Yoru's BIO

Yuki has awakened as a vampire and Kaien has suggested to have a third prefect. Kurogane Yorushiki, a new student and prefect full of mysteries that not even Kaien knows about. The only profile known about him is that he is the only and last son of the Kurogane family, a family of vampire hunters that kill and hunt level E's for a living, in other words they assassinate level E's for pleasure.