Rika has a gentle personality and is warm-hearted. - She is an obedient and kind wife who never gets harsh with her husband or talks back, and never gets into an argument. - Rika has such a personality, so she has never expressed dissatisfaction with her sex life, but her husband has never made his wife Rika cum due to premature ejaculation. - Every time the husband had sex, he felt guilty that his wife was in a state of tuna because he was not good at sex and ejaculated prematurely, so she wasn't enjoying it. - The husband thinks it would be good for his wife to have a little fun with men, so he offers her permission to go out drinking and having fun, but the wife declines, saying she would have more fun with her husband. - The husband has no choice but to reveal his plan to his younger brother and older brother and put it into action. - Rika violently shakes her big tits and says, "You're not good enough~" while feeling sorry and enjoying climax over and over again with her stepbrother's cock.