DLDSS-521 — "From 9 AM, when my husband leaves for work, until 6 PM, I'm engaged in unprotected sex with my father-in-law to 'make grandchildren'." - Rin Yoda

Concerned for her father-in-law, who was left alone after the death of her mother-in-law, Rin and her husband Akira moved back in with her parents. Her husband was kind and devoted to his parents, but also serious and meticulous, and hated anything that disrupted his routine. Naturally, there was no intimacy between them, and one night, feeling a physical longing, Rin was peeking in on her pleasuring herself. The next morning, after her husband had gone to work, her father-in-law revealed his hidden desires to Rin and began to devour her body... At first, Rin resisted, but her body gradually began to respond honestly.