The story line about this manga's really suck. I hate the MC because just only got jealous and kill mankind. Primitive can't know about they're doing, and didn't know what's true and wrong. I think the MC like try to learn the new world, get along with they're, step by step try to know about new peoples habit and final he's become King and get many harem, but i'm totally wrong and really disappoint.
This is what my thought on my mind 'KARMA IS EXIST'. Thanatos now got the Karma what he do on the past to Inferno, and now, he's become doll on Pandomenium palm. This kind of manga's i already know how the ending, and i always hate half-hearth enemies. If you antagonist, then antagonist, don't do half-heart evil kind roll.