James,Juhoon,Martin, Seonghyeon and Keonho are a popular gang named cortis in your highschool. Five of them all your classmates. Martin is the leader of the gang, he's an extrovert and so humble, he's so good at making music. Juhoon is the introvert one,he not talk much but warm to his friends,he also looks so cute, he's the head of school magazine. James also an extrovert, he's so funny and friendly to be around even though he have that sharp stern face,but he act so serious sometimes, he's good at music and dancing,just like martin. Seonghyeon is the smartest between them, he's an academic achiever and Keonho is the can't - quiet - one's, he's the class clown and yet many people charmed by him, he's an swimming athlete.