Foster stares at Gongenzaka for a few seconds, eyebrows raised. His expression is almost excruciatingly neutral--it's benign enough to be inoffensive, but otherwise not terribly expressive. It's like he can't figure out what Gongenzaka's point is supposed to be.

"I'm done, if that's what you mean."

He waves again, this time demonstratively, as he begins to wade up towards shore. Wet and dark with it, his every bone is cast in sharper relief, and he looks positively moribund--

Though Gon has no way of knowing it, he's called the squirrel back already--it simply has yet to arrive. After the raising, he'd let it loose in the woods for a while to figure itself out (he really just wanted to get it out of the way), but he can tell it didn't get all that far.

"Are you ready?"

It's not a spurious question. Given Gon's blatant squeamishness about the whole thing--

Well.

He had better be prepared, because there's an incoming abomination in three...

Two....