Yeah, what relentlessflame said. Saves me a lot of brainpower, which, to be frank, isn't there right now during the morning when my coffee hasn't kicked in yet.
While I am also an advocate of taking the story and characters as they are and working from there, it's really difficult to do when there's such an overt
author appeal overlay whenever slavery comes up and also Naofumi sometimes acting up as if all his prior character development hasn't happened yet. With slavery, it seems obvious to me that the theme comes up again and again in a way where the writer can justify its use by the good guys. And that's a choice of his, not something he can't remedy if he'd wish to do so.