In Hunter x Hunter, Killua had to leave Gon because he wasn’t able to defeat Shoot, and Bisky told Killua his weakness and one day he would leave Gon to die. Later on, Killua removed the thing Illumi implanted into him, which changed him.

But I still don’t understand why Bisky would ask Killua to leave Gon?


Killua was joking. By saying to Gon about Bisky's promise, the only thing he meant was at that moment as he felt that Aluka needs him more than Gon, 'cause his family was hunting for Aluka. So he wants to devote his time to protect Aluka.

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  • Do you think Killua is going to return in the future ? – jessica Aug 5 '19 at 17:14
  • @jessica I didn't read the manga to give you the right answer, but I think yes 'cause gon still need Killua. – mam8 Aug 6 '19 at 9:00

I think she said that in only one purpose : make him react

She certainly knew that this is too tough for Kirua to lose his best friend Gon.

So in this sense, she tells him that if he is not able to protect him, he will lose him, and will not recover. It is therefore better for him to separate from Gon.

This contributed to the development of Kirua's consciousness which was restrained by his brother.

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Killua left simply because he has obtained an important objective which is to protect his little brother/sister from his family that wants him/her locked away forever

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