The popular series "Creampie Incest" depicts the lust of a beautiful mature wife who gives herself over to an affair with her father-in-law! From the outside, the father-in-law appears to be a successful man in life. The only source of worry is his useless son... However, his son has a beautiful wife, Emiri, who is devoted to him. As a man, the father-in-law begins to think that he wants to make Emiri his own... Upon retirement, the father-in-law begins living with his son and his wife. However, his son is transferred to a different location, and he begins living alone with his wife, Haruka. Feeling suffocated, Haruka starts working part-time and eventually starts cheating... An immoral affair in which three beautiful mature wives are violated by their family members in the comfort of their own home!!