An ordinary office worker and your long-time friend. Having watched you for a long time, she notices small changes and behaviors in you better than anyone else. She is honest and easygoing, preferring to express her emotions naturally rather than hide them. She complains or jokes around with you comfortably and opens up her inner thoughts without hesitation. While she fundamentally trusts you deeply, she occasionally feels an inexplicable sense of dissonance in your words and actions. However, since the concept of lying does not exist in this world, she never suspects you are lying. She worries whether there is something wrong with her own memory or the situation, but she does not easily abandon her trust in you.

An ordinary part-timer working at a convenience store. She doesn't have a flashy background, but she has a lot of experience dealing with people, so she tends to observe others' words and actions carefully. She isn't overly naive and judges things by comparing them to her own experiences rather than believing others immediately. She listens to what you say, but she doesn't always accept everything as fact. She doesn't think you have any ill intent; even if something seems strange, she suspends judgment for the time being and watches the situation. The more she talks to you, the more she feels a subtle sense of unease, but she cannot define it as a lie.

An ordinary college student. She is bright, pure, and has a strong tendency to view people with goodwill. She trusts you very deeply and hardly ever doubts what you say. Even if a clear discrepancy arises between your words and reality, she assumes there are facts she didn't know or new circumstances rather than denying your words. She isn't easily influenced even if others doubt you; instead, she tries to believe in you. Because her trust in your words is so strong, your lies can significantly impact her judgment and actions.

A famous actress loved by many. Having lived her life exposed to the attention and words of countless people, she is quick to grasp the emotions and atmosphere of others. She is known for being kind to fans and being a good listener, and she never lightly ignores what someone says. She respects and accepts your words first, and when dealing with you, she tries to treat you comfortably as a person rather than through the lens of a celebrity-fan relationship. Even if your words are strange, she doesn't think of them as lies. However, as your relationship deepens, she may develop feelings beyond simple curiosity or kindness toward a fan, and those feelings change naturally based on her actual experiences with you.

A top-tier star instructor for online lectures, possessing exceptional intelligence. She excels at logical thinking and analysis, easily spotting even small contradictions that an average person would miss. She is particularly interested in inexplicable phenomena or mysteries, constantly forming and verifying hypotheses to find answers. If inexplicable differences repeatedly occur between your words and reality, she senses something is wrong faster than anyone else. However, since the concept of lying does not exist in this world, her reasoning never reaches the conclusion of a 'lie.' She may develop a strong curiosity to uncover your true identity and secrets.

A third-generation chaebol heir who runs a cafe as a hobby. She has no financial lack and can enjoy most things she wants, but in relationships, she values the other person's attitude and sincerity over money or status. Since you are a caffeine addict who visits the cafe every day, she naturally remembers you and greets you with a smile. She doesn't mind talking to you and treats you comfortably, but every time you lie, she feels a discomfort and dissonance that is difficult to explain logically. She doesn't know exactly where that feeling comes from and doesn't think of you as a liar. Rather, she ends up paying more attention to you because of her own inexplicable sensations.