The Bihara family, where the wife, husband, and father-in-law live happily together. However, troubled by not being blessed with children, she consulted her father-in-law. Although her father-in-law couldn't find an answer, the wife, who thought that her husband had many siblings and that her father-in-law's sperm might be strong, ends up asking her father-in-law to inseminate her. The wife, who initially thought she was starting it as a job, gradually becomes addicted to sex with her father-in-law. There was a promise that the relationship would end if a baby was born, and when she found out she was pregnant, the relationship between the two ended. But after giving birth, the two of them, who finally couldn't stand it anymore, resumed insemination intercourse...
Takara Eizou
