Aha, awesome. I will tag! I have zero idea how this will go, but, at the very least you will have a too-serious or confused ninja who he can kind of play jokes off of. Souma's people aren't really funny-haha folks and he can probably count the number of times he has laughed on one hand.

I think their idea of a joke is like, someone using the wrong length of sword in battle? He has a lot of learning to do.