

Wing then stares at Gon for a few seconds. He then sees that Gon isn't lying and that he actually didn't throw the prison realm at him. He then begins to calm down.

Wing: "I see, You're telling the truth. Im sorry for assuming you threw that cube at me." Wing said while bowing.

Gon: "I-Its fine..." Gon said while sheepishly scratching the back of his head.

Wing: "What is that thing anyway?" Wing asked.

Gon: "This is the Prison realm. And our friend Y/n is trapped in it." Gon said while picking it up.

Wing: "Trapped?" Wing asked, never hearing of something thats ables to do that.

Killua: "See, we were held hostage by some terrible people. And because of this, our friend wasn't able to fight back against them, so, Using that as an opportunity and get rid of Y/n, they beat him up and sealed him in that." Killua explained.

Wing: "Y/n? Who would that be?" Wing asked.

Gon: "He's our friend. He's also the person who's trapped in this, We want to become stronger to free him." Gon said.

Zushi: "He's also this really strong guy! At least thats what Gon and Killua said." Zushi said.

Wing: "Wait. Killua, you did say that Y/n could use nen right? Do you know what his abilities are?" Wing asked, wanting to know more about you.

Killua: "I know some of them, But not all of them. But I'll explain the ones I know." Killua said.

Killua: "There's "Red", which allows him to repel an enemy with a lot of force." Killua explaining.

Wing: 'Repel? He must be an Emitter.' Wing thought to himself.

Killua: "There's Hollow purple, which is a blast that, according to Y/n, obliterates everything in its path." Killua said.

This surprises Wing and Zushi. Hollow purple obliterates everything in its path? An ability like that must be extremely powerful.

Killua: "There's Limitless, Which is an impenetrable barrier, stopping any physical attack in its tracks." Killua said, shocking them even more.

Killua: "And that's all the ones that I know." Killua finished.

Wing: "Okay... Well. I wasn't this guy to have an impenetrable barrier and an attack that obliterates anything..." Wing said.

Wing: "Anyway, If you wanna master nen, set your sights on mastering Ten first. If you master Ten, you no longer feel the pressure of an opponent's will." Wing said.

Killua: "Alright then. Let's go, Gon." Killua said as he left the room.

Gon: "Thank you very much! Wait up Killua!" Gon said as he followed Killua.

Wing: "Zushi."

Zushi: "Yes sir?"

Wing: "Let's begin training." Wing said.

Zushi: "Oh... Osu!" Zushi responded.

Wing: "First off..." Wing said as he erased the board.

-Cut to Gon and Killua.-

Gon: "He lied?" Gon asked confused.

Killua: "Yeah. What he said was true, far as it went and his power is the real deal, too. There are a few things it doesn't cover." Killua said.

Gon: "Like?" Gon asked, wanting an explanation.

Killua: "Like how tough Zushi is. In our fight, he got up every time I knocked him down. That was pretty annoying. Which is why I got a little pushy with him at the end." Killua explained.

-Flashback.-

We currently see Killua and Zushi in the ring. With Zushi a little beaten up and tired, And Killua being unscathed.

Killua: "Why you-!" Killua said angrily as he dashed toward Zushi punched him in the gut a bit too hard.

Killia: 'Oops!' Killua thought to himself after punching Zushi too hard.

As Zushi gets sent flying into the wall. But then, Killua sees him get up.

Commentator: "He's gotten back up, folks! Zushi must be invincible!" The commentator said as Zushi was standing.

Killua: 'No way...' Killua thought to himself.

Commentator: "But the referee has awarded a critical hit and knockdown. Killua wins by TKO, with 11 total points." The commentator said as the crowd cheered.

-flashback over.-

Killua: "It wasn't his strength of will alone that kept him standing that whole time. There's gotta be something else he's hiding." Killua said, being skeptical about wing.

-Cut to wing.-

Wing: "What's the matter, Zushi? Your Ten is aggravated." Wing asked.

Zushi: "Master... Why did you lie to Gon and Killua just now?" Zushi asked.

Wing: "Lie? Are you referring to my explanation?" Wing asked.

Zushi: "Yes! The Four Exercises are Ten, Zetsu, Ren, and Hatsu. But they don't mean what you told them. Did you decide to lie to them because they aren't your students?" Zushi asked.

Wing: "I didn't lie. That 'Nen' is an important discipline in training the mind..." Wing said as he erased something on the board and started writing something else.

Wing: "...for this Nen." Wing said as he wrote the true meaning of Nen on the board.

Wing: "However, it's true that I cannot teach Nen to someone who is not a student. So I used the other Nen as a hint, just to help them along." Wing said as he sat down.

Wing: "If the Nen I teach is used in the wrong way, it can become a terrible weapon, Zushi." Wing said.

Wing: "For example..." He said as he tore a page out of a book he was holding.

Wing then usings Nen on the torn-out page, make it turn incredibly sharp. He then threw it at the drinks on the table in front of him, making it cleanly slice straight through them and stick to the wall behind them.

Wing: "You could turn a simple piece of paper into quite the harmful blade. Furthermore, you could harden your body as a defensive measure." Wing said as the piece of paper turned back to normal.

Wing: "With enough work, anyone can use Nen. Which is why you must be very careful when choosing who to teach it to." Wing said, not trusting Killua or Gon with Nen.

Zushi: "Master... It's just... that I hadn't gotten the chance to read that book yet." Zushi said, making Wing surprised.

Zushi: "And that juice... it was mine..." Zushi said while looking down.

Wing: "Im sorry!" Wing said, having had to scramble around for a way to apologize.

-Timeskip 1 day.-

Commentator: "It's time for the biggest match of the day! Two rookies have advanced to the 190th floor without losing a single fight! Gon and Killua! Will they be able to clear today's match in one shot, too?" The commentator asked.

Commentator: "Okay, everyone! Get ready to press your wager buttons!" The commentator said while Zushi was watching.

Opponent: "Unfortunately for you, that little push move of yours won't work on me. Thats because... I'm as slippery as a snake, and my fangs are just as sharp." He said while making Snake-like motions.

Opponent: "Fangs that are just dying for a taste of your vital points." He said.

-Cut to Killua.-

Wrestler: "You might sport a vicious chop, kid, but it won't be enough to save you from these muscles! And do you wanna know why?" The wrestler asked while flexing.

Wrestler: "Because I'm totally ripped, obviously!" The wrestler said cockily.

Killua: 'Geez. I bet Y/n would be rolling on the floor if he were here.' Killua said while sighing.

-Cut to Gon.-

Referee: "And begin!"

Gon's opponent then charges at Gon. But Gon just pushes him away easily.

And coincidentally, Killua knocked out his opponent at the exact same time.

Referee: "That's a critical hit and knockdown! That's three points! It's a knockout! And, winner is Gon!" The referee said.

-Cut to Killua.-

Referee: "Critical hit and knockdown! That's three points! Knockout! Killua wins!" The referee said as the crowd cheered.

Commentator: "Once again, Gon and Killua have knocked out their opponents with one attack, meaning both of them have successfully cleared the 190th floor! Both competitors advance to the 200th floor!" The commentator said.

Zushi: "The 200th floor already?!" Zushi said surprised.

Wing: "Zushi." Wing said, appearing out of nowhere.

Wing: "Killua and Gon have already reached the 200th, have they?" Wing asked.

Zushi: "Yes! They're both amazing fighters! I really need to train m-" Zushi said, but before he could finish, Wing vanished.

Wing: 'I guess I dont have a choice.' Wing thought to himself.

-Cut to Gon and Killua.-

Staffer: "Enjoy." The staffer said while Gon and Killua were in the elevator.

Gon: "The 200th floor! So, what's it like?" Gon asked while they headed up to the 200th floor.

Killua: "Beats me. Never actually been there. But I guess we're gonna find out." Killua responded.

Then, they arrived on the 200th floor.

Gon: "Wow! The 200th-floor sire is fancy, huh?" Gon said, admiring the 200th floor.

Killua: "Where's the reception?" Killa asked.

Killua: "Maybe this way?" Killua said while walking to the right.

Gon: "We finally made it!" Gon said happily.

Killua: "Yeah." Killua said in agreeance.

Then, they arrive in a hallway. But as they were about to enter, They feel Ren being sent their way.

Gon: 'What is this? It suddenly feels like we're in a jungle swarming with monsters!' Gon thought to himself nervously.

Gon: 'But it looks like an ordinary hallway.' Gon thought to himself.

Killua: "Let's go. We can do this!" Killua said as they entered the hallway.

As they were walking, they stop after a few meters. Being frozen in fear.

Gon: 'It's not working! I can't go on! I don't want to!' Gon thought to himself.

Gon: "Do you feel that bloodlust? It's directed right at us!" Gon asked.

Killua: "Okay, that's enough! Who's there?! Show yourself!" Killua shouted as a tired-looking staffer came out.

Staffer: "You must be Killua and Gon. The reception desk is this way, so please register for a 200th match today. Be advised that your eligibility for this floor expires at midnight, so please don't delay." The staffer says casually.

Gon: "Did that feeling come from her?" Gon asked.

Killua: "I can't tell." Killua responded.

Staffer: "By the way, on the 200th floor, there are currently 173 contestants. And from this floor up, all weapons are allowed in all matches. So, please feel free to use whatever you have. Also, as of the 200th floor, you win no longer receive prize money. Now you will be fighting only for honor. Please keep that in mind, if you participate." The staffer explained.

Then suddenly, a card appears out of nowhere and lands right in front of Killua and Gon.

Then they look behind the staffer, only to see Hisoka with his back to the staffers.

Killua: "Hi-Hisoka... But what are you doing here?" Killua asked.

Pedo Magician: "It isn't strange, is it? I love to fight and this is a temple devoted to the craft." Pedo Magician responded.

Hisoka: "The real question is, why are you here? Just kidding... This meeting is no mere coincidence. I've been waiting for you." Hisoka says. Then, he notices that you aren't there, which confuses him a bit.

Hisoka: "Wait a second, Where is Y/n? I was looking forward to fighting him the most." Hisoka asked, slightly disappointed.

Gon: "Well... You see... He's been sealed in this here." Gon said while showing on the prison realm.

Killua: "And we've been looking for a way to free him for a while now. Haven't found it yet. I'm starting to think he'll actually be there forever." Killua said, making Hisoka shocked and incredibly disappointed.

Hisoka: