[He shakes his head.] What determines a man is not his age, but his actions! Moreover...

[A pause.]

No one said that you needed to use the same manner of address; if referring to yourself simply as 'Shingetsu' or 'Rei' or similar is more comfortable for you, then you should do that, right?

[The words come with a calm shrug--it seems like it makes sense to him at least.]