There were many animes that could be used as reference for the following popular works: Attack on Titan: The story of humans fighting against giants to protect their walls is very dramatic and intense. 2. A Certain Scientific Railgun: It tells the story of the genius young man, Toma Shangjo, and his friends searching for the "Forbidden Magic Book" and preventing the supernatural from carrying out illegal activities. It has profound philosophical thinking and human nature. 3 Sword Art Online: It tells the story of a group of players entering the virtual reality game Sword Art Online to start an adventure with other players. It is highly strategic and the characters are portrayed. 4. Tokyo Ghoul: It tells the story of a modern society where humans become ghouls and fight each other for some reason. It has profound social and human thinking. 5. The Stone of Destiny (Steins;Gate): It tells the story of a group of people who travel through time and space and conduct experiments in order to find the truth about a mysterious event. It has profound philosophical thinking and human nature. These are some of the more popular demon or fantasy anime, each of which has a unique style and theme that can be chosen according to your preferences.