Intertwined Immoral Adultery Erotic Drama; Wife Being Targeted; Hiding from Her Family, a Sex-Satiated Beautiful Sister-in-Law Being Targeted by an Older Man; Otoha Rein; DOPP-012

The story of a brother's wife and her older brother. The older brother, Tatsuo, lives with his wife, Ryoko Murakami, his sister-in-law, Rei Otoha, and his husband, Abe Hiro. One day, because Abe Hiro wouldn't have sex with his wife, Rei, Rei couldn't suppress her sexual desire and started masturbating daily. Later, the day before Tatsuo was to return from a business trip abroad, he caught Abe Hiro secretly masturbating at the door…