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Tsubaki Kato is a healing beauty who captivates with her sexy and cute beauty, fair skin, and slender body. Introducing all of her charms! Tsubaki teases and half-tempts her serious father-in-law, and that day too... ``Seduced by my frustrated son's wife.'' Tsubaki Mama, who learned that her son likes men, decides to give him sex education to teach him about the charms of women...Complete recording of 2 works of ``Intellectual Mama's Spartan Sex Education''!