Valkyrie Drive: Mermaid has 1 season.

Valkyrie Drive: Mermaid has 12 episodes.

The key characters in Valkyrie Drive: Mermaid are Mirei Shikishima (Yuka Iguchi), Mamori Tokonome (Mikako Izawa), Akira Hiiragi (Yuna Yoshino).

Valkyrie Drive: Mermaid was directed by Taiji Kawanishi, Hiroaki Nishimura.

Valkyrie Drive: Mermaid was produced by Takuro Hatakeyama, Sho Tanaka, Kazuo Onuki, Noritomo Isogai.

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.

Valkyrie Drive: Mermaid is rated 18.

Valkyrie Drive: Mermaid is a Romantiek, Action, Anime show.

Valkyrie Drive: Mermaid has an audience rating of 6 out of 10.

Valkyrie Drive: Mermaid episodes are 24 m long.

No, this show was canceled after 1 season.