His wife, Yumiko, began to change around the time she hired a tutor for their son. Perhaps the young man, a university student, was attracted to his innocence...? They seemed friendly with each other, and Yumiko, who normally wears no makeup, spent time applying it... Out of concern and a sudden impulse, he set up a hidden camera in their bedroom. Surely that couldn't be true... But he was mercilessly...