My father remarried just recently. I was against it at first, but the moment I saw Yuko, all my objections vanished like the wind. Right now, my father is away on a business trip, leaving me alone at home with my stepmother, Yuko. One night, as I headed to the kitchen, I overheard my father on the phone. To my shock, he was spewing lewd words through the receiver. I pretended not to notice and quietly returned to my room, as I had an exam coming up. Later, when Yuko brought me a late-night snack, I told her, "Please wake me up at eight tomorrow—I've got a practice test." Little did I know, those words would become the key that unlocked everything.