The female protagonist of an ancient novel read in middle school liked her senior brother at first, but her senior brother liked the beautiful second female lead. After the female protagonist and her senior brother went down the mountain, they married the king (male protagonist)

Later, the female lead fell in love with the king. The second female lead went to the king's bed and was ordered to die by the king. The senior brother sought revenge for killing his wife from the king... The female lead also had a fiancé (who seemed to be a general). The male and female protagonists knew each other when they were young, but the female protagonist temporarily forgot about it. At the end, when the male protagonist woke up from his coma, he called out his name and the sound of firecrackers, the female protagonist remembered.