Ever since my mother introduced her today as my new sister, I've felt an uneasy restlessness deep inside. This little devil quickly noticed I was still a virgin and began teasing me relentlessly whenever she got the chance. She'd spy on me having sex with my real father, then go on to seduce and sleep with two of my friends. One after another, she launched attack after attack. I had no rationality left. Though we weren't blood related, I was forced into the role of her brother—and even that boundary became impossible to maintain.