Daisuke's father remarried, so he had a beautiful stepmother, Yuri. He also loved this stepmother very much, and it seemed that his feelings for her had surpassed motherhood... Every time he sees his father being close to his mother, he gets angry inside, witnessing his father having sex and ejaculating inside his mother makes him feel lonely, worried that his mother will be robbed by his father and his future brother. Unable to take it anymore, he made a bold decision, which was to take his mother as his own! When his father went to work, Daisuke showed his affection for his mother. He constantly hugs and kisses, licks everywhere on his stepmother's body, then makes love and cums straight inside Yuri. Yuri resists at first, but she loves Daisuke herself, she gradually gives up and starts this wrong relationship with Daisuke. The two constantly make love to each other in the absence of their husbands. Some time later, Yuri became pregnant, but she herself didn't know if the child in her womb was her husband's or her husband's...