リボンの騎士
The studio was headed by manga artist Osamu Tezuka. Tezuka started it as a rivalry with Toei Animation, his former employer, after Tezuka's contract with Toei expired in 1961. The studio pioneered TV animation in Japan, and was responsible for many successful anime television series, such as "Astro Boy", "Gokū no Daibōken", "Princess Knight", "Kimba the White Lion", "Dororo" and "Ashita no Joe", as well as more adult-oriented feature films such as "A Thousand and One Nights", "Cleopatra" (the first Japanese X-rated animated film) and "Belladonna of Sadness".