I'm staying at my brother's house because of work. My brother and I have different lifestyles, so we don't see each other much, but my brother's wife, Kasumi, is very nice to me, so I'm excited and happy every day. That's because I've been fantasizing about having such a wonderful wife ever since my brother introduced me to Kasumi. One day, my work plans changed and I came home, and I found Kasumi masturbating alone while watching an erotic video. I tried to leave quietly, but Kasumi noticed me. When I ran into my room, Kasumi came in. I nodded when she asked me if I had seen it. She said I despise it, didn't I? I shook my head. I was so nervous that I confessed that I liked Kasumi. Then Kasumi asked me if I would keep what I saw a secret. I nodded, of course, and she said, "In exchange for keeping it a secret," and she closed her eyes and brought her lips close to me...