6 episodes
First episode: E1

Tokonome Mamori is transferred to Mermaid - an artificial quarantine island for people with superpowers. When Mamori is attacked, a newly transferred girl named Mirei saves her. The enemy doesn't stop, however, and the two are soon cornered. Just when they think all hope is lost, Mirei kisses Mamori, and Mamori turns into a sword. Mirei then wields the sword and launches a counterattack against their enemies.
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6 episodes
First episode: E112 episodes
First episode: E1Quick answers about this series, release status, and episode totals.
Valkyrie Drive: Mermaid first aired on October 10, 2015.
Valkyrie Drive: Mermaid currently has 1 season and 12 episodes.
Valkyrie Drive: Mermaid is ended, and no upcoming episode is currently scheduled.