My Little Pony: A Blank Past

During his leisurely days, Jia Ri Youyou is a kind prince in the eyes of the people; to the nobles, he is the regent, second only to the emperor and above all others in court; and at Friendship School, he is the school's scheming head of discipline and homeroom teacher. No one knows how many faces he has, which one is the real him, or what happened in his past to make him this way.

(Note: The character introductions have nothing to do with the main story.)