Artist's commentary
It's super heresy time >_>! Just kidding.
This is a long and silly little epic. I have this particular arc plotted out but I will have to find the time to draw the art.
And yes, in the context of the story, that is actually the omnipotent being of this yuniverse and it takes the form of an amalgamated yukkuri. As to why, you have to wait several pages before the reveal.