HBAD-500 A steadfast daughter as a mother substitute and incest handling household chores to family's sexual desires all in one good daughter Sakuma Emi

The younger brother and sister were both highly sexed, inevitably having a physical relationship and secretly handling their sexual desires without the stepfather's knowledge. However, due to her younger brother's passive attitude, she became frustrated and began to wish for the stepfather to rape her. The stepfather had been patiently taking care of his daughter, but after witnessing the relationship between his son and daughter, he couldn't hold back any longer and thrust his thick member into her, satisfying each other.