Each of the series revolves around girls who have been infected with a mysterious virus known as the A Virus. These girls are divided into two classes; Extars, who can transform into weapons when sexually aroused, and Liberators, who have the power to wield an Extar's weapon form, known as Liberator Arms, through a process known as Drive. These girls are brought to separate islands to spend their days completely isolated from the rest of the world until the islands' Observers, authorized by the government Organisation AAA, ostensibly deem them ready to rejoin society again. Mermaid follows an Extar named Mamori Tokonome who forms a partnership with the Liberator Mirei Shikishima. Bhikkhuni follows two sisters, Rinka and Ranka Kagurazaka, who are infected with a variation of the A Virus known as the V Virus.
Characters
Mermaid Island
Bhikkhuni Island
Siren
Media
Video games
Valkyrie Drive: Bhikkhuni is developed by Meteorise for the PlayStation Vita and was released in Japan on December 10, 2015. PQube released the game in Europe on September 30, 2016 and North America on October 11, 2016. The game was refused classification in Germany and Australia. Valkyrie Drive: Siren, a social game, was launched for iOS and Android devices in December 2015. It was later shut down on July 7, 2016.
Anime
Valkyrie Drive: Mermaid, the anime portion of the franchise, aired in Japan between October 10, 2015 and December 26, 2015, receiving an uncensored broadcast on AT-X. Produced by Kadokawa, Showgate, AT-X, Marvelous, Genco and Arms Corporation, the series is directed by Hiraku Kaneko, who also designed the characters. Yōsuke Kuroda handled series composition and Hiroaki Tsutsumi composed the music. The opening theme is "Overdrive" by Hitomi Harada, while the ending theme is "Super Ultra Hyper Miracle Romantic" by Yuka Iguchi and Mikako Izawa. The series is licensed for streaming in North America by Funimation, while Madman Entertainment are simulcasting the series on AnimeLab in Australia. In the UK, the series has been banned from being released due to falling foul of the Video Recording Act 1984.
Episode list
Anime Specials
Special short episodes that came with each Blu-ray/DVD volume.
Episode list
Manga
The franchise has spawned two manga series. Valkyrie Drive: Siren—Breakout, a web manga illustrated by Ayase, began serialization on Famitsu Comic Clear in November 2015. An adaptation of Valkyrie Drive: Mermaid illustrated by Yuztan began serialization in Kadokawa Shoten's Comp Ace magazine in December 2015.
