Ah, that failed series.
Some people believe it would've become a good one, but it failed to be any worthwhile parody.
Turning most of the Isekai protagonists that aren't part of the milquetoast crowd into representations of those was a really bad call, as well as using the low effort technique of turning them into generic villians, with gratuitous rape involved in order to make them easy to hate.
While the Isekai Genre certainly could use some good Deconstruction of it's many shitty tropes, a lot of which are really low-hanging fruits in that regard(Slavery, False Underdogs, OP Protagonists with no responsibility, shallow worlds, etc.) this certainly wasn't it.
Really question how that even went beyond the first draft before getting canned.