Material Girls.

Set in a world parallel to other continuities. Summer 2010: a strange researcher from a suburban city developed a total-immersion virtual reality game that would sweep the world. The game is called "Brave Duel", a motion-sensing simulation card game with team battles. This is a story of a girl whose fate leads her to meet many rivals, compete with them and grow from the experience. Their summer is about to start!

Parody spinoff of The Gears of Destiny psp video game, following the "ordinary" daily life of the "Materials", i.e. the Material Musume.