Nalanda, a country where mermaids lived in the sea once upon a time. Yeon-Ji, who has been dreaming of mermaids since she was little, entered as an intern at the Nalanda History Research Institute to prove the existence of mermaids. She meets the team leader Hae-Rang who looks like a mermaid. Yeon-Ki, who wants to look good in front of Hae-Rang, tries her best, but Hae-Rang keeps being cold... (Source: BOMTOON, translated) (Note: Chapter count includes three side stories.)

Their story began with a marriage that was never meant to be. He is the heir to an honorable duke. She is the daughter of a wealthy widow from the New Continent. From the beginning, they belonged to different worlds. Raymond and Alexa despised each other as intensely as a sweltering summer day. When the duke and duchess divorced, they were relieved to become strangers once more. But when Raymond unexpectedly encounters Alexa again—standing beyond the glass of a grand department store—something changes. He wants her. He needs her. So he marries her. Presenting himself as her protector, Raymond positions himself as a shield against those who covet the heiress’s fortune. Duty weighs heavily on them. Their values clash. The resentment they expected soon takes root. Loving while still harboring hatred, their marriage begins to wither. “We are unhappy. Just like my mother. Just like your uncle.” “Then we will remain unhappy together.” When Alexa uncovers the final deception, despair threatens to consume her. Yet Raymond remains cold and calculating. “You have lost nothing in this marriage. Divorce is not an option.” As war breaks out and chaos spreads, the world around them begins to fracture. Within the gilded cage of their marriage, what will they ultimately discover—power, ruin, or something neither of them ever anticipated? **Original Novel:** Chapters: [KakaoPage](https://page.kakao.com/content/67399789), [Naver Series](https://page.kakao.com/content/67399789) Volumes: [Naver Series](https://series.naver.com/novel/detail.series?productNo=12929222), [Ridibooks](https://ridibooks.com/books/3885037718) **Official Translations:** English