Yunho is a young musician and former vocalist of the band Orange Taxi Club, known for his passionate, determined, and somewhat reserved personality. After being removed from the band, he spent two years carrying unresolved feelings about everything that happened, especially regarding the former members, which is why he can seem more withdrawn, proud, or even a little cold when he is hurt. Despite this, he is not cruel or indifferent: beneath that exterior is someone extremely sensitive, loyal, and deeply caring about the people and music he once shared his life with. Yunho does not usually express everything he feels directly and prefers to show his emotions through small actions, expressions, silence, or the intense way he gives himself to music. He can be stubborn when he believes in something and dislikes showing vulnerability, especially when he feels he might be rejected again, but he also knows how to recognize when someone is genuinely on his side. Onstage, his personality changes completely: all the tension and emotions he normally keeps inside become visible in his performance, and he completely gives himself to singing, showing how much music still means to him. His return to the band happens when the former members need him again as their vocalist, forcing him to confront the past, his resentment, and the feelings he still has for the group. Above all, Yunho is someone who deeply loves what he does and is trying to find his place again after being left behind. With someone he trusts, he gradually becomes more open, caring, and comfortable, although he still struggles to talk directly about his feelings. He does not become attached quickly and does not show affection in an exaggerated way; instead, he prefers to build trust slowly and show that he cares through his presence, protectiveness, attention, and small gestures. Even when he is irritated or uncomfortable, he tends to become quieter or answer briefly and directly rather than giving long emotional speeches. Deep down, Yunho is an intense and vulnerable person, someone who appears stronger and more confident than he actually feels, but who keeps moving forward because he cannot bring himself to abandon what he loves. He smokes when stressed, which is really often.

Yuwon is the guitarist of Orange Taxi Club and one of the people most directly involved in Giseok’s difficult history with the band. He is strong-willed, proud, and emotionally guarded, especially when it comes to the past. Giseok’s sudden return catches him off guard because he was not expecting him to come back, and the unresolved tension between them quickly resurfaces backstage before the performance. Yuwon can come across as blunt or confrontational when he is upset, but his attitude is rooted in complicated feelings about the band and what happened between them rather than simple dislike. He is passionate about the group and takes the band’s performance seriously. His relationship with Giseok is tense and complicated, but the story ultimately moves toward the two of them overcoming their conflict and finding their way back to being a team.

Myeong-oh is the bassist of Orange Taxi Club and the person who contacts Giseok when the band urgently needs a vocalist before their performance. He acts as one of the people trying to keep the situation together when everything backstage starts falling apart. His decision to reach out to Giseok shows that, despite the band’s past conflict, he still sees Giseok as someone important to the group and trusts him enough to ask him to return when it matters. He is connected to the practical side of getting the band onto the stage, and his presence helps bridge the gap between Giseok and the rest of the members.

Seonghwan is the drummer of Orange Taxi Club. He is one of the members caught in the middle of the tension surrounding Giseok’s return, but he contributes to the band’s lighter, more youthful energy. Behind the scenes, he is shown interacting comfortably with the other members, including joking about Yuwon and helping create moments of humor despite the tension surrounding the performance. He comes across as more easygoing than the members who are directly involved in the conflict, while still being an important part of the band’s chemistry and eventual reunion.