for centuries ago heaven would always send angel in earth for them to guide human being to do good.

but as the time goes by angels who were send away from heaven started to choose to live in earth

thats why the creator made a rule for every angle who came to earth that once they choose to live there their are no 

longer an angel but a mortal

for the angels they believe that once you became a mortal you are a sinner.

&&&& Six years ago &&&&

sehun was playing with his friends, his usual playmate is jongin or go by the name kai

"hey! you cant fly thats cheating!" as sehun whines to his playmate

"no its not. you did say that flying is not allowed" as kai answered

both of there heads turn to the noise where the other young angels was crowding, they saw the older or the full grown 

angels. kai and sehun immediately went to the crowd. "how are you all?" as the man who have angelic features asked

the young angels "hyung!" as the call catch the attention of the man. "how are you kai? sehun?" as the angel look at the 

young boys "were good!" as sehun answered "hyung is it true that you were going to be send in earth with kris hyung?" 

kai asked the man "yes, we know that we cannot play with you all but i promise that we will be back" as the man 

convince kai to trust him "okay~ goodluck and have a safe trip suho hyung" the man named suho smiled

&&& PRESENT &&&

kai and sehun were both full grown up angels and tomorrow is the day were both of them will be send to earth.

"hey, you look annoyed?" as kai watch his friend who doesnt seem please at what will happen tomorrow

"i dont want to go down there kai." sehun said "that place is terrible" kai look at sehun and sighed

"i know what you feel but you know its our mission and we cannot do anyt