Leo Darmer was just an average 19 years old man living with his father. Well average is what he will say before he discoverd a power that change his life forever. He has always belived that monster are only invented creature,well he stop believing their existence but now, he saw them from his own eyes and they are calling him "majesty". Will he be a good figure of power to this land unknow from humans or will he disapoint all of his subjects. Being the first human king of an kingdom of monster will not be easy.