-Shunga-

English Definition:
Japanese sex manuals, literally "spring pictures"

Among the earliest types of printed "Ukiyo-e," or wood block printing, shunga were 17th century sex manuals and courtesan critiques that depicted highly explicit love scenes. The couples are very rarely completely naked, though. Among the most well-known shunga authors are Hiskikawa Moronobu and Sugimura Jihei.

Note: "Shunga" relates to the craft, Ukiyo-e, Japanese wood block printing