Its a story that starts with a bang.. gets you hooked on interesting plot and characters only to let dawn reader for 30-40 chapters that are boring as he** then they jump back to action and from then on its a really interesting story that keeps the reader hooked to the last chapter. 

If you as a reader get interested in the story from the start then its highly likely that if you read trough 50 or so chapters you will like it once more or even more than at the start. It seems that author sidetracked the story because he didn't have clear idea for it but it got better the later the story got. Similar thing with art style. It got way bettter too. 

If you got to chapter 100 then you will love the rest of it too. Like I did.

At first I got the idea that it was similar to Berserk but it has few similar things like main character with thick piece of metal slab acting as a sword. Then you got a game like system with lvls and stuff from other isekai. Then you got talking dragons. Good companions. Lack of harem for main character that got pursued by girls to the end of earth yet acting as if they don't see anything. Of course they are oblivious but not in Japaneese style which is refreshing. You see their growth and hardship which is really nice to see in characters. Other than cheat abilities that fall from the sky to the aid of main character with their invincible plot armor. You get emotional when characters fight on the bring of death because its a story that makes characters die which is really good part of it. 

Either way. Its a really good story.