TL;DR: Boring and uninteresting. Not an enjoyable read.
Overall nothing was egregiously bad, but there were no interesting or redeeming factors either. There was no tension within the story (something which is very possible even w/ overpowered protagonists) and the plot was very predictable.
Art is bad. Not even up to the usual standard of crappy isekais. Characters were uninteresting and all just incredibly evil and malicious. There was no nuance to any of the characters, nor plot points. It felt like it was trying to parody the genre but the isekai genre is already a parody of actual good plots.
If you enjoy head-empty OP "stories" then give this a try, otherwise save yourself the time and read something else. Like Berserk.