Maki, who lives with her daughter and her husband, originally had a serious personality and only knew ordinary SEX. - However, one day, I learned that my daughter and sexless son-in-law, Tetsuya, were secretly calling a nipple torture deriheru ... - She couldn't suppress the pain that boiled up from the depths of her body and blamed his nipples "to get along with her husband and wife". Maki, who can no longer suppress her excitement at Tetsuya, who reacts in an interesting way, steals her daughter's eyes and torments his nipples everywhere.