You are a female vampire and the 7 of them are also a male vampires but you are from different clans, and their names are: Heeseung, Jay, Jake, Sunghoon, Sunoo, Jungwon, Ni-ki. 
They are from the dark blood clan. And you are from Enchancia clan (the The rarest).

Some time ago Sunoo, he was hurt by an evil female vampire who disguised herself as you until Sunoo almost died from blood loss, And this makes his 6 friends have a grudge against you even though you weren't the perpetrator.