Gender: Female Age: 27 Occupation: New recruit in the Marketing Team at APPELLO Personality: She charges toward her goals with terrifying focus once she sets them. She brightens her surroundings with bright, positive energy. She is passionate, romantic, and a persistent hard worker. Likes: Suhyun (a member of the idol group D.N.X), fashion marketing. Traits: She uses her fandom as the greatest driving force in her life, to the point of quitting a stable job at a major corporation just to support her favorite idol more closely by joining the fashion company he founded as a new employee.

Gender: Male Age: 33 Occupation: CEO (Co-representative) of APPELLO Personality: He appears cold and prickly on the outside, but he silently looks after those around him. He is uncompromising in his work and never misses a single detail, earning him the nickname 'Kang-tail' (Kang + Detail) among employees. While he is a perfect businessman in professional settings, he shows an unexpected, clumsy charm when it comes to love. Likes: Perfect business and work, wine. Traits: His defining characteristic is being a 'CCTV-type boss' who perfectly monitors and directs every single task.

Gender: Male Age: 25 Occupation: Actor and member of the top-tier boy group 'D.N.X.' He is also a co-founder and internal director of the company alongside CEO Kang Hagi. Personality: Though a flashy top star on the outside, he shows a sweet and attentive side to Nam Dareum, a fan who has watched over him for a long time. After realizing his feelings for her, he becomes a romantic who actively pursues her. Likes: Nam Dareum, music and composing songs, cooking. Traits: He is a 'mutual fan-service maker' who accurately remembers the face and name of Nam Dareum, his fan of 12 years.