Mio, a beautiful wife who has settled down in marriage life in the housing complex and has begun to think about making children.However, her passive attitude toward her husband, not to mention her child-making, was unmanageable in her daily libido, and she began to comfort herself from time to time.One afternoon, when she was stroking one of her sensitive parts, when she lifted her face, her middle-aged neighbor, Takeshita, who appeared at her moving greeting, met her eyes through her window. .The two, who were never supposed to be together, witnessed this masturbation, and later became involved in a violent affair that made them sweaty.