i highly suggest reading the web novel if you cant wait, since basically the manga had slower pace and couldnt catch up with the LN at least, now talking about the series, the series is very good is like the world is moving with or without makoto, the novel or this series had some interesting take on the world, godhood, war, racism, and hate or love. now why is there two heroes there is to give some kind of different sides and how it would affect the world, and shit you not i actually like hibiki takes on this world they lived in and makoto's way of living.
you will find the bits of example of great way of story telling from the WN and you might be feeling satisfied and even surprised at some of makoto's action like WTF is this the makoto when angered holy shit makoto. now its not without any flaw, sure there are flaws here and there but not to the point of frustration. i will give you a summary of the best thing of this series is from chapter 60 - 230 in WN, now there are might be some of you who are reading or have read it and say its shit at chapter 120-ish, just read a bit more, he will change after that, and even more after chapter 300+ to be a more "cunning or evil" i guess
this is my favourite series, coming from the guy who read chinese shit, i will give it 9/10 in the story, but i enjoyed it, a LOT.