Sadao Hasegawa (1950 - November 20, 1999) was a prominent Japanese graphic artist specializing in male erotica. His work is notable for superb technical skills, elaborate fantastic settings (occasionally reminiscent of William Blake), and for incorporating Japanese, Indian, South-East Asian and African mythology. While focusing on depictions of muscular male physique, Hasegawa often turns to extreme sexual situations, bondage and SM themes, which, in the context of his stylized fantasy world, attain a nearly sacral intensity.