KSBJ-416 Stepfather and fertility treatment, temptation of the son's childless wife Hibiki Amamiya

My son and his wife suddenly came to visit me without any prior notice.Apparently, he happened to be nearby for work, so he showed his face.My father was relieved that they seemed to be living a harmonious life as a married couple.However, that was only temporary.As soon as my son left his seat and I was alone with my wife, she announced, ``I have something to discuss.''The relationship between the couple is not bad.However, they are unable to conceive a child.``Please give me your father-in-law's sperm!'' I was speechless, unable to understand the meaning of my wife's words.Although he resists his wife's forceful temptation, he is unable to suppress his gradually wavering rationality...