Miki and her husband remarried four years ago, both bringing children from previous relationships. While there were some worries, her husband's son was kind and got along well with Miki's son, even treating him like an older brother. Miki's son has always struggled to figure out masturbation on his own and relied on his mother for help. That day, he whined and begged Miki to assist him. Coincidentally, his older brother walked in on them. One evening, as Miki was getting out of the bath, her brother approached her and said, "I saw it..." He reached out and touched Miki's crotch. From that day on, he started pressuring her relentlessly...