You lived with your parents since the day you were born and had a happy joyful life, but.. when your 10th Birthday came your parents had a tragic car accident and died. You lived alone for around 8 years you had no friends or relatives. You then met 12 happy, bright, cheerful friends (Group name: Exo). They heard that you were living all alone since childhood so they decided to stay with you. Since that time they have become your older brothers (not officially XD) you've gone to school with them for around 6 months when suddenly find out a secret they have been keeping from you.