It's pretty good; the characters have great proportions, their expressions are interesting, the text is also big enough to be read.
However since this is a seinen manga, I would prefer it to be more impactful.
Let's take panels 1-12 for example.
-Rather than zooming into the antagonist, I think it would shape the atmosphere more if you draw them from far away, framing the landscape and ambience of the scene (what does the setting look like? What's in the surrounding land? What's the weather? etc.)
-It's never bad to have a progressive story, but linger on certain scenes to make it feel more dramatic.
The lady was shocked that the sacred sword was tainted, so make a lingering a shot on the sword as he raises it up to define its change.
And if I may be honest, I didn't really understand what happened when the man brought his sword down until I read the next panel. I think it would've been better if you'd shown us the a landscape view of the ground crumbling, then the debris floating up, then just the scene of the two people talking to each other.
Good luck!