At the peak of its popularity in the 1980s, the innocuously named "Shashin Jidai" ("Photo Age") sold 350,000 copies a month. Edited by the self-made publishing impresario Akira Suei, the magazine featured cutting-edge photography by the likes of Nobuyoshi Araki and Daido Moriyama and in-depth articles about underground culture, but most of its readers were just there for one thing: porn.