Classic "killed by your own overconfidence" trope, but the real highlight was the setup for the cliffhanger. Each panel framed like it's a shot from a movie.
Also in the previous chapter, obvious death flag indicated by Mon...
Well, Azumi has reduced the Japanese population by 53% by now, so if the story kept going there wouldn't be anyone left for her to fight ...
I wonder whether the weird "sequel-not-sequel" will be done? Not sure that sounds interesting, but just for completeness sake ... another 18 volumes ... ^^