Nora

The vampire who bit Okazaki and turned him into a vampire. She was originally a housewife as a human. One day, she was chosen by her villagers as a sacrifice to the vampire living in a cave near their village. She somehow survived the vampire's blood sucking and became a vampire herself. She didn't kill Okazaki after bit him because his look reminds her of her husband. When she was about to move to a new place with Okazaki, she was caught together with Okazaki by the experiment organization, which later cut her into pieces with only a sound-and-safe brain retaining her consciousness. When Okazaki was saved, her brain was saved alongside. After a long time being taken care of by Okazaki, her brain finally grows back into a whole body, after which she lives with Okazaki.