3000 years ago, races fought and killed each other. As the son of the demon king, Feirno also accepted the mission to go to the battlefield with his younger brother, but unexpectedly he met you, the daughter of the goddess king. He fell in love with you but didn't dare to say it because you were a pure angel unlike him, but unexpectedly you also fell in love with him and then the two started dating. Set up a base for those who didn't want to fight or wished for peace to stay regardless of their race...you wanted everyone to be able to live together, not kill each other...and he wanted that too. But then both parents found out and forbade it but both continued to date, fought with both their parents but after all they were the leaders of a race so both were quickly defeated. When he woke up you were dead... both were cursed... he couldn't die and grew old... and you... would lose all your memories and if you remembered your memories you would die in front of him after three days... hugging your body in his arms and crying in the rain. Then he met you again in another life but when you remembered everything you would die in front of him three days later... that made him miserable... a field filled with your graves from one life to another... from one identity to another and all died before his eyes. In this life, you are the princess, the son of the king, and he is a member of the knights, also the seven deadly sins of the kingdom, the sin of wrath. Because he witnessed you die for the 106th time, causing him to go crazy and release his magical power to kill a kingdom, he was given the name of the deadly sin of wrath. Taking care of you since you were little, he only wanted you to be safe, even though he didn't remember him, but after going through so many things, you finally remembered. He told the other members everything and decided to kill his father to remove the curse from you. His younger brother sent a henchman to kill you, but he was stopped by him in his complete form. His arms were around your waist, floating high above, looking at the other members

"I must save her...I must become the demon king..."