Story
The premise was good, a sword saint being reborn and all, but there wasn't much world building, the plot was extremely simplified and dumbed down which contributed to why I feel it was mediocre. Felt predictable and didn't really engage well hence why 20 chapters was more than enough to browse through. The ending was again.. predictable and was not that memorable.
Art
This though, was something I liked about the manga. You can read it through and see that much of the time was spent drawing the manga. The quality of the manga was consistent throughout which was good and there were some scenes which I find great!
Character
As much as I said the story was mediocre, the character development (if any considering it's 20 chapters) was minimal but their background story was covered sufficiently.
Enjoyment
It was fair because though not breathtaking it was consistent with what it was meant to be. A fairly simple plot, world building and character development.
Overall
If you simply wanted to read something to fill your time, then this manga is a good choice. 20 chapters is something you finish quite easily within an hour or so.