Well, I really like the story.
I like the characters, I like their interactions and how they build and grow.
I just think that they went from one genre to another a bit. I mean... suddenly there are magical creatures, magic/legendary weapons, demons and gods. To me the change wasn't really smooth. There were no clues scattered or hints. It suddenly went from the blacksmith saying he saw a magic/mystic weapon, to meeting an legendary creature and soon enough there were demons and immortals. Although he did reincarnate, so SOME magic or divine power could have been involved.
The Scholar's Reincarnation