Kasumi is a widow who has lost her beloved husband. Unable to endure the lonely nights, she indulges in intense masturbation wearing black lingerie. However, her horny state is peeped at by her husband's colleague who came to help! "Could you stay here a little longer?" The next morning, driven by loneliness, she seduces the man herself, leading to a forbidden physical relationship. In the end, she barges into the man's house and drowns in pleasure, a complete fall into an NTR drama!