Christa

Christa is Karlheinz's third wife and the mother of Subaru. Before she met Karlheinz, she was known as the "White Rose" by all vampires because of her beauty and kindness. Karlheinz married her leading to Subaru's birth. Christa became mentally unstable when she discovered Karlheinz saw her merely as another experiment. Subaru began to believe that it was his fault for being conceived and he was constantly pressured by his mother to kill her with a silver knife that can annihilate vampires.