The brother of Yumi (born one year apart), he loves her very much and tries to help her in everything he can. He has good relations with the students of Lillian and is somewhat popular. At the beginning of the series, he did not empathize with Suguru, but Suguru invites Yuuki to stay over for new year's in his house; subsequently Suguru begins to perturb Yuuki by giving him the nickname "Yukichi". Yuuki becomes the president of the Student Council of Hanadera due to his neutral personality. (Source: Wikipedia)
Ayaka Nikaido is the scheming president of the Second Newspaper Club. She considers the Student Council president, Kaori Shirakawa, her nemesis. She tries to expose Kaori's corruption with the help of her club members but this merely results in her getting on Kaori's bad side and repeatedly getting her club into trouble. It is Ayaka who pushes Yuuki Akamatsu into joining the Second Newspaper Club as a way of improving his social situation.
The lead character of the series. She is a bubbly girl who has magical powers which she uses only in secret. That is because she is forbidden by her parents to use it. It is only when her cooking teacher Washu discovered her magical powers that they are to be of use. Except for the absence of freckles and the triangular mark on her forehead, she looks similar to her metaseries counterpart.
Anju is Karin's younger sister and she absolutely loves her, close to the point of obsession. She will do anything for Karin. She has not quite awakened as a vampire, causing her to be somewhat sensitive to the sun, and resulting in her only attending school on overcast days. However, she does have an amazing control over bats despite this. Anju is very reserved, speaking in a quiet manner and wears a Gothic Lolita attire. Boogie-kun is her companion, whom she carries around and is her favorite of her dolls, something she enjoys collecting. In the anime, Anju's blood preference is jealousy when she awakens. In the manga, it's loneliness.