Aoi Rena, a sex-addicted woman who turns on when she sees a dick that is imprisoned by her brother who lives alone

While at his older brother's house, where he lives alone, his younger brother discovers a woman who has been imprisoned with his arms and legs tied to chains... "Why is that kind brother?!" Thought this, he released the woman and washed her dirty body, the woman who had been quiet up until now suddenly transformed into a lewd slut, as if the switch had been turned on, and attacked her with her younger brother's dick!!