Mari Setogaya is a character from the anime called "Itadaki! Seieki". she's used to feed on sweat and spit but when she met Kanzaki it changed and she's now feeding on his 'seed' as her primary source to get life energy. She's half vampire and half succubus girl whom is able to change her personality as well as her physical appearance to suit the needs of her partner. her hair and eyes is color red. Even tho she's a vampire she's not used to the taste of blood.