Admittedly, that would be interesting... Ninja are just part of history, in my world.

[And no doubt it's very different. What he's seen Sai do certainly doesn't resemble what he knows of shinobi, which he supposes makes enough sense when they're from entirely different worlds. Ghouls seem quite different in other versions of Earth and beyond, too]

But more than that, it's got a connection with someone I know, right?

[Now that's particularly interesting]