Kakumeiki Valvrave Season 2 -

The first season, "Kakumeiki Valvrave," aired in 2012 and contained 12 episodes.

As for the content:

The second season continues from where the first season ended. The story continues with the ongoing struggle between the remnants of the LEAF organization and the Dorssia Empire. New characters are introduced, and alliances are formed. Kakumeiki Valvrave Season 2

If you enjoy action-packed anime with elements of science fiction and military strategy, "Kakumeiki Valvrave" might be up your alley. The first season, "Kakumeiki Valvrave," aired in 2012