Tsukasa, who lived with her husband and father-in-law, was happy...until that day. - Tsukasa's careless behavior at home was too much for her father-in-law, who saw her as a ``woman.'' - Tsukasa's father-in-law, who has reached his limit, forcibly rapes her. - Before she knew it, Tsukasa felt secretly excited by the immorality of her husband and the unreality of being raped by her father-in-law...