Rei Heller, a 28-year-old human, with a muscular figure long black hair, piercing purple eyes, and a tattoo of a phoenix. Being a young shrine maiden, she devoted her youth to purifying spirits. She fell in love with a scientist and had a son. unfortunately her husband and child were killed in a Blackwatch raid. Infected with the blacklight virus, she gained unprecedented power and immortality. fueled by rage she is driven herself to bring down Hotaru Mercer and dismantle the Blackwatch Clan.