I'm the worst person ever for lusting after my own brother's daughter... My niece, whom I reunited with after seven years, is right in the middle of puberty. Even after we started living together, she was curt with me and seemed to be avoiding me. However, the defenseless way she dressed in her loungewear at home drove my masculine rationality crazy day by day. Then one day, when my brother and his wife went out and we were left alone, I finally couldn't suppress the impulse and attacked her. After realizing the gravity of what I'd done, I felt like I was barely alive, terrified that she would tell my brother everything. But even after several days, my brother's behavior hadn't changed. For some reason, she remained silent. I wonder what she's thinking... Even when I try to do something lewd again, she doesn't resist. Since then, while hiding from my brother and his wife, the days of having quiet sex with my niece, who is 17 years younger than me, have continued.