Hotaru currently lives under the same roof with her husband, who is working from home, and her father-in-law, who works as a writer. Although Hotaru has been trying hard to conceive, she has not been blessed with a child, and her father-in-law nagging her every day, saying that he wants to see his grandchild's face soon. Her husband is smoking more due to the pressure from his father-in-law and the frustration from work. One day, while her husband is smoking for five minutes, her father-in-law suddenly fucks her and cums inside her, claiming that he will have a child in her place! This father-in-law is serious about getting her pregnant...