Yuusuke, in the prime of his sexual desires, was spending his days jerking off like a monkey. He just wanted to fuck, anyone would do. His desire had swollen to the point where it clouded his reason, and he couldn't control it. Then, he saw his mother, Shihou, swaying her large breasts as she cleaned. Upon closer inspection, he thought, 'Mom's got a sexy body...' To Yuusuke, Shihou's physique seemed like a manifestation of every man's fantasy from an erotic manga. His desires began to spiral out of control.
