Boku wa Ousama is a show based on a book series by Teruo Teramura and Shizuko Wakayama. The first book came out in 1959 and 49 more volumes followed, making it one of the most popular children's book in Japan. The books and the anime follow the misadventures of Ou-sama, a silly, gluttonous, lazy b...

Source: MyAnimeList