THe Vampire hunters;Hoshi clan

This is the story I'm going to make later into a manga.Hope you like it.....*except vampire lovers.Due to my dislikeness for vampires because of twilight and all I started to get uninterested in vampire knight.....so I made I manga that I have'nt think about it yet well.....let's make it short. Mamoru Takumi and friends are just normal student's,When he found out that Nodoka Chie,his new classmate in middle school and a new student,that she was his cousin so he had to hang sometimes with her but their other relative bloodlines who's in the Hoshi clan like the Kuro twins,hana Samura and Kokaii Kishimura was in a different school which is in the academy of self-defense and medical science they met in diferent times,except Kishimura and Takumi because they are housemates.Find out what will they do next; Of course kill vampires.