 Over the years, he also created a number of volumes of animal, insect, and nature studies and "shunga", or erotica.Shunga prints were quite acceptable in Japanese culture, not associated with a negative concept of pornography as found in western cultures, but considered rather as a natural aspect of human behavior and circulated among all levels of Japanese society.Tsutaya Jūzaburō died in 1797, and Utamaro thereafter lived in Kyūemon-chō, then Bakuro-chō, and finally near the Benkei Bridge.