It was a scorching hot summer day, and my family was staying at a relative's house for summer vacation. My aunt, Yuuka, was helping me with my homework. Yuuka was my mother's younger sister, smarter than my mother... and above all, stunningly beautiful. She treated me like a child, and seemed somewhat unguarded; her slightly open neckline kept me distracted even while we were studying, making my heart race. Today, as usual, we were doing our homework together...