I had never heard of this before, but it seems that this is a
manga running in Young Comic (semi-ecchi) and there is going
to be a PC game and OAV and drama CD coming out.
The seiyuu for the four main girls seem to be cosplayers or idols
or adult game seiyuu.
I don't think they were chosen for their voice acting abilities.. (^_^;)

Game info:
  http://www.image-works.jp/pudding_index.html

Some seiyuu info/pics:
  http://members.jcom.home.ne.jp/hinokikun/alamode1.html

Famires Senshi Pudding [Windows]
 Pudding      :: Minami Chiharu
 Jelly        :: Mizuno Saya
 Chiffon      :: Tachibana Rena
 Pannacotta   :: Mizuki Sanae
 
Mizuno Saya looks cute.

some info on the "seiyuu"

Minami Chiharu (南見ちはる)
 /* F */
 /* Born: S56/03/17, Saitama */
 /* Type A */
 /* Sizes: 156 cm, ?? kg, 81-60-87 */

Mizuno Saya (水野沙耶)
 /* F */
 /* Born: S58/10/15, Ohta, Tokyo */
 /* Type A */
 /* Sizes: 155 cm, ?? kg, 81-58-88 */

Tachibana Rena (橘れな)
 /* F */
 /* Born: S58/09/11 */
 /* Type O */
 /* Sizes: 156 cm, ?? kg, 90-59-85, 23.5 cm */

Mizuki Sanae (瑞希早苗)
 /* F */
 /* Born: S56/12/23, Yamagata */
 /* Type O */
 /* Sizes: 160 cm, ?? kg, 80-57-84 */

--
Hitoshi Doi                                      "this place also for rent"
                           " this space for rent "
http://www.usagi.org/doi/                                     doi@usagi.org