Bible Black Only explores the sexual misadventures of the supporting cast from the main Bible Black series. Miss Takashiro reminisces on her demonic capture, Itoh reveals her sadistic side, and Saeki is stalked by her classmates. Bible Black Only is a series of stand-alone episodes that do not affect the continuity of the main Bible Black series, and it contains footage that was previously only available on the R2 Bible Black Perfect Collection DVD.

Several years have passed since the Walpugis Night incident and several bizarre serial murder cases have occured in the metropolitan area. Dead bodies of couples are discovered murdered during sexual intercourse. The women didn’t have any external injuries, but the men were completely burned and carbonized except one part… their genitals. To solve these bizarre incidents, a special detective team called “Tokken” is deployed. Included amongst the members of Tokken is Imari who had experienced the events of Walpugis Night. While investigating the incident, they found a mysterious phrase, “Spear of Longinus,” and a strange cult group that is related to the incidents.

The King of Hell had held Odin, the ruler of Norse gods, captured in the Land of the Dead with the help of Loki, the Trickster. The Valkyries failed to save him and ended up becoming sex slaves to the demons. As a trade to free himself, Odin had the river source to the World Tree sealed, which will destroy the whole world. But before that, Loki had Freya, Chief of Valkyries, captured to counter Odin’s plot. In order to prevent the World Tree to fall, Loki have to find 2 keys which are protected by 2 invincible Valkyries—Sigurd & Suvia. And Loki turned his lustful attention on Suvia who was a Princess of Prishintia.

It is about a female doctor who is creating sex pills. There are two kinds, one pill for male sexual enhancement and one for female sexual enhancement. She plans on testing these pills on herself and four of nurses in her section. There is a catch, the pills can have strange side effects which can deform the body for more sexual pleasure.

A war is being fought between the goddesses of dark and light. While the former try to steal the jewels from innocent women, leaving lifeless husks, the latter hunt the evildoers. Both types of goddesses are equipped with powers to fight, but their strongest weapons are their retractable penises—flooding the enemy with pleasure is the only sure-fire way to win.

Kyle, the protagonist of this story, is one of the 7 heroes who defeated the evil overlord. After that battle he starts a conquest of the continent in order to unite the humans who live on it. Standing against Kyle is only his younger brother Syll, who is also one of the seven heroes. Kyle stole his throne, but failed to kill him. One day, another of the 7 heroes appears before Kyle. She is Nina, an elven princess. Kyle knows that Nina and Syll are lovers, and a dark desire begins to burn inside of him…

Every school has secrets, but few leave a stain that won’t wash out. In a certain school, there was once a fun club centered around magic but had turned into murder and a lust for power. Sealed and willfully forgotten, the resulting evil of that day remained chained in the school’s basement. Twelve years later, high school student Taki Minase, while inspecting the place where the incident took place, uncloaks the secret plastered in blood—a book of magic called “Black Bible.” Trying his luck with its love curses, he soon finds out the magic proves real and easily penetrates the hearts and bodies of his fellow classmates. The resulting intercourse leaves the student body very vocal, and Minase’s acts do not go unnoticed. What was at first a simple stroke of curiosity becomes much larger and harder to control. Fully swallowed by the unshackled darkness, everyone he knows becomes a victim, including his childhood friend Kurumi Imari. Torn apart, Minase finally realizes his mistakes and that he must reverse them in time if he ever hopes for him and Imari to come together.

The protagonist (interpreted by the spectators in a subjective view) shows up at the Palace of the Mystic Courtesans to savor strong pleasures, choosing from a wide variety of courtesans of various species. The protagonist will be guided by Marina of the receptionist to find the right courtesans who can satisfy him.