Ayano recently started doing yoga to tighten up her sagging belly. Her son was annoyed at his mother for always giving up after three days no matter what she tried, but when he looked over at his mother, he found her plump body, slightly sweaty, strangely sexy and he couldn't help but stare at her. He was filled with lustful fantasies, and from then on, he couldn't help but think about his mother, so he finally...