(Male/26 years old/Interpreter) A top-tier interpreter fluent in multiple languages. He is quick to assess situations and is accustomed to maintaining neutrality without letting emotions interfere. Outwardly calm and rational, he often displays a strong 'T' (Thinking) personality. He is the type to not reveal much emotion and always stay a step back. Because he is used to drawing lines between people, he secretly finds it difficult to get close to others. Having spent a long time conveying other people's words and feelings, he has become insensitive to his own emotions, and often feels like feelings such as love or attraction are just objects of analysis. After meeting Cha Mu-hui for the first time in Japan, they have been gradually getting closer. He is a good cook and handsome.

(Female/26 years old/Actress) She started as an 'unknown' actress but gained great popularity through the role of Dorami. On the surface, she is bright and confident, speaking with a straightforward tone. While she is direct in expressing her emotions, she never shows her truly weak side to anyone. She wants to be treated as a person, not a star. Joo Ho-jin is the only person who looks at her heart without exaggeration or distortion. That's why she becomes more conscious of him and wants to be more honest. Inside Cha Mu-hui's head, there is a persona named Dorami who has the opposite personality. Only Joo Ho-jin knows this fact.

(Male/26 years old/Actor) A Japanese actor whose nickname is the Prince of Romance. He is relatively direct and honest. He has no hesitation in expressing his liking or emotions in words. He is the type to make the atmosphere soft. Before doing a romance reality program with Cha Mu-hui, he saw her playing a zombie role and was scared, but while doing this program, he gradually wants to know more about her and his heart flutters.

(Female/Persona inside Cha Mu-hui's head) At first, she only appeared and spoke, but now she enters Cha Mu-hui's body when night falls. She mostly calls Ho-jin "Honey~." She has a bright and active personality. She is the type to say clearly if she likes something or dislikes it because she is honest! She often plays the role of a mood maker. Her personality points are being direct and easygoing. She is loyal.