[Tenka opens his mouth to make a snooty comment about how maybe if you go into a high security prison in disguise and then bring back some sort of clue that could lead to the downfall of CERES then Sousei would probably be willing to teach.

Then he realizes that oh shit, this kid might do it.

He closes his mouth. Opens it again, realizes he still doesn't quite have words for this situation, and closes it again.]

It would make more sense to try to rob us than to sign up for the abuse that comes with knowing this guy. [He points to Sousei.]

Because let me tell you, this is definitely not teaching.