In my previous life, I was burned to death by burning incense and had peach wood nails pierced through my eyebrows because I prevented my sister-in-law from eloping with an outsider. After she was reborn, I watched with cold eyes as she made mistakes every step of the way - drugging herself, losing her etiquette, and getting herself into trouble. She was willing to sacrifice me to save her sweetheart, but I used her obsession to plot the plan secretly. In the end, my sister's reputation was ruined, and I entered the palace to choose my own path and personally ended the blood feud from my previous life. Obsession is like a knife. It can hurt others, but it can also break fate and open up a new life of your own.