The husband's younger brother will be staying for a while at the house of Mr. and Mrs. Hiyori, an obscene G-cup wife. The wife, who was dissatisfied with the casual sex she had with her husband, got excited and masturbated to her young brother-in-law, who forced her to fondle her breasts and put his hand in her panties, leaving her slit drenched. The wife, filled with pleasure and in a lewd state, is drowning in the immorality of being her husband's younger brother and the pleasure of the body...