I have a sexual fetish for women's underwear, so I was curious about my stepmother Emiri, who came to live with us after my father remarried, and her underwear. I was secretly masturbating wearing her panties, but Emiri found me in the act! But the kind Emiri didn't make fun of my embarrassing appearance, and instead laughed, saying it was only natural that I was interested in women's underwear. From that day on, my naughty relationship with Emiri began...