Devils meets the Supreme King

devils, angels, Fallen angels and even Neko's and other creations know that their was many great and power creators that once lived and still remain, however not many about one man.

light is always show as good and pure. but this White light brought nothing but destruction and pain.

but this light was no match for darkness that brought order and peace. it was know as the gentle darkness.

and devil king sister. Rias Gremory and her peerage is going to meet the boy that shows them the power of this Gentle Darkness