If you want to become a Blood Demon and earn rights that other members cannot have just give atleast a chapter of your fanfic/story by posting it. The director (Kamicolo) will choose to approve your story. If he does approve you then you will become a Blood Demon.
Dont be shy we wont judge your works everyone has their unique kind of way of writing.
Steps:
1) go to R+V forum
2) click new topic
3) put your username and depending what number was the last persons
Like kamicolo(CABRIDGE) fanfic #3
4)wait for approval