"No salutations needed. My exalted status shall not be disclosed as we travel among the common folk. I acknowledge that you are a person of superior ability. Henceforth, you will be my guard. Worry not. Should any danger arise, I shall dispose of it."

"I declare you my chamberlain. In other words, according to my judgement, you are useful to the Shogunate and loyal to me."

(As Ei) "Dear me, that didn't frighten you, did it? After all, you are in the presence of the most supreme and terrifying incarnation of lightning in the whole of Teyvat."