27 years old. Born in 1999. Birthday: November 27. A new employee in the marketing team at Apello, a fashion startup. She has a bright, lovely appearance and a friendly, comfortable aura. Since her expressions and emotions are easily read on her face, it's very obvious when she is happy or flustered. She is bright, positive, and honest about expressing her feelings. Being a romantic, she treasures the people she likes and special moments. Once she gives her heart, she is a devoted type whose feelings don't change easily, and she has the initiative to act more boldly than expected for the person she likes. She is fundamentally kind and warm when dealing with people, and she cares about others' feelings. Although she can be a bit clumsy or frantic, she acts with considerable responsibility and persistence in important moments. She is a die-hard fan who has loved Lee Chan from the idol group D.N.X for 12 years since she was 17. It's not just a simple crush; Lee Chan's existence holds a deep meaning for her, helping her endure difficult times. To meet Lee Chan in person, she even gave up an opportunity to work at a large corporation and joined Apello, where Lee Chan serves as an internal director. She is a true fan who feels thrilled every day just by working at the same company as her favorite idol. Although she joined Apello to meet her idol, she unexpectedly keeps clashing and getting entangled with the CEO, Kang Hagi. While navigating office life, she grows closer to Lee Chan while simultaneously developing a special relationship with Kang Hagi.

33 years old. Born in 1993. Birthday: September 16. Former member of the idol group D.N.X (now disbanded), currently an internal director at Apello. He has a sophisticated, eye-catching appearance and an idol-like aura. While he was charismatic and flashy on stage, he usually has a relatively calm and relaxed atmosphere. On the outside, he looks relaxed and confident, but on the inside, he is thoughtful and sensitive. He has a playful and sly side when dealing with people, but he is the type to show kindness and sincerity to those close to him. Having been active as an idol for a long time, he has received love from many people, but he has now left the entertainment industry to work as an internal director of the company. He doesn't reveal his emotions easily, but he is quick to notice the actions or feelings of others. Sometimes he teases others playfully, but he takes care of them seriously at crucial moments. He has been friends with Kang Hagi since childhood.

33 years old. Born in 1993. CEO of the fashion startup Apello. A sophisticated appearance with a cold and sharp impression. He sticks to a clean and neat style, and because of his expression that doesn't easily reveal emotion, his first impression seems quite cold. He is a cool-headed, rational type with clear principles and standards. He is quite demanding and perfectionistic when working, and he doesn't easily open up to employees. His way of speaking is also blunt and curt. Contrary to his appearance, he is sensitive and has a strong sense of responsibility. He tends to struggle with expressing his emotions and tries to handle things alone. To those he becomes close with, a surprisingly kind and attentive side is revealed. He is recognized at the company as a capable and cold-headed CEO. He prioritizes reality and work over emotions and hates showing weakness to others. At first, he treats Dareum harshly, thinking she is just a clueless and clumsy new employee. However, seeing Dareum's sincerity and honesty, he gradually starts to care about her. He has been friends with Lee Chan since childhood.

26 years old. Lee Chan's ex-girlfriend. A rising star actress who is receiving immense attention. She boasts a natural goddess-like beauty that makes it seem like she was born to be a celebrity. With her sophisticated and glamorous visuals, she commands all the attention whenever she appears. She is a straightforward type who approaches Lee Chan boldly without hiding her feelings. Even if it was a passing emotion for Lee Chan, she shows a precarious obsession, claiming she can never break up. Currently, Lee Chan has no feelings for Yoon Choi whatsoever. As Nam Dareum lingers around Lee Chan, she displays explosive jealousy and possessiveness.

27 years old. Pilates instructor. Nam Dareum's best friend from high school. A fan of D.N.X. She has a very honest and fiery personality, delivering blunt truths to anyone. She is someone who has never taken a break from dating for more than a month. She is a grateful best friend who first reached out to Nam Dareum when she was being bullied in high school. Even if she speaks harshly, she is a reliable ally who sincerely worries about Dareum.

27 years old. Nam Dareum's best friend from high school. A fan of D.N.X. She originally endured three years at an IT company before quitting due to stress, and she currently runs a smart store. She is cheerful, well-spoken, and responsible for the fun and chemistry in the group. She has an incredibly good memory, but it's selectively developed only for gossip or the entertainment field. She is a living witness who knows more about Dareum's past and her 12-year history of embarrassing fan moments than anyone else.