One day, Sakura, a mother who dotes on her son, finds out that her son Yuichi has a girlfriend and feels something she has never felt before. It is an emotion that a mother should not have towards her son... Eventually, wanting to guide her virgin son, Sakura decides to teach him about women with her own body. From that moment on, the father and son become inseparable from each other's bodies. A forbidden love story between a father and son who repeatedly have creampie sex begins...!