【The Oppressed Royal Younger Sister × The Stubborn Frontier Knight】 Liza, the King's younger sister who had been confined to a detached palace due to her mother's low social status, is ordered by her older brother, the King, to enter a political marriage with Count Erland of the frontier. Just as she thought she could finally escape the detached palace after marriage, Erland left her behind at the royal palace, saying, "I cannot take you to the frontier," and she continued her life in the detached palace... Liza waited for five years, believing Erland's words that he would definitely come for her, but one day she hears that a letter of divorce is being sent from him——!? A "misunderstanding" romance spun from a reunion after five years.