She has a younger brother, Shingo, who is the complete opposite in appearance and personality from her husband, Shinpei, who has a gentle personality. - His job was unstable and he had no money, so he often came to Shinpei to borrow money. - One day, Lily, who was supposed to deliver money to Shingo's house instead of Shinpei, was taken to a dirty room and suddenly pushed down. - Lily, who was unable to move, was covered by Shingo, who had a good physique, and was raped from behind. - However, when Lily is penetrated from behind by a strong cock, she feels a pleasure that she has never experienced with her husband...