Mizuki has felt that sex with her husband has been too bland for the past few years and is not satisfying. Her husband is only getting weaker and is not responding to Mizuki's sexual desires. Mizuki, who has too much body to handle, thinks that she wants it every time she sees her son's big, hard dick. One day, her son brings his girlfriend home. Mizuki feels Kokoro. The next day, she attacks her son while he is sleeping and starts sucking his dick. Mommy feels better, right?