Valkyrie Drive: Bhikkhuni

In VALKYRIE DRIVE -BHIKKHUNI- a mysterious virus known as the A-Virus infects young women, transforming them into weapons known as 'Extars' or those that control them, 'Liberators'. However, the voluptuous Valkyries are infected with a unique strain, the VR-Virus, allowing them to take on either role at will. (Mobygames.com)