Returning home to my wife's family for the year-end holidays, I was greeted by my sister-in-law acting unlike her usual self. Alluring and bold, she began seducing me, gradually shaking my resolve. Her advances slowly captivated my heart, leaving my body unable to resist. Eventually, I ended up sleeping with her. Though I questioned why such a beautiful woman chose me, I obeyed her words and became completely hers.