While my wife was away due to childbirth, my wife's mother came to Tokyo from Isesaki, Gunma Prefecture to help with the housework.For a while, the 40-year-old mother-in-law and her son-in-law began living alone. - . - The son-in-law can't control his slutty and naughty feelings towards his kind mother-in-law! - ! - A mother-in-law and a son-in-law who gradually become aware of themselves as a man and a woman. - She ends up having a secret adulterous relationship with her family! - !