with a homosexual theme, Beautiful Mystery: Legend of the Big Penis (1983), for Nikkatsu's ENK Productions, which was founded in 1983 to focus on gay-themed pink films. Some of Nakamura's later pink films were directed in collaboration with Ryūichi Hiroki, and Hitoshi Ishikawa under the group pseudonym Go Ijuin. Banmei Takahashi directed "intricate, highly stylistic pinku eiga", including New World of Love (1994), the first Japanese theatrical film to display genitals. Another prominent cult director of this era, Kazuo "Gaira" Komizu, is known for his Herschell Gordon Lewis-influenced "splatter-eros" films, which bridge the genres of horror and erotica. 1990s Nikkatsu, Japan's largest producer of pink films during the 1970s and 1980s, filed for bankruptcy protection in 1993. Nevertheless, even in this most difficult period for the pink film, the genre never completely died out, and continued exploring new artistic realms. Indeed, at this time the pink film was viewed as one of the last refuges of the "auteur" in Japan. So long as the director provided the requisite number of sex scenes, he was free to explore his own thematic and artistic interests. Three of the most prominent pink film directors of the 1990s, Kazuhiro Sano, Toshiki Satō and Takahisa Zeze all made their directorial debuts in 1989. A fourth, Hisayasu Satō, debuted in 1985. Coming to prominence during one of the most precarious times for the pink film, these directors worked under the assumption that each film could be their last, and so largely ignored their audience to concentrate on intensely personal, experimental themes. These directors even broke one of the fundamental pink rules by cutting down in the sex scenes in pursuit of their own artistic concerns. Their films were considered "difficult"—dark, complex, and largely unpopular with the older pink audience. The title was applied to these directors, at first sarcastically, by disgruntled theater owners. On the other hand, Roland Domenig, in his essay on the pink film, says that their work offers "a refreshing contrast to the formulaic and stereotyped films that make up the larger part of pink eiga production, and are strongly influenced by the notion of the filmmaker as auteur." Pink film today The newest prominent group of seven pink film directors all began as assistant directors to the shitennō. Their films display individualistic styles and introspective character indicative of the insecurity of Japan's post-bubble generation. Known together as the they are Toshiya Ueno,