DLDSS-486 From 9 am to 6 pm, the time my husband leaves for work and comes home, I'm engaged in unprotected sex with my father-in-law, trying to "make grandplayren." - Chiharu Mitsuha

To support her lonely father-in-law after the death of her mother-in-law, Chiharu and her husband, Satoshi, moved in with his parents. Her husband was serious and devoted to his parents, but he was fastidious and never initiated intimacy. One night, as Chiharu was satisfying her own physical urges, her father-in-law secretly watched her. The next morning, after seeing Satoshi off to work, he revealed his aroused desires, pushed Chiharu down, and devoured her again and again until Satoshi returned home at the usual time...