DASS-475 A young wife, Riho Fujimori, is impregnated with the seed of her perverted father-in-law in order to give birth to an heir.

Although she loves her husband, she has to give birth to her father-in-law's child in place of her impotent husband in order to keep the blood of the noble family alive. Although she feels disgusted, she cannot refuse and her father-in-law continues to cum inside her.