Mikiko had an affair with her husband's subordinate due to frustration, even though she married her husband who runs a construction company. One day, she was crazy about her SEX, and her secret was known to her husband's stepchild, Toshihiko. Mikiko is forced to take advantage of her weaknesses and tell her to do what she says. Despite her refusal and begging, she has no escape and finally sucks on her stepson's dick. Mikiko gradually loses her reason while she is called a "sex slave" and is relentlessly fucked.
