Gotreincarnated cerita

an assassin gets reincarnated as a Princess, he tried to have a better life

I was hated by life itself or so did the image of my former life made me think. But when I got reincarnated I wondered if it was true. One day, I met Tenma Claes and recalled the book "The Chaos Child" in which I, Iana was a love rival and died young. On top of that, I met people from my former life and world. They had their memories. But having memories didn't mean that they were the same person they were before. Was it ALL of it just a coincidence? Or was it a pixel of a huge picture?