S1.E1 ∙ Conspiracy

A magical academy is located on a floating island in the sky and the students of one of the academy's classes, in order to not fail the semester, must win a competition by showing off their magic skills.

The main character is a detective named Kuro Daijuji. His normal everyday concerns consist of somehow managing to pay the rent for his apartment and affording to eat meals. The meals are taken care of by his good friend Laika from the neighborhood orphanage, but Kuro has a harder time keeping his electricity and water connection coming (which finally runs out when he gets back from his latest free-loader meal at Laika's orphanage). However, it seems as though Kuro's luck has finally changed when the young president of Hadou Enterprises, Ruri Hadou, offers him a job to find a Grimoire to power Hadou's trump card against the terrorist organization Black Lodge: Demonbane. Despite personal objections to looking for the Grimoire, Kuro takes the job in exchange for a hefty fee offered by Ruri. Instead, the number of Kuro's problems increases when he saves Al Azif, the human form of the Grimoire Necronomicon from the clutches of Doctor West of Black Lodge. In the battle, Kuro and Al fall into the depths of Arkham City where they find Demonbane....

1976, Northern Italy. In July 10, an incident in the "ICMESA" implant provokes a chemical fallout over the town of Seveso, not far from Milan. A massive cloud of dioxin comes out from a damaged reactor, falling down on the earth and causing one of the most terrible ecological disasters in history. For days, the "La Roche" corporation which owns the factory tries to minimize the incident, so that Seveso's inhabitants persist to stay in their houses, exposed to the dioxin's deadly effects.

This story revolves around a spirited, carefree boy named Harukaze Kazuma, who lives with his little sister Sakura and his horse Lovely on a farm within sight of Mt. Fuji. One day, a "meteor" lands nearby, and it turns out to be Hinkle - a messenger from planet Muzanda who has come to warn Earth of a grave danger - and a robot horse named Roboni.

The new OVA will feature the prequel short story "Snow Globe," which debuted as part of a light novel volume that bundled with a limited-edition version of the original PC game.

Follows the drama of particular Hibakusha survivors. A loose adaptation of the manga of the same name, by Nakazawa Keiji.