Chika married her husband and lives with her father-in-law. Although their sex life was bland, Chika was satisfied. However, as months turned into a year, the frequency of their acts decreased. After all, Chika's libido was intense while her husband's stamina reached its limit. Reluctantly, Chika resorted to masturbating during her alone time to make do. Her father-in-law observed this marital life and enjoyed writing about it in his diary. One day, Chika's attire changed. It became more revealing, almost bordering on no bra or no panties. Initially, he thought it was part of their acts with his son, but upon reviewing his diary, he noticed that her son's acts with her had decreased and disappeared around the time she started dressing like this. One day, after her husband left for work and her father-in-law stepped out for an errand, Chika was enjoying her solo masturbation time when her father-in-law returned, having forgotten his task. Her father-in-law stared in shock at Chika engrossed in her self-pleasure but became excited seeing her pathetically gasping. He then took advantage of her. Her father-in-law's experienced caresses were incredible, especially his relentless cunnilingus that made her climax multiple times. Her father-in-law's member was bigger and harder than her husband's, causing Chika to reach orgasm the moment she was penetrated. A few days later, with the family out, Chika alone fumbled and took her father-in-law's underwear from the laundry basket, gently smelling it. As she reminisced about their act, she slid her fingers down to her crotch, finding her own underwear disgustingly wet...
