Ashiaraiyashiki no Juunin-tachi.

Both are short, few minute OVA based on manga, but with not much introduction to the story. They may not be similar in the story, but they have very similar animation and feeling, so I´m sure if you enjoyed one, you will enjoy other. 

Both shows have pretty poor animation and exposition that doesn't really serve the intended purpose of informing the viewer of anything coherent.