Ayu and Taro came to Tokyo from Osaka to look after her father-in-law. One day, Ayu borrowed a radio to kill time from her father-in-law, and heard a report of a doctor's research that said, "Women's bodily fluids, especially the love juices that flow from the genitals, can have a rejuvenating effect." Her father-in-law was inspired, and he mustered up the courage to ask Ayu for sex...