In order to save up for a down payment on a house, Erika, a wife, moves in with her husband Keiichi's father, Toshio. Keiichi was worried that his father, who has always had a penchant for women and loves the sex industry, would make a move on Erika, and his premonition turned out to be correct. Toshio, who was turned on by Erika's glamorous body, forcefully pushes her down and rapes her. She can never bring herself to say, "I was raped by your father"... Erika's feelings of guilt towards her husband grow in Kokoro...