 Rias eventually masters a new finishing attack during her training with Akeno.She later leaves for Romania with Kiba and Azazel to know more about Gasper's ability.In volume 16 she finally shows her new move, called Extinguished Star; Rias manipulates her Power of Destruction into a compression of unimaginable amounts of demonic power; takes form of an enormous sphere with a mixture of crimson and black aura radiating from inside of it that launches it toward her enemies in a slow velocity.