Yar! I return. Honestly, I think Tai Yang could teach an entire class on just Meditation*. Also, if you wanted him to be the history teacher, he would have to be the ancient history teacher, as he knows nothing about the past seven centuries compared to the people who are old enough to have been around for several of those centuries. Assistant Gym is fine, though.

*Already got the first three lessons planned. Perhaps he could demonstrate the first to Yui to show what he has to offer?