The elite career woman’s sister was actually a serious brother complex.
When she enters college and goes up into her brother’s room where she started living alone and starts cleaning her, she finds an anal AV.
Her older sister, who was interested in anal after seeing the DVD, started anal masturbation as it was.
She sees her strange sight as her younger brother Takashi returns there, but her crotch swells in her sister’s ass that sticks out and forgets her self and anal vigorously Dive into.
Her sister became Takashi’s meat urinal to monopolize her pleasure.