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A franchise that consists of three projects:
Franchise features plenty of fanservice, Yuri and action.
Primary feature on the franchise is girls transforming into weapons when being aroused and wielded by other girls in battle.
The anime is produced by Arms Corporation and aired in the fall of 2015. Bhikkhuni was released December 10, 2015 and would receive a PC port on June 20, 2017. Siren was released in December 2015 but shutdown in July 2016.
The following tags implicate this tag: valkyrie_drive_-mermaid- (learn more).