When she was little, she had saved up her breastfeeding coupons that someone gave her... She found them again and handed them over to her brother-in-law, telling him he could use them whenever he felt lonely. Her brother-in-law, who used to be bullied at school, would find comfort and strength in his sister-in-law's G-cup elastic breasts every day. Eventually, just being held by her breasts wasn't enough anymore, and they started playing with each other's genitals during breastfeeding play. Even though they both knew it was wrong, they couldn't resist their desires any longer, and ended up having secret anal sex while her husband was away... *The contents may vary depending on the distribution method.