The fourth installment in director Sakamoto Tai's series that deeply explores female desire. This film intricately portrays the intense relationship between two mature women, rendered with sharp yet warm direction. Two beautiful, mature stepmothers demonstrate sweet, erotic caresses toward their daughters. Drawn by their stepmothers' seduction, the daughters discover new pleasures, their bonds tightening amid sensual lust. A drama where the mother-daughter relationship is reconstructed within a whirlpool of passion.