This is an anime with 24 episodes. When this anime was released in 2018, it was a man that many people paid close attention to, and the anime is still popular today. With a super high score of 7.0 points, not only there are many characters in this anime, but the plot is also quite ups and downs. In this film, there are many thoughts that are not related to the real world and the logic of reality. The universe in this animation is also different from the universe in real life. In this universe, the existence between humans and hostages has become the main contradiction. The robots in this TV series are also existences beyond human intelligence. In the process of robot survival, a 17-year-old boy met a robot, and signed a master-servant contract during the two people's life together. As a robot developed by high-tech AI, it has surpassed human beings in every aspect. What should these masters and servants do when the war between humans and robots is about to start? How should they look at each other?