Emilia-Sama

This series actually go in pair with each episodes of the main series. Which I find nice. Unlike what you could find with picture dramas from Code Geas for example that requires you to have seen the whole show for it not to spoil you. I enjoyed it because it is more than just putting characters out of the show in extras where they do stuff. This can actually be both considered canon and develops a bit more the characters on a lighter tone than the main series. So far I have not often seen such extras and I find it refreshing.

AnimeStrife009

Youjo Shenki isn't really what I'd call a 'parody', but more of a short 'behind-the-scenes' series featuring Tanya and the main battalion members simply sharing conversations and having a laugh. The animation is very simple, using chibi characters and few frames. It is not meant to be taken too seriously in comparison to the anime, nor does watching it have much benefit - it is simply a little something extra for anyone who wants it. I personally felt some of the episodes were a little boring, but some certainly were worth watching for the amusement. ~Should you watch it?~ If you enjoyed the anime and wouldn't mind seeing a bitmore of the characters, like chibis and light humour, by all means give it a go.