Saran married her husband and lives with her father-in-law. Her sex life with her husband was bland, but she was satisfied at first. However, as months turned into years, the frequency and number of times they had sex decreased. Saran's libido was intense, while her husband's stamina reached its limit and he began to complain. Reluctantly, Saran resorted to masturbating during her alone time to make do. Her father-in-law observed this marital life and enjoyed keeping a diary about it. One day, Saran's attire changed; she started wearing revealing clothes that seemed like she wasn't wearing a bra or panties. Initially, he thought this was part of their acts with his son, but looking back at the diary, he noticed her behavior changed around the time his son's activities decreased and stopped altogether. One day, when her husband went to work and her father-in-law left for an errand, Saran was enjoying her alone masturbation time. However, her father-in-law returned after forgetting about his task. Saran, engrossed in her self-pleasure, was caught by her surprised father-in-law. Seeing her painfully gasping, he became excited and took advantage of her. Her father-in-law's experienced caresses were intense, especially his lingering cunnilingus that made her climax multiple times. His member was larger, harder, and more erect than her husband's, and Saran reached ecstasy the moment she was penetrated. A few days later, with the family out, Saran wobbled over to her father-in-law's laundry basket and took out his underwear, gently smelling it. Remembering their act, she slid her fingers down to her crotch and found her own underwear disgustingly wet...
