The first adaptation, simply titled Bible Black, consisted of six episodes covering numerous scenes from the video game.
The game takes place in an academy rumored to have been the base of operations for a coven, twelve years prior to the premiere installment.
He begins practicing black magic, which has extreme sexual effects that benefit him and his friends, until evil comes forth from the dark craft.
Eventually, the origins of the book are revealed, as is the incident on Walpurgis Night twelve years prior, when the evil force was at its strongest.
An academy student, Taki Minase, finds a strange book, the Bible Black, while exploring an abandoned room in the school's basement.
Twelve years prior on Walpurgis Night, Kitami was used as a sacrifice for the previous Witchcraft Club and only survived after making a deal with Satan, becoming a futanari in the process.
Kaori Saeki, the head of the new Witchcraft Club, also notes Minase's magic acts and persuades him to come to one of her meetings with the book.
After being seduced by Kitami and possessed by a lesser demon, Minase brings her with him and she rapes Saeki into submission, taking over the Witchcraft Club.
Some time later, Saeki is seen in the Witchcraft Club sanctuary, planning to steal the Bible Black, which was going to be left there before the entrance was sealed.
Imari enters the room and destroys the Bible Black with a fire spell, then reveals herself as a futanari, showing that Kitami's ritual was successful.
The series was also involved in a bit of minor controversy when it was aired as a "midnight movie" at a time when other anime films were being played on Canadian youth station Teletoon, supposedly as an accident of nobody checking what was screened.
Set about twelve years before the events of the original OVA, Hiroko Takashiro and Reika Kitami are now students at the school, and several new characters are also introduced.
The first episode opens with two female students, Nami Kozono and her lover Junko Mochida, having sex in a classroom after school.
The next day, the school receives a new transfer student, Reika Kitami, a beautiful but naive girl; meanwhile, Rie finds the titular Bible Black in an antique store and shares it with Hiroko and Saki.
Hiroko and her friends begin to translate the Franco-Latin-Hebraic text of the Bible Black, and plan to get revenge on Nami for forbidding them to start a Witchcraft club.
As a test run, they cast a simple spell on Nami's lover, Junko, which is said to make a young woman "dance naked".
Their spell proves successful when the next day Junko becomes aroused while giving a speech for an assembly, causing her to strip down and masturbate in front of the whole school.
With Walpurgis Night fast approaching, Nami takes advantage of Hiroko's absence and makes herself the leader of Rose Cross.
Nami gives the thugs permission to gang-rape Reika while she and the group prepare for the ritual, so long as they only engage in anal intercourse with her, thus keeping her virginity intact.
She fails to convince them, however, and is forcibly ousted by Nami and the rest of the group, and is placed by Rie and Saki in a closet until the ritual ends.
Nami, now delirious and hellbent on getting revenge on the group, goes on a murderous rampage and slaughters the other members, including Hiroko's friends, until the Gates finally begin to open.
Moments later, Hiroko, having managed to free herself, hurries down to the basement, only to find that the ritual had ended, and that the members of Rose Cross (Nami, Rie, and Saki included) have all been savagely slaughtered.
The series ends with a visibly disturbed Reika, naked and bloodied from head to toe, roaming the town at dawn, looking blissfully towards the sky.
The scene fades out with a shot of her still walking through the town, on her way to becoming the woman that Kurumi Imari and Taki Minase would meet twelve years later.
When Jody seems to emerge triumphant, the Lance of Longinus reappears out of Aki, and reanimates the original grimoire, the Bible Black.