[Kaneki's taken off guard by the sudden shift back to the topic of ghouls. Then again, it's probably the most interesting thing to come out of his mouth since he and Marco started talking.]

Ah...no... You see, well, they've been in the news a lot lately and this guy who calls himself a ghoul expert is always on, talking about them. My friend's starting to get into the topic, and trying to figure out some of the investigations, but it's really a dangerous thing to get involved in.

[He's rambling now, and he realizes it. Cutting himself off there, he pauses, wondering how the heck he's managed to not be found out so far at home.]

So um...I just hear a lot about them.