@FluffyDeath you got link to one? I checked Nyaa and Baka didn't see anything, or does this go under a different name?
I assume you're talking about that new series? If so it's because they use Testament at the end instead of contractor. http://www.animetake.com/anime/shinmai-maou-no-testament/ http://www.anime-planet.com/anime/the-testament-of-sister-new-devil
as always you come threw, I started downloading all the series to start watching them. So far Tokyo Ghoul asnd Dog days have been watched.