Tsukasa was happy living with her husband and father-in-law... until that day. Tsukasa's careless behavior at home was the limit of her father-in-law's patience, who saw her as a "woman." And when her father-in-law reached his limit, he raped her. Tsukasa felt a secret excitement at the immorality towards her husband and the unreality of being raped by her father-in-law.