My name is Hiryur, i live in world whit magic and elementals.. but.. i have one of the strongest what is dark, and its not good magic, its bad so that's why im the demon king, everyone knows not to attack my castle but.. every once in while one ''hero'' defeats me whit his light magic, only 1 human can have dark magic and only 1 can have light magic, has own army of monsters, and has own castle but im still 19..