Kim Kibum. Age: 120 years old. Occupation: Kim Jonghyun's Guardian Angel.
Key was Jonghyun's guardian angel.
Minho was Taemin's guardian angel.
It was against the rules for an angel to interact physically with the person they protect.
But the world that Jonghyun and Taemin lives in forces Key and Minho to form a human form.
And when they meet, their life begins.
(pretty fancy there, the way i wrote it xD HAHA. Comment if you don't understand it. ^^)
(AH! I forgot to involve ONEW! .... well, he will be somewhere in the story eating chicken, so no worries :D)