It had been quite some time since I last visited my wife's family home. So, when I saw Chihiro (my wife's younger sister) with a different atmosphere, I was taken aback. Chihiro, whom I always thought of as a child, had grown into a woman. I became aware of her as a woman. When my wife went out and we were alone, I couldn't hold back the sudden surge of lust and ended up raping Chihiro.
