On a midsummer afternoon when the record-breaking heat wave continued, my mother left me on a trip and took care of me while my aunt Yuka took care of me. Alone under one roof, I couldn't stop my heart pounding when I saw the sweaty Yuka. One day, when I came home from prep school, Yuka asked me a question. I couldn't answer, "Is Takashi-kun interested in girls?" but Yuka with a bewitching smile attacked me.