the person on the most front of the cover is the person he will reincarnate too, and the person behind is another character in the story. there's not harem as of now (i believe ..) (●'◡'●)ﾉ
I believe that the dude with black hair is the MC and the Blondie is the original ego of the body the MC took over and had become a 'god' but just in a very different art style
The blackie is our MC "vinchen", formerly daven. The blondie is the "original vinchen" but now he's become a minor god and is nameless. He accompanies current vinchen/daven everywhere he goes.
I have 1 question... are those two guys on the cover the same person Or is the person behind is the one who he'll reincarnate into? i hope this doe5have harem as well