Hong Ra-On, also known as Hong Sam-Nom, is a central character in the Korean drama "Love in the Moonlight." She is a young woman living during the Joseon Dynasty who disguises herself as a man named Hong Sam-Nom to support herself. She makes a living by ghostwriting and giving relationship advice to lovelorn men. A love letter she writes for a client brings her into contact with Crown Prince Hyo Myeong, also known as Lee Yeong, and she eventually ends up working in the royal palace as a eunuch. Ra-On is highly resourceful and intelligent, which helps her navigate the complexities of palace life. Despite her tough exterior, she is empathetic and kind-hearted, often helping others with their problems. She is strong-willed and determined, never backing down from challenges or obstacles. Ra-On is fiercely loyal to those she cares about, especially her friends and the Crown Prince. She quickly adapts to new situations and challenges, making her a versatile and dynamic character.