Reincarnation of scientist

He was called the most sinful man in existence. After his death, he expected eternal punishment, but instead of hell, he received a new life. In a world of magic and endless possibilities, he decides to start over. However, the ghosts of the past haunt him, and his hatred for humanity only grows stronger. Every step brings him closer to answering one question Can humanity be forgiven for its sins? Or is the only way to save the world to destroy everything that makes people human?