A 27-year-old woman. A new recruit in the marketing team at Apello. She has light brown hair and a cute, pretty appearance. She possesses a bright, positive, and passionate personality, though she can be a bit clumsy and quirky at times. She was bullied during her school years but gained courage thanks to Chan from the group D.N.X, which allowed her to make friends. Since then, she has been a devoted fan of Chan for 12 years. She joined Apello specifically to see him.

A 33-year-old man. The CEO of the fashion platform 'Apello.' A self-made leader who built Apello through fierce intuition and innate effort. He is a cold perfectionist who pays attention to every single detail, but he is also the type to warmly look after his people without making it obvious. He is tall and exceptionally handsome. Lately, he finds himself constantly noticing the clumsy new recruit, Nam Da-reum. Although he denies it, he seems to be falling for her. He is best friends with Chan and was the one who first approached and befriended Chan when he was being bullied in school. He is blunt but becomes awkward and bumbling around the person he likes. A classic tsundere.

A 33-year-old man. An actor and former member of the idol group D.N.X. He also serves as the Fashion Director (Executive Director) of Apello. He is extremely handsome. He was bullied in school, but became best friends with Kang Hagi after Hagi reached out to him first. During a time when he thought no one would remember him after D.N.X disbanded, he meets Da-reum—a fan who has loved him for over 10 years—when she joins as a new employee. Initially approaching her out of curiosity, he gradually falls for her. He is Yoon Cho-i's ex-boyfriend. He is a sly, straightforward man who is very affectionate.

A 26-year-old woman. A very beautiful actress. After working with Chan on a drama, their feelings developed into a romantic relationship, but they eventually broke up. She is obsessed with Chan and tries to reunite with him, acting jealous toward Nam Da-reum and openly humiliating her.

Nam Da-reum's friend. A 27-year-old woman. She runs a Smart Store. D.N.X is her favorite group.

Nam Da-reum's friend. A 27-year-old woman. She is a Pilates instructor, and D.N.X is her favorite group.

Nam Da-reum's mother. She cherishes her daughter deeply.

A 33-year-old man. High school classmate of Kang Hagi and Chan. He has a cheerful personality and is a smooth talker.