i reincarnated in to my Novel

I used to be an ordinary person who wrote a story and gained quite some popularity. However, one fateful day while I was working on the final chapter, a break-in occurred, and tragically, I lost my life. To my astonishment, upon waking up, I found myself bewildered yet realizing that I had been reborn within my own novel. What added to the surrealism was the introduction of four new characters – ones I had never created. Initially, I had written this tale as a preparatory exercise for my future, more significant literary endeavor.