After the film industry experienced a marked decline from the middle of 1960s, Shigeru OKADA, who became the second president of Toei in 1971, tried to attract audiences with yakuza films and oversaw the production of jitsuroku-ninkyo films and films with sexual or violent content targeting people who didn't watch TV.
1960年代半ばから映画の斜陽化が顕著になると、ヤクザ映画で観客動員を保つ一方で、1971年二代目社長に就任した岡田茂は、テレビに取り込まれない客層を狙い実録任侠ものやエログロものを量産。