Magical Girl Raising Project, Vol. 3 (light novel) - Asari Endou, Marui-No Marui-No

What makes for a true magical girl?Just a few short weeks ago, sixteen magical girls were pulled into the new Magical Girl Raising Project, a video game-like world where they must work together to survive. But between the formations of factions, high tensions, and even a mysterious murder, trust and cooperation have proved difficult. As the heroines enter the final phase, can they band together and succeed? Or will their fear and weakness tear them apart?And what is the master of this game truly after...?