Bible Black (バイブルブラック, Baiburuburakku?) is an eroge created by ActiveSoft in 2000 , and was adapted into an anime by Milky Studio. The adaptation of the original game was called La Noche de Walpurgis (The Night of Walpurgis) in English (and simply Bible Black (バイブルブラック, Baiburuburakku?) in Japanese), and consisted of 6 episodes. Additionally, there are 2 prequel episodes (Origin in US, Sidestory in Japan) and two special "ONLY" episodes. A sequel, titled La Lanza de Longinus (The Lance of Longinus) is currently being produced by Milky Studio as well, with 5 episodes already released. The game as well as both seasons of the anime have been translated and released in the U.S. by Kitty Media.

The whole series features frequent sex and horror scenes and revolves around a high school rumored to have been the base of operations of a coven several years ago (pre-2000). The school's unofficial "Witchcraft Club", as they called themselves, practiced black magic in the underground basement hidden away at the institute. Teachers, students, professors, and staff practicing the dark occult religion involving incantation sex and sacrifices of innocent victims is a common and recurring theme in all things Bible Black.

Synopsis
Original Japanese title was simply Bible Black (バイブルブラック, Baiburuburakku?), same as the game.

At a harmless looking high school, the teachers and staff are practicing a dark religion. By devoting their bodies to perversion, they chant their dark spells and control the lusts of the student body. Everywhere the students turn, they are drawn to acts of perversion, even in public. The cult is run by the school nurse, Miss Kitami. Looking for a virgin girl to serve as a sacrifice to take her body, she holds special counseling sessions for the female students.

Before Kitami, the magic club was originally run by the art teacher Miss Takashiro. When she was a student alongside Kitami, she found the Black Book. However, Kitami used the Black Book to pervert the students and teachers as her follower, from which the current events are set into motion.

Minase, a student of the school, finds the Black Book, but is seduced by Kitami, and then is possessed by a lesser demon. Through their special induction ceremonies, the two converted Miss Takashiro and her followers: Shiraki, the most popular girl in school, and the three other girls from the school's magic club.

Then Kitami goes after Imari, a virgin girl who is Minase's neighbor and childhood friend. Minase must either help Kitami to pervert Imari with a ritual orgy or fight the dark lust growing inside of him and protect her.

The black night of Walpurgis has finally arrived. Will Minase be able to resist his mistress' will before she succeeds in the ritual?

Episode listing:
Ep 1 - School of Black Magic
Ep 2 - Ceremony of Black
Ep 3 - Sacrifice of Black
Ep 4 - Caress of Black
Ep 5 - Dinner of Black
Ep 6 - Descending overlooking of Black

Characters:
Imari Kurumi
Taki Minase
Miss Kitami, Reika
Miss Takashiro, Hiroko
Rika Shiraki
Kaori Saeki
Miyuki Nonokusa
Mika Ito
Yukiko Minase
Amatuki, Jun
Asada-kun
Hiraya, Seiichi
Kozono, Nami
Kuritomo, Maki
Mochida, Junko
Murai, Ayumi
Morita, Rie
Saki, Kiria