The story takes place on a world 100 years in the future, a few years before Lisa and Lorna joined eX-D organization. The world where people drives computer-controlled electrically powered AI cars which automatically take you where you want to go. However, one AI car mysteriously start to run amok. Now Nina and Rei, as the main driver for ex-D organization have to solve the mystery behind the AI car with evil plot and trap awaiting for them... (Source: AniDB)

The year is 2148. Two years after the end of the original Fafner in the Azure TV series, Tatsumiya Island and its surviving residents have returned to some semblance of recovery. However, things have become desperate for our hero, Kazuki; nearly blind now, and partially crippled from his battles with the Festum two years earlier, he clings to the promise his fallen friend Soushi made to him to return to the island and set things right again. Kazuki's hopes flare when a lifeform is detected within an unmanned submarine that comes floating into Tatsumiya Bay one night, but the person aboard isn't Soushi; it is a mysterious boy named Misao Kurusu who may not be entirely human, and who claims to have been sent by Sōshi. With Misao's arrival, hostilities break out anew between the Human Army and the Festum, and the Fafner pilots are thrown into the most desperate battle of their lives - this time, with the fate of TWO races riding on their shoulders. (Source: Wikipedia)

Once upon a time, fairies were tools of war. The story takes place in a world where fairies possess and dwell in animals, giving them mysterious abilities. By removing the organs of a possessed animal and transplanting them into humans, fairies can be summoned as an alter ego and be used as a weapon. Such individuals who used fairies as war tools were called Fairy Soldiers. Once the war was over and they completed their roles, the soldiers lost their purpose. Some began working for the government, some joined the mafia, and some even became terrorists, as each chose their own way to live. Nine years have passed since the war. The protagonist Mariya is a new recruit of Dorothea, an organization which investigates and suppresses fairy-related crimes. Amidst the unstable political situation, criminals with lingering wounds from the war and past conflicts emerge and engage in terrorism as an act of revenge. This is the story of Fairy Soldiers, fighting for their own justice in a chaotic postwar world. (Source: MAL News)

Second season of Fairy Gone.