[Okay, okay, that kick removes any shred of doubt. No one kicks him like his young master. Sebastian's grip on Ciel's wrist immediately loosens although he doesn't let go of him completely - as if he'd let him disappear goodness knows where - and he reaches out with his other hand to steady Ciel. Sorry, sorry, sorry, please don't trip.]
I apologise. [He carefully kneels in front of Ciel, gives his wrist a quick, gentle rub - no need to admit anything; he can imagine that hurt. This time he manages to look Ciel straight in the eye, all sincerely apologetic. Yes, all right, the unicorn can look on in confusion for half a minute and wonder why no one cares about it attacking. Let's have a Moment.]
I cannot see or hear [or sense] you. I do not know why. [At least not for certain. He holds out the hand he used to support Ciel, palm up. Palm writing, so convenient.]
Are you all right? [Besides the obvious. Can he take a moment to do away with the unicorn?]