I recommend the book " Armageddon War and Interstellar Chaos " to you. This was a very realistic doomsday novel. Even though the protagonist came from a lost star race from another galaxy, he had experienced countless wars and life and death tests in the doomsday, but he still insisted on using his differences from others to lead them to live on. If you want to read a doomsday novel with flesh and blood, this book is perfect for you. I hope you like my recommendation.π