and sex officially entered Japanese cinema with Satoru Kobayashi's controversial and popular independent production Flesh Market (Nikutai no Ichiba, 1962), which is considered the first true pink film. Made for 8 million yen, Kobayashi's independent feature film took in over 100 million yen. Kobayashi remained active in directing pink films until the 1990s. Tamaki Katori, the star of the film, went on to become one of the leading early pink film stars, appearing in over 600, and earning the title "Pink Princess". In 1964, maverick kabuki, theater and film director Tetsuji Takechi directed Daydream, a big-budget film distributed by the major studio Shochiku. Takechi's Black Snow (1965), resulted in the director's arrest on charges of obscenity and a high-profile trial, which became a major battle between Japan's intellectuals and the establishment. Takechi won the lawsuit, and the publicity surrounding the trial helped bring about a boom in the production of pink films. In her introduction to the Weisser's Japanese Cinema Encyclopedia: The Sex Films, actress Naomi Tani calls this period in pink film production "The Age of Competition". Though Japan's major studios, such as Nikkatsu and Shochiku made occasional forays into erotica in the 1960s, such as director Seijun Suzuki's Gate of Flesh (1964)—the first mainstream Japanese film to contain nudity, the majority of erotic films were made by the independents. Independent studios such as Nihon Cinema and World Eiga made dozens of cheap, profitable "eroductions". Among the most influential independent studios producing pink films in this era were Shintōhō Eiga (the second studio to use this name), Million Film, Kantō, and Ōkura. Typically shown on a three-film program, these films were made by these companies to show at their own chain of specialty theaters. Another major pink film studio, Wakamatsu Studios, was formed by director Kōji Wakamatsu in 1965, after quitting Nikkatsu. Known as "The Pink Godfather", and called "the most important director to emerge in the pink film genre", Wakamatsu's independent productions are critically respected works usually concerned with sex and extreme violence mixed with political messages. His most controversial early films dealing with misogyny and sadism are The Embryo Hunts In Secret (1966), Violated Angels (1967), and Go, Go Second Time Virgin (1969). Three other important pink film directors of this time, Kan Mukai, Kin'ya Ogawa and Shin'ya Yamamoto are known as "The Heroes of the First Wave". In 1965, the same year as Wakamatsu became independent,