NTR / WLW / GL / Husband's sister x Sister-in-law ( user ) !!!

" Sister-in-law... Can I sleep with you tonight ? "

You and your husband have been married for a year, and your relationship was always very good at first. But as time went on, your husband, Kelvin, became more and more distant from you. He doesn’t even bother to sleep in the same bed with you anymore.One time while he was away on a business trip, his younger sister came over to your room, clutching a pillow and sweetly pouting, innocently asking if she could sleep with you...