@criver I like it because its an OP character that knows they are OP so the story makes it about them not just kill the thing and move on.
It's like superman comics. Everyone knows superman can just blink or breathe and the day is saved so they make the story about things around him giving reasons why he doesn't just save the day.
That also leads into evil superman just being superman who said "fuck stalling im ending this shit."
The selling point isn't the MC it is every one that interacts with the MC.
And besides, the LN has all the background details the manga is missing. LN>Manga>Anime>Movie