This series came out after Valvrave the Liberator 2 so I watched it, it was pretty good. I didn't research the amount of episodes so I was sort of disappointed when it ended...I was like whattt??? nothing really happened...but after coming to this forum topic..i see that there is a 2nd season! Yeaaa~ nice to know :D
I would not go so far as to call it a second season, since it will only be two episodes.