I've watched Chrno Crusade twice: once in 2005 and rewatched it in 2010. It took me 10 years to find these incredible specials. Animation: 1) It's a mix of chibi-style scenes and clips from the original series. 2) Some clips from the original show are repeated and I didn't like that. How can 24 episodes not be enough? Sound: 1) The only voice you'll hear is from Chiba Saeko as Azmaria. Not my cup of tea in terms of narrating voices but I guess it could be worse.2) Sometimes Azmaria's lines aren't synced with the her chibi animated self.

Story:
1) I started this off by describing these specials as incredible. They will explain the historical setting, religious theme and concepts and characters' traits and tools that you may or may not be aware or understand and will not spoil the show for those that watch the specials after the designated episode (each special is assigned to a certain episode in the DVD).
2) The 6th episode should've been shorter because the last moments was just boring talk that was clearly done to fill in the 3 minutes.
3) If you haven't watched Chrno Crusade yet, don't read the rest of this section. The 11th episode poorly explains Aion's need to decapitate the Pandemonium's head. Aion is the personification of the 7 Deadly Sins (6th special) and those sins are capable of influencing and controling people's lives. The Pandominum's head holds the wisdom and violence that Aion needs in order to increase the influence and power he has over people. The fact that Azmaria didn't remind the viewer that Aion = 7 Deadly Sins could lead to misconceptions about the way she phrased it.

I loved these specials and although it took me 10 years to find them, it was well worth it. 8/10