Heh... if they were to ask, who would I be to refuse?

[ He says, as if it wouldn't be a whole hassle to have to teach anybody else. The spells he taught Artoria were specifically tailored for her to use with their minimal pool of magical energy at the time. If he were to teach anyone else he'd have to do that all over again for them... though if Ai is any indication, he doubts either of her children would have a particularly large pool of magical energy to take from either. ]

Besides, I'd have to earn their trust somehow, right? If I ever meet them, that is.

[ As if he wouldn't be starting below-ground in that regard with them. ]