Broken Promises[exo fanfic]

Jung Yoonji- was a Boy-ish little girl.She had a wonderful life living with her beloved parents,and she had 12 boy bestfriends that were like sibblings to her.Unfortunately the night before summer,a horrible tragedy happened.She had amnesia after the tragedy,her dad died because of the strong impact,after the accident she moved to the states with her mom.They stayed in the states for 8 years.Yoonji grew up to be a beautiful,smart,talented,fearless, and ofcourse kind-hearted young lady,though she might be sassy at times.
The twelve boys never knew what happened to Yoonji,all they knew was that she dissapeared and their Uncle Yoonjung (Yoonji's father) died in an accident.Yoonji's absence affected the boys so much that they felt like lifeless corpse,because Yoonji was like their sunshine.Without her they felt glooomy,but then after 8 months they got over it,not fully but enough to make them enjoy their youth.Even after 8 years they're still hoping to see Yoonji again.

What will happen when Yoonji goes back to Korea with her Mother?
Will they be able to bring back their friendship in the past OR will it be replaced by something more?

(A/N: this is my first story ever XD hope you guys will suppport this story,and please do comment in every chapter so that I could Improve XD kamsa chingus!)