Salt? [He sounds dubious as Greed elaborated, if only because of all things to be weak to, why salt? Then again, it really wasn't any more or less pathetic than the amount of monsters who found sunlight a hindrance. Himself one day included. It's not that he was complaining, though. Salt was easy to get a hold of and if it could really ward his brother off, even better.

Once Greed has finished showing off his control over fire, Killua doesn't need to ask now to know that this meant Greed was fire-proof. It left a sinking and dreadful feeling his gut; one of his greatest assets was likely going to be useless against Illumi in the future.] There's a lot of us around. I know at least two others.

[There's a pause as he suddenly comes to realize what the chances of his brother becoming something else--something he's never even seen before--were. He may be completely wrong with his current guess.]

Does salt water count? I mean, towards your weakness. [He slips the question in before he bothers to address the command to show-off, silently lifting his own hand. The skin there starts to head up, nails glowing hot as fire begins to form and swirl at his palm. In a sudden and intentional burst of energy it expands and engulfs his hand, from the second knuckle of his fingers down, in a sizable fireball.] This is all I can do.