I like this theme so much that I have several novels that I want to recommend to you. Let's see which one you like: 1. " Evolution from a Single Cell ": This was a sci-fi novel about evolution and mutation. The protagonist was reborn as a single cell, started devouring and evolving from the weakest state, and finally transformed into a beast that devoured the starry sky. Super inspirational! 2. " I'll Be a Pet in Doomsday ": This is a novel about doomsday crisis. The protagonist is reborn as a fox cub, but she doesn't want to be a pet! Fighting with their own kind, gradually growing into a superior existence. 3. " Six Years Old, Helping Eight Older Sisters to the Peak of Life ": This is a novel about supernatural powers in the city. The protagonist has been reborn as a six-year-old kid and has eight older sisters out of nowhere? This little wimp is not simple! The three novels above are all very good. I believe you will like them. I hope I can help you. Please feel free to tell me how you feel!