Herrscher's Strongest Draconic Hero Of DxD: Deliverance

(DxD x HI3 x FGO x Vivid Strike) After Kiana Kaslana, who had been controlled by the Herrscher of Void Sirin, was saved by her teacher Murata Himeko when she injected a serum to suppressed the powers of the Herrscher of Void and brought Kiana back to normal. However, at a cost, Himeko died while fighting the Herrscher...