"Please! Just Intercrural Sex!" I Begged My Frustrated Beautiful Sister-In-Law To Take A Brush Down On The Dogeza, And When I Secretly Painted Aphrodisiacs On My Cock, I Started Estrus While Intercrural Sex And Immediately Inserted It! ! Aoi Matsushima

Yosuke, who is freeloading at his brother's house, has feelings of guilt for his brother's wife, Aoi. One day, Yosuke witnesses Aoi masturbating due to frustration. "Please! Just once!" "...Will you absolutely keep it a secret from that person?" Surprisingly, Aoi accepts Yosuke's request with the condition of "only intercrural sex." However, Yosuke had a secret medicine prepared for this day...