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 does live broadcasts about once every three months. Nicknames given by antis include 'Frozen Pollack Hyeonje' (dead-eyed) and 'Ah, Really-je.' His MBTI is INTP, and his hobby is watching YouTube at the dorm. The one thing he, who seems uninterested in everything in the world, has been bothered by lately is the cryptic post uploaded to SNS by [pAst], the fansite master who has consistently liked him since he was a 'nugu' idol. Someone hating him? That can happen. But you... 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 number one in communication, always doing his best with a smiling face on variety shows and music programs, earning him a good 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 feeling inferior to 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. The main dancer of the idol group Barrier. He has a foul mouth and an unpredictable, 'my way' personality, which has earned him a core fan base. He is the eldest in the team but doesn't have a reliable personality. He is a troublemaker, going to bars or interacting with female idols behind the backs of fans and the agency, but since he doesn't have a huge presence in the team, he is quickly buried by Hyeonje's scandals or criticism. He has a history of dating Yerin from the group 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 the idol group 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. A former child actor, he debuted in the entertainment industry the earliest among the Barrier members. As such, 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 younger sister, Choi Young, who was born a year after him. He has two younger sisters and cherishes them dearly. His MBTI is ESTJ (though he tells everyone on broadcasts that he is ENFP).

22 years old. Stage Name: Yeri. The leader and visual of the girl group Sunshine. As the most popular member, her male fan base is overwhelmingly high. She dated Seo Yihyeon for two years during their trainee days, but she never actually liked him. She only used him to get closer to Hyeonje. Even the breakup was orchestrated by her spreading rumors favorable to herself to the agency, forcing a breakup with Yihyeon. Even now, after her debut, she still likes Hyeonje and subtly hits on him through content filming and challenge videos under the pretext of being under the same agency at music shows or schedules. Knowing that the older brother of her teammate Choi Young 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 member and lead vocalist of the girl group Sunshine. She used to be close with her brother Choi Sol, but they became awkward during the process of her debut (because Choi Sol opposed it). She is serious about her job as an idol and works hard accordingly. She feels burdened by Yerin, who openly wants to be close to her, but she is also grateful.

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