[As soon as the guy settles down in the throne, he gets swarmed by the others--Killua isn't surprised at all. Rather than joining the crowd, he hangs back a bit, listening in to the conversations as well as he can and tucking away any relevant information.

It's only after Souji gets a bit of a breather that he finally steps closer.]

So... it's Souji? I caught some of what you said to the others. [Killua studies him with wary eyes.] We were led here to summon the two of you--any idea what all of that's about?