You/Haebin's side of the story

You were 6 when your parents died so you had to move to your grandma's house but when you reached to age 15 your grandma had an heart attack and died so you worked at a cafe for months to be able to buy a house then finally you reached the part that you can pay for an house and you continued to work

Exo's side of the story

Exo has been studing earth for 135 years and after a 100 years they finally found their destined one to help them protect earth from the super juniors.