Attention: English is not my first language
Yet another compilation of generic tropes performed in stupid ways. It's the execution that matters in the end, and here it didn't work.
Just like in bleach, the MC here is very special, he always awakens new powers in a moment of need, without ever having to train to develop the skills he already has. Usually this occurs when thinking about friends promising or something like that, like saint seya. The power of friendship is a key piece here.
As standard in these mediocre shounen, talk no jutsu is the cure-all solution to all the problems the characters are going through in their minds. Usually it's a shame to have this solution, because the characters' problems are usually very interesting, so it's a shame to have such a quick and poorly developed solution... but that's not the case here. The problems that secondary characters go through are mostly silly or extremely exaggerated. An example is a family composed of bushi, who, by the way, are terrible characters, are going through a very big family drama that occurred due to a very weak kick; it's a storm in a teapot. But all the years of resentment and hatred is resolved with the appearance of the MC, who performs a Talk no jutsu that magically makes them finally talk and resolve everything.
The world doesn't make much sense, but it had its potential, but its worldbuilding, however, doesn't help much. There is a big difference in quality in these aspects between this manga and magi, another work by the same author. Monsters, here called Kishin, have been roaming the world for a long time and there have been few of them since the beginning, and there's yet a lot of them alive, which doesn't make much sense. There are several famous and very strong groups that hunt them and this has been going on for a long time, so how are there so many still alive? even when not every kinshi is strong? Simple, if there were little, there wouldn't be much monster for the MC to kill and story to tell.
This story wasn't very well planned, which is a surprise when remembering that such stupid manga belongs to the same author as Magi, a work that is much better planned and executed, even considering some reservations that I have with the characters and themes of the Magi.
And both the main and secondary cast are uninteresting and lame. It's the same thing every other seasoned shounen reader has encountered, but in a worse way. If you like it, good for you, but if not, good luck if you decide to read it, because orient is 100% made up of them. The worst case is the MC, who has the intelligence and maturity worse than asta from black clover. Talk no jutsu is already a stupid annoying thing, but here is in another level. And just like in many other shounem, here the problem of minimizing the harm of some characters is makingnor maked, like, there's one that is portrayed as a super nice guy, but he enslaves people... I realized right away that the author would not go deeper into this and this was created just to take the MC to the place the author wanted, so no one should think about it too much because even the author himself didn't think... but still... that doesn't erase that he enslaves people (something which the MC is super against and made a big and stupid speech about) and the characters' reactions to it make no sense (even inconsistent within their story).
The plot is very simple and basic, so, if you don't have any investment is the characters, i dont think you will feel some excitement from it.
About the art: let's say that it is very noticeable when the author made an effort to make the illustrations and when not.