Any mentor who gives up on a young student they took in is a trash mentor. [ If you're going to mentor someone you're accepting responsibility for them. That isn't something you can just give up. Especially not when it involves a child. ] I can teach you how to identify signs that someone is trustworthy or not if you want to learn.

[ Cale doesn't have a special ability related to knowing if someone can be trusted or not, but he spent over thirty years as Kim Rok Soo learning how to read people in order to survive. If teaching children how to do the same saves them from what he had to go through then Cale will gladly teach them. ]

I have a cheat skill that makes languages easy for me, so I think knowing magic is much more impressive.