The back cover has a nice color picture of the cast members
(There seems to be some kind of mark on Machiko's face.
It was on all of the copies of the CD that I saw. ;_;)
The insert book has individual black and white pictures of the seiyuu,
as well as a short biography.
This is a very, funny story...especially the bonus story on track 9.
[VERY cute voices by Nogami Yukana and Toyoshima Machiko.
Track 9 has the girls talking like Shibuya "ko-gal"! Very funny! - H.Doi]