Moka Akashiya (赤夜 萌香)is a fictional character in the Japanese anime and manga series, Rosario + Vampire. The female protagonist, she is a sweet and kind-hearted vampire, and the first to befriend Tsukune Aono, the human, male protagonist, who is somehow accepted into a school of monsters, and despite the danger it entails for him, he remains on campus, with one of his motivations for staying being Moka.

Source: Wikipedia