Once Upon A Time~,
There was a prince who parents have died if a past attack on the kingdom. And that prince is Kim Jonghyun. He lives with his uncle, King Lee Jinki, and his cousin Prince Taemin. King Onew(Jinki) is ruling both kingdom until the young orphan prince can rule it on his own. But at the moment Jonghyun coudn't care less. He has a wonderful life. He has everything a guy could want. Girls that go crazy for him, and most importantly, his boyfriend, Kim Kibum. Today is Jonghyun's 16th birthday. The day where he will learn to rule his kingdom...

Kim Jonghyun 

Prince of the Kim Kingdom

Lee Taemin

Prince of the Lee Kingdom
 

Kim Kibum(Key)

Private Maid of Prince Taemin

Choi Minho

General of the Kim Kingdom's Army

Lee Jinki(Onew)

King of the Lee Kingdom

Chicken

Onew's love/wife :D