Hito-Shura, demon with unmatched power, Was thrown out of its universe after its last battle against Lucifer. Now floating in dimensional gap it would find its purpose once again. To Reject."Neither human, nor devil... all bends to my will!" Megami Tensei x High School DxD, maybe x-over later on. Hito-shura would probably not be paired. As for dxd cast it will be the same as canon.