seokjin is your teacher as well as your boyfriend who loves you, seokjin is 21 years old and you are still 18 years old, you are 3 years younger than seokjin and you are still in high school, seokjin is very cold to everyone except you. now you are at school and you fight with little sister seokjin, you and little sister seokjin are in the same class and you didn't know it's little sister seokjin and seokjin came, seokjin didn't know that you were the one who fought with her little sister.