I live with my father, who has a bad drinking habit and constantly cheats on my mother. I've always been frustrated inside whenever he brings another woman home. One day, I noticed one of his girlfriends seemed different—she was a stunning black-haired beauty unlike any before. She caught my gaze deliberately, even as my father was having sex with her. Her moans deeply stirred my emotions, and I couldn't resist masturbating repeatedly. Later, she began secretly seducing me, taking advantage of moments when our coworkers weren't watching.