Hunter X Hunter with Spoilers

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 Spoiler

3. I didn't say this well. I meant that Gotoh didn't want the pipe smoke guy to know of Alluka's powers and that's why he interrupted.

4. Well, yeah I don't know either. This "restriction level 5" means if he tries to leave the estate the butlers will bring him back so, I think. That must mean why it's so hard.

5. Yeah that is true, she said she would stick around from a distance. That would be gay if she made a wish taking them back or nullifying what Killua wants to do. And she probably will just because Gotoh mentions she is the only butler to not call Killua "Master" or something along those lines.

6. Idk. Since "give an order" was in quotes I think it's one of the "rules" to Alluka's powers that Killua said he didn't tell his parents. Meaning we don't know it either.