After you and Kalluto were sealed, the prison realm just sits there on the ground. As if nothing happened.

Zeno: "Welp. There he goes." Zeno said as he let Gon go, not seeing a reason to hold him, hostage, any longer.

Kikyo: "Worked like a charm." Kikyo said smugly as she let Kurapika and Leorio go.

Zeno: "Let's leave. You guys can keep the prison realm. It's not like Y/n can get out of it anyway." Zeno said as he prepared to leave.

But as he was about to leave, Gon grabs his wrist.

Gon: "Hey, Old man, Let Y/n out." Gon asks while having an emotionless expression on his face.

Zeno: "No. Even if I could, I dont plan to." Zeno said casually as he tried to move, but couldn't. As gon was holding him in place.

Gon: "I'll ask you one more time, Let Y/n out." Gon said as he unconsciously used Nen to break Zeno's wrist.

However, Zeno doesn't flinch in the slightest. And just punches Gon away.

Leorio, Kurapika, and Killua just fall to the ground, really letting in what just happened sink in.

They were completely useless. Because they were too weak to do anything, you were imprisoned, with little hope of ever escaping.

Leorio: "D-Damn it! We couldn't do a thing! We were completely helpless!" Leorio said while tearing up, completely livid that he couldn't do anything.

Kurapika: "And because of that... Y/n is gone..." Kurapika said with his head down. Ashamed that he was taken hostage hilariously easily.

Killua then looks toward his family with a pissed-off expression and makes a promise to them.

Killua: "From this day forward, I vow to slaughter every last one of you. People like you can't be allowed to exist." Killua said, swearing to slaughter every last Zoldyck. With very few exceptions.

Silva and Zeno, thinking that he was just angry, dont take him all that seriously and just leave. Leaving your friends to sit there and think.

Leorio: "What now? They said that the cube Y/n is stuck in is inescapable... How are we gonna get him out?" Leorio asked, breaking the suffocating silence in the room.

Killua: "Okay... Let's just all calm down, and think." Killua said as everyone began to breathe in and out, cooling down their anger.

Kurapika: "Okay, I think I have a plan." Kurapika said, getting everyone's attention.

Kurapika: "Gon, Killua, You two will hold on to the prison realm, And we'll go our separate ways. And while we're split up we'll try our hardest to get Y/n out of there, while also working to achieve our goals. Sound good?" Kurapika asked, then everyone nodded.

Kurapika: "Alright, we'll split up once we exit the Mountain." Kurapika said as he began to leave toward the testing gate, prompting the others to follow behind.

-Cut to Prisoner realm.-

You were in tears when you saw your father. Millions of questions were going your head. How was he alive? Wasn't he dead? Didn't you directly witness his death? But as you were scrambling around, trying to comprehend what was happening, He begins to speak.

Satoru: "Um. Hey... God this is awkward." Satoru said, mumbling the last part.

Y/n: "You shouted at him, making him jump back defensively a bit.

Satoru: "Okay, Just calm down, And I'll explain everything, okay?" Satoru said to you, trying to calm you down.

You then started to take a few breaths, It was surprising at first but you had to calm down and listen. And after a minute or so, you finally calm down.

Y/n: "Okay, How are you alive?" You asked, more calmy this time.

Satoru: "Better. Now, sit down a listen." Satoru said before explaining everything.

-Flashback.-

We currently see A bloody and beaten Satoru fighting Sukuna, who was only a bit bruised. All you could see for miles was fire and destruction. Not a sign of life in sight.

Satoru: "Damn it. There's no way Im gonna survive this." Satoru said while vomiting out blood and falling to one knee.

Sukuna then begins to walk toward Satoru with a grin on his face. Expecting to die, he says what he assumed would be his final words.

Satoru: "At least Y/n got away..." Satoru thought as he looked down, expecting Sukuna to finish the job.

But, he didn't. Instead, Sukuna began to speak.

Sukuna: "Y'know, Ever since I got out of being sealed, I've been in a happy mood. So, Instead of killing you, I'll just do this." Sukuna said as he pulled out the Prison realm.

Satoru: "So... Gonna seal me instead huh?" Satoru asked while sighing in annoyance.

Sukuna: "Correct. I want to be the one doing the sealing this time. And besides, I couldn't escape from it. So you obviously can't either." Sukuna said while grinning, unknowingly pulling the dumbest move he'll ever make.

Sukuna: "Any last words?" Sukuna said as he tossed the prison realm in the air a few times, playing with it like it was some kind of toy.

Satoru: "Your gonna regret this. You have how much you just screwed yourself over Sukuna." Satoru said ominously. But of course, Sukuna doesn't take him seriously.

Sukuna: "Yeah, Sure I am. Won't say that once you're sealed." Sukuna said as he activated the Prison realm and sealed Satoru.

-Flashback over.-

Y/n: "Are you serious? But I saw you get stabbed with the inverted spear, Speaking of..." You said as you pulled out the inverted spear.

Satoru: "You have it?! Where'd you get this??!" Satoru shouted in surprise.

Y/n: "I found it when I was taking the hunter exam. During the second phase when I had to cook a boar I think." You answered.

Satoru: "Wow... it's a good thing you have it and not anyone else. Make sure you dont lose it." Satoru said, before his attention turn toward Kalluto.

Kalluto had just been watching your interact with Satoru dumbly. He could tell that this was an important father-son moment. So he didn't want to intervene.

Satoru: "Who's she?" Satoru asked, mistaking Kalluto for a girl, making him a bit agitated.

Y/n: "Hate to break it to you... But he's a guy..." You said while sweatdropping and making Satoru drop to the ground.

Satoru: "I apologize!" Satoru said while bowing at a 90-degree angle.

Kalluto: "It's fine. Just dont do it again. My name is Kalluto by the way." Kalluto said while hiding his face behind his fan.

Satoru: "How're you here anyway? Wait... You didn't fight Sukuna did you?!" Satoru said while rushing toward you and putting his hands on your shoulders, making you flinch in pain.

Satoru: "Shit. Sorry, lemme heal you." Satoru said as he used a technique he created to heal you.

You felt amazing. Your broken bones were healed completely. You also stopped feeling any sort of pain. You even felt a bit stronger!

Y/n: "Wow! How'd you do that?" You asked with starry eyes, amazed that he could heal so well.

Satoru: "Since time doesn't move here, nor do I lose the use of any my powers, I figured that I'd create some new abilities. The healing move I just used is named "White" I also have a few others that I've created." Satoru explained.

White was an ability that was used to heal yourself and other people. The more you use and practice with it, the stronger it gets. Satoru created this to have a way to recover while fighting, Without having to rely on someone else to do it.

Y/n: "Really? Is there a way I could learn that?" You asked excitedly, really wanting to learn this.

Satoru: "We have nothing better to do, so sure. But let me explain the other abilities first." Satoru said.

You were really excited to learn some new abilities, As spamming Red and blue all the time got old very quickly. But you wanted to know about his other abilities that he created, so you listened.

Satoru: "Another ability I've created is called "Black". This doesn't do any real damage, but it does inflict the opponent with a kind of "Poison". This ability slowly but surely takes the opponent's senses away, Like sight or smell. It also causes constant pain in the opponent's chest. After around 15 minutes or so, The opponent will lose all of their senses completely." Satoru explained, making you shiver a bit.

As Satoru explained, Black isn't meant to be a destructive move like Red or Blue. It was meant to weaken the opponent over time. And because it wasn't any actual physical poison, Having immunity to it was impossible.

Satoru: "The last ability is called Solid Grey. Like Hollow purple, It's a combination of White and Black. It essentially deals unhealable damage to your opponent if it hits. No medical technology, Ability, or anything out there can heal the Damage that Solid Grey does." Satoru says with confidence.

Solid grey is an ability that Inflicts the opponent completely and utterly unhealable damage. You could have the greatest healing factor on the planet and you still couldn't heal the damage that Solid grey does.

Y/n: "Well, what are we waiting for? Let's start!" You shouted excitedly, wanting to quickly learn these abilities and brag to your friends.

Satoru: 'You better watch out Sukuna. Because once we get out of here, you're gonna experience hell on earth.