The art isn't as clean as other works as far as artistry goes, but it it doesn't by any means detract from the actual story. In fact, I believe that with the artistic quality portrayed in the manga adds to the story. action scenes, to me at least, have to have a bit of grit to them which you get in Ann Cassandra.
The characters have more definition to them than most of the several chapter-length series I've read. For the length of the story the amount of detail given seems to be adequate.
Pick this manga to read if you want something short with a good plot.
