Mika lost her husband in an accident and had been living alone with her daughter. After her daughter got married, she moved in with her daughter and son-in-law. Life as the three of them was happy, but there was a problem: she could hear the couple’s nighttime activities and her body would become aroused. She spent her days relieving herself by masturbating. One day the three were drinking together. When Mika fell asleep, the daughter and her husband began making love beside her. She woke up but pretended to be asleep. After it was over.