This is one of my items that I derived from the Briefcase Derivable. DMC-4 Pandora Briefcase.
http://www.imvu.com/shop/product.php?products_id=16901548
I actually made this briefcase at the request of my RP husband, KiyoBloodThorn (who has the Male version) because he's a huge Devil May Cry Fan. And because the male version turned out so well, I made a female version.
(Shown is the Female version)