Being raped in front of my husband - Adultery due to different social status

Late at night, Ryoko is about to be attacked by a man at home, but her husband rushes to her rescue and saves her life. The culprit ran away, and her husband is worried about his absence as he is due to go on a business trip overseas in a few days. It was her husband's driver, Tadokoro, whom the couple trusted, who learned of the situation and offered to guard her while she was away.