My sister Sora and I were seen as a well-matched pair of siblings by others. However, as Sora grew up and I started dating in college, we spent less time together. I thought I was having a smooth college life, but one day, my girlfriend dumped me harshly, and Sora saw it happen. Feeling sorry for me, perhaps, she said, "Should I be your girlfriend?" and kissed me. From that day on, I was seduced by proactive Sora every day…
