Review Detail of Zerus in Rewriting #1

whether you call a slave "beloved servant" or not a slave remains a slave regardless of treatment though. the mc is just dumb or likes to submit to others and be their slave, he has the potential to become by far the most powerful being in dxd just by training but he chooses to become a slave. but maybe he'll become a new breed of monarch "the stupid slave monarch" or something, anything else would be an insult to Ashborn. So if you like an Ultra Beta Mc then this is your book.