Yaksha... [ he is certain he has heard that name somewhere. This would be the time kaneki would go to the library and read about daemons and spirits and yaksha but alas.

This means all he is left with is the thought he has heard of it before although he can't place it.

But kaneki quickly shakes his head about the boring part ]

I don't think it's boring. I never met anyone like you. [ he thinks that's interesting and also Rokurou isn't trying to murder ken and that's a good thing ]

In your world, apart from daemons and humans, there were no others? [ he finds it so strange that "ghouls" are not obviously part of the group ]

There are ghouls, in my world. They... Look human. [ they are not human ] They can be dangerous but some are just trying to live a normal life.