After buying a DVD I spotted at the store, I was shocked to discover my own little sister appearing in it! She's in a swimsuit, saying "I love you so much, big brother," and her voice sounds exactly like my sister's—there's no mistaking it. When I listened to it after my parents had gone to sleep, she pleaded, "Please keep this a secret from everyone." I replied, "Sure, but will you grant my request?" She simply answered, "Okay." The whole situation feels strangely real, creating an unexpectedly thrilling and arousing scenario.