I rewatch these simply because they're great to watch with friends, just laughing a all the pointless jiggles and camera angles.
Downloaded Episodes: 12

One of a kind, but that ending though.... GAH!

I really don't think I pick up on a lot of the lore, so re watching is probably the best idea.
Downloaded Episodes: 13

Downloaded Episodes: 22

Downloaded Episodes: 51

I recommend watching this Anime more than once, if only to switch from sub to dub.
Downloaded Episodes: 24

Not much point in re-watching unless you like watching it before they begin destroying the women and their dignity.

Downloaded Episodes: 2