 He was particularly known for bringing social issues to the "pink film", such as violence, racial prejudice and police corruption.Later in his career he brought the thriller genre into his "Roman Porno"s. Screenwriter Kazuhiko Hasegawa went on to direct the acclaimed "The Man who Stole the Sun" (1979).Lead actress Yuri Yamashina had been an actress in the "pink film" genre before the inception of Nikkatsu's "Roman Porno" series in 1971.