[Oh. Well, that settles it then. Sebastian, against all assertion that demons don't get concussions or lose their memories, has a mild case of post-traumatic amnesia.
Ciel will just have to take charge. Again. Dismounts from his butler!pony and on the way up, starts tugging on the sleeve of Sebastian's coat. He's not normally so physical with Sebastian (or anyone really) but the image of Sebastian's desperate face is still clinging to his mind.]
Come. We'll solve this, you'll see. [He doubts anyone here will know demon anatomy but at least a quick physical check may reveal how to reverse Sebastian's memory lapse.]