Minaho's husband passed away two years ago, and her daughter was worried that her mother would be lonely, so she moved back to live with her mother and husband. Shinji is a good husband, loving and always helping Minaho. The only thing is, sometimes she hears her daughter's moans during sex. As a married couple, this is normal. However, those stimulating sounds trigger Minaho's past memories. Before having a child, Minaho was addicted to sex. Every night, she would bring a different man to bed. Of course, none of them used protection so that Minaho could feel the man's entire penis inside her. After having a child, she adjusted herself and focused on taking care of her precious daughter. But now, that sexual desire has resurfaced once again. When her daughter was sent for training by the company, Minaho used her beautiful body to seduce her son-in-law, draining all his sperm inside her vagina! Although feeling guilty towards his wife, Shinji found having sex with Minaho much more pleasurable than with his wife, so he quickly ignored everything and ejaculated inside her. Some time later, Minaho got pregnant, and both of them kept this relationship secret from Arisa, and of course, they continued to have sex with each other, so much that Minaho lost count...