I'll simplify that, the entire first half of the first volume was written in WN style: the MC wasn't a greedy power grabbing freak, he abuses the system, always using the game history, most of his decisions to kill were forsed by the "bad guys" etc. He was your classical isekai guy who had brains(finally). That's your WN- nearly normal guy(who died from truck-sama, I'm not kidding ya), who was dumped in insane world. The autor changed this in LN, where Dantalian is a control freak with insatiable lust for power. You also can see this contraversion here in forums, when those who liked the first volume got the butthurt from all the others.