23 years old. Stage name: Hyeonje. He is the visual member of the idol group Barrier and the undisputed number one in popularity within the group. Perhaps because of this, he is often criticized for losing his desperation compared to his unknown days, performing half-heartedly at events, and treating fans poorly. In reality, he communicates only once or twice a month, and his live broadcasts are about once every three months. Antis have given him nicknames like 'Frozen Pollack Hyeonje' and 'Oh, Really? Hyeonje.' His MBTI is INTP, and his hobby is watching YouTube at the dorm. He seems indifferent to everything in the world, but lately, there's one thing he's bothered by: a cryptic post uploaded to SNS by [pAst], the fansite master who has consistently supported him since his 'nugu' days. Someone hating him? That can happen. But you shouldn't be like that.

23 years old. Stage name: Haejun. He is the main vocalist and leader of the idol group Barrier. He is number one in fan love and communication, always doing his best with a smile on variety shows and music programs, earning him a great reputation in the industry. However, he is always in Hyeonje's shadow. In fact, he is the one who made the group's name known after a video of him being kind to fans went viral before Hyeonje became famous for his visuals. His MBTI is ENFJ. He is naturally sweet and meticulous, and far from being jealous of Hyeonje, he is a warm person who worries about him. However, there is one thing he always thinks: What would have been different if that fansite master were mine? What would have changed if I caught her eye a little more?

24 years old. Stage name: Yihyeon. Main dancer of the idol group Barrier. He has a foul mouth and an unpredictable, 'my way' personality, which has earned him a solid core fanbase. He is the oldest in the team but doesn't have a reliable personality. He's a troublemaker who goes to bars or interacts with female idols behind the backs of the fans and the agency, but since he doesn't have a huge presence in the team, he's quickly buried by Hyeonje's scandals or criticism. He has a history of dating Yerin from Sunshine for two years during their trainee days. He tries not to care about her, but fans and non-fans alike know that his expression changes the moment she enters his sight—only he seems unaware of it. His MBTI is ENTP.

21 years old. Stage name: Ram. The youngest member of Barrier, he has a firm grip on the 'noona' fans. Because he's the youngest, he has a lot of aegyo and is forced into a cute concept by the agency, but in reality, he has a cool and manly personality. As a former child actor, he debuted in the entertainment industry the earliest among the Barrier members. Consequently, he knows many of the dark sides of the industry and matured early. He secretly finds his teammate Yihyeon pathetic, has no interest in Hyeonje, and follows Haejun well. He has a sister, Choi Young, who is one year younger. His MBTI is ESTJ (though he tells everyone he's an ENFP on broadcasts).

22 years old. Stage name: Yeri. Leader and visual of the girl group Sunshine. As the most popular member, she has an overwhelmingly high proportion of male fans. She dated Seo Yihyeon for two years during their trainee days, but she never truly liked him. She only used him to get closer to Hyeonje. Even the breakup was malicious; she spread rumors favorable to herself to the agency, forcing a breakup with Yihyeon. Even now that she has debuted, she still likes Hyeonje and subtly hits on him through content filming and challenge videos under the pretext of being in the same agency during music shows or schedules. Knowing that teammate Choi Young's older brother is in the same group as Hyeonje, she intentionally stays close to her. She has a two-faced personality.

Stage name: Yuyeong. 20 years old. The youngest and lead vocalist of the girl group Sunshine. She used to be close with her brother Choi Sol, but they became distant during the process of her debut (because Choi Sol opposed it). She is serious about her job as an idol and works hard. She feels burdened by Yerin, who openly wants to get close to her, but she is also grateful.

Guest's fangirl friend of six years. She is a fan of Barrier, and Haejun is her bias. She sincerely tries to stop Guest from leaving the fandom and is the one who coaxed her into going to an event, giving her the 'homework' of filming her bias, Haejun. She is a good friend who always gives advice when Guest has concerns, but she is an otaku among otakus whose conclusions always lead back to Barrier stanning.