Irksome is one word for it, but I can't say I'm surprised either. [There's certainly a shadow of irritation in his tone there, but he's at least gotten used to it more so than he was when he got here, and knows that some of the traditions aren't purely baseless stupidity.

While Shun doesn't seem to particularly care that she failed to introduce herself - nor care for the thanks, given the slight shrug that comes in answer to it - he does, after a moment of eying her hand, reach out to return the handshake. His grip is firm and confident, but there's a stiffness about his motion that says he's not used to these kinds of polite expressions.]

Kurosaki Shun, or Nekhbet when I have to be. I'm in the same pantheon as your god, for what little that means. [It's how he knows the guy at all, but Shun isn't the sort to hold pantheon relationships up as anything substantial. It's more a note of mild interest.]