[Oh, sure, Ciel gets to sit on Sebastian and tear his clothes off right in the middle of the street, but as soon as Sebastian touches him it's "you can't do that in public~~". He sees how it is.
What he doesn't see is any wound. And that's even after he ignores Ciel's dangerous tone and simply continues his investigation until he's satisfied. Okay, giving Ciel back his head now.]
Neither of us is injured. [That's what on earth he's doing. Being concerned for you, you brat. Things would be a lot less puzzling right now if either of them had hit their head.]