a Japanese animated television series produced by Gonzo studios and broadcast in Japan on TV Asahi since October 3, 2006. The plot revolves around four girls who become involved in a series of supernatural murders happening throughout the vicinity of a fictional depiction of New York City. It combines elements from typical American movie productions like horror, drama, mystery and musicals. An OVA sequel called Dead Girls was released in Japan, on August 8, 2007.Kate, Rachel, Rose, and Claire are all students at a private school set on Roosevelt Island, New York City. Waking up one morning, all feel uneasy and restless as they deem strange that none of them can recall anything about the previous night. Their anxiety escalates when the school announces that Lise, another classmate of theirs and friend to all four girls, is found dead.The following night the four girls are drawn by butterflies that lead them all to the same place. There, they are approached by a woman called Lula and her partner JC who tell them that they are dead, and must work for them. They are revealed to be working for an organization called Animus. On certain nights the girls are summoned to fight "monsters" that look almost like regular people, and can do this by using superhuman abilities. After a fight the girls are drained and tired. If they fail, they will die for real, like other girls who work for Animus. Later Lulu explains the girls were reanimated in new, special bodies and their real bodies are in her custody. What's more, when Lise had originally disappeared, the girls had gone looking for her, and right after they found her dead body was when they were killed. Lise was also supposed to have been reanimated, but the "monsters" prevented this. Lula further claims she has the means to eventually return the girls to their previous lives when their job is done.

The four girls are involved in a centuries-old battle between the Animus and the Dolore clans. Long ago one of a pair of a Boo