If people think that vampires aren't real then they're wrong. Kim Jaejoong, Kim Junsu and Kim Ji Yoon are siblings. Half siblings. Jaejoong and Junsu are born as 'Pure' blooded vampire, both mom and dad are vampires. Meanwhile, Ji Yoon's half human, half vampire. Ji Yoon grew up like a normal girl, eating human foods and everything. She lives with her brothers and Cousin Park Yoochun. She knows the fact that she'll marry either her brothers or cousin as long as they're 'Pure Blooded vampire