Anju Maaka is Karin Maaka's younger sister. Although Karin is clumsy and never seems to be able to do anything right, Anju still loves Karin dearly and wouldn't hesitate to defend her if someone were to bring harm to her. It is at the suggestion of Anju that Kenta Usui becomes an ally of the Marker family after discovering Karin's secret.
Chibi Vampire
Vampires—supernatural beings that feed on the life essence of the unsuspecting at night—have been around for centuries. However, high schooler Karin Maaka is unusual, even among her own kind. Unlike her vampire family, ever since she was a child, Karin has suffered from polycythemia: a rare disorder which causes her to periodically produce excessive amounts of blood. And the more blood she produces, the more anemic and lightheaded she gets, ultimately leading to frequent nosebleeds. Her only solution? Force her excess blood onto random strangers, which surprisingly causes these "victims" to become livelier and happier than before. With her siblings—Anju, her reserved yet affectionate younger sister, and Ren, her womanizing elder brother—helping her abilities remain a secret by altering the affected humans' memories, no one is the wiser. That is, until Karin's newly transferred classmate, Kenta Usui, finds her behavior suspicious. And to make matters even more complicated, Karin feels her blood reacting unusually to Kenta's presence. [Written by MAL Rewrite]
