...If you are able to use memory restoration yourself, I should be able to bring you back to yourself, or have someone else do so. If we spend one use of the ability and gain one, we lose nothing.

[And gain much, though Armin's not going to mention that at the moment.]

[Private, psychic protection ii]

...Would you like some company? [It's fine if he says no. Though to be honest, he's asking almost as much for himself as he is for Alcuin.]