kanna has been living with her daughter and son-in-law since her husband went on a business trip two years ago. One day, she was mistaken for her daughter by her drunk son-in-law ichiro and approached. She was captivated by his surprisingly large dick. Since then, she has become addicted to his huge cock, using the excuse of "for her daughter and son-in-law," she openly seduces ichiro day and night. Unable to resist the allure of the shameless mother-in-law, the sexually frustrated son-in-law is repeatedly milked by her.