Yasunao Tone is a Japanese artist who has worked with many different types of media throughout his career. He was born in Tokyo, Japan, and he graduated from Chiba Japanese National University in 1957, majoring in Japanese literature.
“ONAN is a work about desire (masturbation) which has no object but itself. The appearance of the large egg objectifies the man's desires. After colliding with the other (a girl), the hero falls down while still holding the egg, thus caricaturing the desire of the hero.” —Takahiko Iimura (takaiimura.com)