Kibum grew up happily with his family. No issues, no nothing. 
The only thing that was wrong with the way he grew up was the mere
fact that he was sheltered. This made him very naive and gullible. He 
works as a school teacher and a very smart one. He may be gullible 
land naive but he isn't dumb. ​Kibum is a very timid, shy kind of guy. 
He doesn't like to ask for anything and is very independent.