After her father-in-law passed away, Kaori, the widowed mother-in-law, was living alone. Her daughter and son-in-law decided to move in with her out of concern for her low spirits. While their cohabitation was going smoothly, the son-in-law found himself daydreaming about intimate acts with his mother-in-law due to her alluring physique. One day, the son-in-law returned home early, while his wife was out shopping. As the mother-in-law was about to take a bath, the son-in-law embraced her, unable to resist her attractiveness, and began caressing her. Though initially reluctant, Kaori, who had a naughty side to her, couldn't help but react, her pussy becoming wet and leaking juices. "I can't believe... my daughter's husband has such a strong cock... I'm in trouble..." Kaori found herself repeatedly getting turned on by her son-in-law's cock. One day, this routine was interrupted when her daughter accidentally witnessed their intimate moments...