At a large nomikai that I attended with many of the other teachers and staff from Chiba Jyoshi high school. This is the kochyo-sensei, or principal. At parties like this, it is polite to show deference and gratitude to your sempai (superiors/bosses/mentors, etc) by pouring drinks for them. So I grabbed a carafe of sake and walked to kochyo-sensei's table to pour for him. It felt great to participate in that tradition, although I was shy at first.