He encountered a wife who had an exhibitionist tendency and masturbated. (Nana Kisaki, SORA-598)

Even though they were about to get married, the perverted wife still couldn't get enough of playing around and engaging in incontinent orgys... [Story] I witnessed my roommate masturbating while incontinent, and I couldn't resist having an affair with her, gradually falling into an extreme game. Shame and incontinence made me lose myself... #01 I lost control of my bladder completely naked in the common area of the apartment! Shame made the excitement unstoppable... #02 I went to visit my neighbor who was moving, but was greeted by her incontinence while wearing black stockings... #03 We had an affair and I ejaculated inside her without a condom! Her throat and vagina were so tight that I couldn't resist... #04 I remotely made her lose control of her bladder while her husband was present. Gradually escalating... #05 It became a habit, and I repeatedly had affairs, eventually becoming a convenient masturbation tool... #06 I gathered a group of masturbation perverts and held numerous incontinence orgy parties!