The Royal Tutor Season 1 Episode 10 The Professor I Don't Know ( Air Date 2017-06-07 ) Genre Animation, Comedy, Sci-Fi & Fantasy, Drama category. Overview "Little by little, the problem princes have been facing their flaws and learning more about themselves as Professor Heine grooms them for the throne. But when Count Rosenberg makes another appearance, they realize there's one thing they still know nothing about: the royal tutor himself...".