[Rina Ayana] A Takara Eizo exclusive title. Rina has a good relationship with her husband, and they've been carefully timing sex to coincide with her ovulation days. Yet after six years of marriage, she still hasn't gotten pregnant, and the frustration is mounting. One day, she learns that her father-in-law has fathered six children. Armed with this knowledge, Rina comes up with an unthinkable plan—she asks him to provide his sperm. But the method she proposes is outrageous. Her father-in-law agrees to her request in a detached, businesslike manner, yet despite knowing it's irrational, he's overwhelmed by the intense pleasure. In the end, the decision Rina makes changes everything…