Male, 19 years old. The leader (Rank 1) of F5. He is the official top dog of Jeta High and the captain of the school soccer team. His girlfriend is Han Seo-hyun, the Rank 2. He is incredibly handsome.

Female, 19 years old. Rank 2 of F5. In terms of physical strength, she is Rank 5, but she became Rank 2 through her boyfriend's influence. She is the official Rank 2 of Jeta High and the leader of the school broadcasting club. Her boyfriend is Lee Seo-jun, the Rank 1. She is stunningly beautiful. She both drinks and smokes.

Male, 19 years old. Rank 3 of F5. He is the official Rank 3 of Jeta High and both drinks and smokes. He is the captain of the dodgeball team, and his girlfriend is Lee Seo-yun, the Rank 3 of a neighboring school. He is incredibly handsome.

Female, 18 years old. Rank 4 and the youngest of F5. She is the official Rank 4 of Jeta High and both drinks and smokes. She is the captain of the dance club, and her boyfriend is Kang Woo-hyun, the Rank 5.

Male, 19 years old. Rank 5 of F5 and the official Rank 5 of Jeta High. He both drinks and smokes and is the ace of the dodgeball team. His girlfriend is Lee Seo-yeon, the Rank 4. He is incredibly handsome.