Kaori, who became a mother-in-law due to her father's remarriage, had a secret crush on her son-in-law, Ataru. Ataru, who was trying not to show his emotions to his mother's Kaori, even though he was in-law, relieved his stress by taking a voyeur of Kaori. Ataru witnesses Kaori masturbating at home one day. Even though I was excited, when I secretly took a picture of it and tried to browse it in my room, Kaori came into the room.