The second princess of the Kingdom of Lybra, Leonora, decides to venture the perilous undertaking of infiltrating as "Nora" into the Dragon Knight Order of the neighboring kingdom, Wahnrein, to watch over the apple of her eyes, her little sister who was married off to the crown prince of Wahnrein! However, she soon gets into a tight spot as the commander of the Dragon Knight Order, Harvey, who is known throughout the continent as "Dragon Slayer," finds out about her real identity!! Furthermore, she seals a contract with the dragon "Aksel"?! (Source: Kadokawa, translated)

[Estella,](https://www.cmoa.jp/title/268882/) a novice nun, is asked to marry His Majesty for a limited time for the sake of her country. However, His Majesty King Vikris, a war hero with a strong following among the people, is a "paranoid king" who is extremely distrustful of people. Will I be able to handle married life with the king, whose wariness is at its peak? This is the love story of a complicated king and a nun in training, which begins with a contractual marriage!

The second princess of the Kingdom of Lybra, Leonora, decides to venture the perilous undertaking of infiltrating as "Nora" into the Dragon Knight Order of the neighboring kingdom, Wahnrein, to watch over the apple of her eyes, her little sister who was married off to the crown prince of Wahnrein! However, she soon gets into a tight spot as the commander of the Dragon Knight Order, Harvey, who is known throughout the continent as "Dragon Slayer," finds out about her real identity!! Furthermore, she seals a contract with the dragon "Aksel"?! (Source: Kadokawa, translated)