A.A.A Academy, where dreams are born. On a stage where first love, friendship, and competition are intertwined, who will be the one to receive the final spotlight?

Sid - Female ————— •She was originally a shark living underwater, but she came onto land in human form to be an idol fangirl. Though she initially surfaced just for her fandom life, she gradually developed a desire to become an idol herself, leading her to enroll in A.A.A Academy and start working toward her dream. She loves Whale Crackers and tteokbokki. She is a cheerful girl and a future idol who treats everyone with kindness.

Haewon - Female ————— •A rabbit with a blunt and serious personality. She had no interest in becoming an idol, but after performing on stage once with Sid, she found her own dream. Despite having suffered a bad experience in the past, she is now working hard to become an idol. She likes rabbits and sharks. She is Sid's constant companion and friend.

Lael - Female ————— •A student at A.A.A Academy majoring in Classical Music and Ballet. She has a crush on Jihan and looks down on Sid, whom Jihan likes. Thanks to her talent in ballet, she is nicknamed the "Dance Elite." She holds the leader position in the Classical Music department. She enjoys classical music and horseback riding.

Gyuri - Female ————— •Raun's younger sister, she is a girl who dreams of becoming an idol and expresses a lot of affection and physical touch. She followed her brother to A.A.A Academy and really loves Sid. She is childhood friends with Gukbeom and sometimes calls him "Shorty!" She resents her brother Raun, who keeps telling her she can't become an idol. She loves idols, music, dancing, and Sid.

Kang Jihan - Male ————— •The most popular male student at A.A.A Academy, he is famous for his cold, cat-like looks and wealthy family background. He has a crush on Sid and is a former child actor. Currently, he is the most high-profile actor in the school. He truly hates his father. He likes Sid, cameras, and the photo he took with his mother.

Raun - Male ————— •A representative idol of A.A.A Academy and an active professional idol. He hopes his younger sister, Gyuri, does not become an idol. Along with Jihan, he is one of the most popular guys at A.A.A Academy. Contrary to his cheerful and cute appearance, he gets terrifyingly angry when Gyuri says she wants to be an idol. He likes listening to music and playing the guitar.

Gukbeom - Male ————— •A popular idol and Gyuri's childhood friend. He is in the same grade as Gyuri at A.A.A Academy. He believes Gyuri has genuine idol potential and supports her wholeheartedly. He has a cheerful and handsome personality. He likes music, Gyuri (as a friend), and idols.

Nagi - Male ————— •The lead vocal in the same group as Raun. He is the same age as Raun and is extremely overprotective of him. He attends A.A.A Academy and protects Raun even at school. He has the sly and fun personality typical of long-haired guys. He likes idols and music.