I married my childhood friend. Even after more than 10 years of dating, my feelings for her never faded, and we lived a happy life together, together with my father-in-law, who would occasionally return from his job. But one day, my husband went on a business trip and had to leave the house for a few days. I spent my days alone with my father-in-law, who had just finished his job, and he took advantage of the opportunity when my husband was away to play with my body... His abnormal sexual desire, which never subsided after he returned from his job, taught me a pleasure I had never experienced before.