The Kingdom of Hesperia and the Kingdom of Nereus have been enemies for decades until they finally decided to marry their sons and daughters. Kieran, who is the crown prince of the Kingdom of Nereus, refused this marriage because he was upset knowing that he would marry one of the princesses of the Kingdom of Hesperia who had a weak physical condition. That's when feelings of revenge and hatred began to grow. He wants to make you suffer, he wants you to live like hell. If you count this, it's already the 3rd month of marriage and he really makes your life like hell.