The Might Of A True Uchiha

*3rd Pov*

Frey arrives and looks at his surroundings in slight surprise.

'Lucy, I didn't think that the system had a transmigration feature. Why am I Killua?' Questioned Frey

{You arent Killua, you are his twin. You are now 2 years old, you are starting training today.} explained Lucy

'In these past 2 years, did anything major or minor happen? Something that can affect everyone if I suddenly acted like I am?' Questioned Frey

{Nothing. Everything should be normal and is normal, so you can act however you want. Anyways, today, you are doing torture training. You will be doing torture training for 2 years, for electricity, fire, etc. After that, you will begin techniques.

Anyways, let's get onto the topic of Nen. To summarise everything in a few sentences, your aura nodes are locked until the plot begins, you can make an infinite amount of Hatsu, you can use any power that you have previously gotten, be it Origin Dojutsu, Coordinated Titan, or your limited Quirks, but they need to be in the form of Hatsu's. As for Jutsu's, you would need to make a Chakra Hatsu, which can then be used for Jutsu's. Alright, I'm going to sleep for like 10 years, so no help from me. Bye.} said Lucy, as a panel appeared in front of Frey, displaying that the "System assistant is Offline".

'So I can use the system features, I just can't talk to Lucy. Good enough, now I can swear at her without her noticing me.' Thought Frey. He got up from his bed and looked around once again. Carefully observing, he did indeed find Killua. They had the exact same looks, voice, body shape, everything.

'My father and mother in this world will probably know us by our different Nen aura's, even though mine is closed. The main plot should start in about 10 years since the anime mentioned that Killua and Gon were nearly 12 years old. And I should go to the Heaven's Arena in 4 years. For now, I can only train as much as a Zoldyck can at the start of the anime, without any kind of Nen. But this will be so boring during my free time... Should I play with Milluki on his PC in my free time?' Questioned Frey to himself. He woke up Killua.

[What do you want, Frey?] he said while half-asleep.

'Same name, alright.'

[Ugh...] he said. They could both talk quite fluently, as their torture training started on that day, but they had already done various subjects pertaining to school, so already, at 2 years old, they could understand things 7-year-olds would talk about.

Frey dragged Killua out of his bed, put clothes onto him and himself, before dragging Killua to their father, Silvia Zoldyck.

[Good morning, father.] said Frey while bowing slightly.

[Morning...] said Killua while waving his hand. He collapsed immediately after.

[Are you two ready for your training today?] questioned Silva with crossed arms.

[Maybe.] said Frey

[Follow me.] he said, ignoring Frey's answer. The three, well two walked, while one was dragged into a dark room, a torture room. There were various types of things there, being wh.i.p.s, saws, clippers, scissors, and more.

[Alright, who wants to go first?] he questioned without any expression on his face. Frey lifted his hand.

[I'll get it done first. The earlier the better. But I have a request.] said Frey

[Let me leave the room when I am finished, so I don't hear Killua's screams.] finished Frey. Silvia thought that this was some kind of worry that Frey didn't want to hear, so Silvia answered with:

[No, this will count as your mental training.] he said. Frey was chained up, stripped to just shorts, and then whipped everywhere on his body.

[Great, now I have to somehow close my ears...] muttered out Frey, which was noticed by Silvia.

[Since you seem adapted to whipping, we will do electrocution.] said Silvia while placing the whip aside, and got a taser. He electrocuted Frey, who "screamed" in pain, waking up Killua.

He had pretended to scream in pain so that he can become an assassin at the same time as Killua so that he could be caught up in the plot. There are times when he just wants to be in the plot, and there are times when he wants his own adventure. Frey decided to split with Killua and Gon by the time the Yorknew ark happened, and go do something by himself. Granted, he will probably meet with them again after that, but it is still something to ponder over.

(A/N: Personally, the Yorknew ark is the ark that I dislike the most. Hate is an objective word, so I won't use it. He will skip Yorknew ark, and join back in the Greed Island. Might or might not skip the Chimera ant ark.)

Finally, Silvia let Frey go, while chaining up the terrified Killua, who was screaming in pain while being whipped. Meanwhile, their mother, Kikyo, joined in and started tasing Frey once again.

'I swear, my throat is going to dry up...' thought Frey. And so, begun their 2 years of torture, which they did to gain a resistance to the cold, heat, physical damage, poison, and other kinds of resistances. They were now learning to execute one of the most basic assassin techniques, Silent Gaits, a technique to not make sound through any kind of movement. With their talent, they had mastered the move in less than an hour. Then, they were taught Rhythm Echo. After 12 hours, they managed to master it. So, lastly, they were taught how to control their muscles and joints. With this finished in a measly 2 hours, they performed their first move with this, "Claws".

Even though they had managed to do it, they had only mastered Silent Gaits, and still needed practice for everything else. So, after 2 weeks, they had mastered it. After the course of another 2 years, they had mastered most, if not all of the Zoldyck techniques, and have upgraded their body regarding agility, dexterity, strength, etc. Even the advanced technique, "Snakes Awaken". Under the ability page of Killua, besides Nen, they had learned everything possible, in a measly 4 years. Now, they were sent on an assassination mission, as a pair, along with Illumi to see over their progress.

[A rich pig who doesn't know what the word "Offending" means.] explained Frey

[And you got this information from?] he questioned

[Frey hacked into a public computer. We only got his name from father.] explained Killua. Unlike the whole of Killua's ability page, Frey actually learned other skills that weren't shown in the anime, such as the "Lions Bite", a skill which is able to decapitate a person with extreme pain by making their neck bones slowly crack, while bleeding them out. Frey "learned hacking" from Milluki, but actually just got it from his JoJo-verse knowledge.

[Good job. Kill, what's your role in this?] questioned Illumi

(A/N: Kill = Informal way of saying "Killua". Illumi uses it now and then in the anime, so I'm using it too.)

[I got the bodyguard routines, found out when we can strike, and where.] explained Killua

[Alright, begin.] said Illumi. They both disappeared, heading to the target's house. It was night time, where the target was heading outside, into a car with 2 bodyguards. Frey quickly charged towards him and used his Lion's Bite to kill him. The person who hired the assassination requested him to die brutally, so Frey finished that request. The bodyguards brought out their guns and prepared to shoot at Frey, but they were both killed silently by Killua. The bleeding pig, who was dying of blood loss, and slow decapitation, was trying to scream but was unable to. Finally, he died, so Frey took his head, put it in a bag, and then headed back up to the roof, where Illumi was waiting.

[Good job for your assassination, but next time, take out the bodyguards first. Good job, Kill, for covering for Frey. For now, return to the mansion. Our butlers will fulfill the transaction. You both have earned a total of 25 million, split it evenly.] explained Illumi. He disappeared once again, without a trace, with Frey and Killua finally relaxing their muscles.

[My heart was beating so fast...] said Killua. Frey looked at him confused.

[No, I'm not talking about that. It's Illumi's aura... it's just so terrifying.] said Killua

[I guess.] said Frey. He disappeared, accompanied by Killua.

~~~~~~~~~~~~~~~~~~~~~~~~

Status:

Name: Frey Zoldyck

Age: 6

Nen: 100 (sealed)

Hatsu: 0 (sealed)

(A/N: The Nen value is the amount of Nen he will have when he unlocks Nen. He needs 100 Nen to do the water divination, which he has. However, even though it is displayed, it won't be, or rather cant be used or increased until the main plot starts. And even when it starts, he needs to actually open his aura nodes. So, it goes from impossible to open, to possible to open, but not opened.

And the extra-long chappy because firstly, sorry for the last chapter being short, secondly, sorry for this chapter and the future chapters being weird.

Alright, I still haven't edited the chapter numbers. I'll get to that.

bye.