I am a scientist from another time and place. After crossing over, this world has brought me a lot of harm. This rotten world has begun to corrode from its roots. I will start from the rule of a small city and gradually evolve this miserable world. (There are three races in this world: humans, gods and demons, but the one that hurt me the most is the human race after all.)
Purpose: The world is unfair to you, so you need to use your own strength to prove that one person can influence the world