The protagonist of Oushitsu Kyoushi Heine, the new royal tutor for the 4 Granzreich princes. Heine is an adult man with a childlike appearance, yet is very serious and doesn't show much emotion, except when being mistaken for a child. He has a multitude of talents, and is stern but kind towards his charges. Not much is known about his past, except that he apparently knew the king long before he came to the palace to take up his duties, used to tutor at a church (he still does), and was a violent man in the past.
