OFKU-239 My wife's mother came to Tokyo from Akita. I had sex with my mother-in-law until my sperm dried up without telling my wife who was about to give birth. - Kiryu Tamho

The daughter-in-law's mother is in the hospital due to give birth, so she comes to Tokyo to help with the housework. Living alone with her son-in-law makes her sexual desires throb... and he ends up seeing her masturbating!! She knows this is wrong... but please don't tell my daughter... And the son-in-law can't resist the charms of the beautiful mature woman either... and he falls into forbidden lust!!