Your Royal Highness, She Is the King

An imperial edict disrupted the relationship between three people; an unparalleled sword disrupted the world's history and trajectory. Destinies are intertwined in various ways, involving many secrets. Secret techniques, demonic teachings, strange eyes, advent... She is the ninth princess, who is calling her the king? Identity is blurred and the world is constantly overturned. What is true? What is fake? What is love? What is love? She is the Ninth Princess who does not believe in sincerity, is lonely and cold, and he is King Jinnan who has hands and eyes as bright as the sky and is obsessed with love. He loves her, but what about her? No matter how broken the world is, I will never let you bear it alone. "Your Majesty the Ninth Princess, I am willing to be my subordinate and my best minister forever." —— "This world is barren, turbid, dirty, and ugly. This world should be replaced... King." —— One sentence to describe the male protagonist: King Jinnan, who is evil and jealous, pretends to be good and clever but is really yandere. A revenge princess x a prince with different surnames, marry first and fall in love later, a fantasy.