Because the manga up until now have been very fun (and 9/10 for me) I decided to read the novel and up to this point in the manga is almost the same as the novel, just tiny changes. this chapter should be equivalent to around novel chapter 65~70.
Well, the point is, the story is good at around chapter 100 of the novel, after that it's TOTAL CRAP... I read up to 209 from 270 (includes specials) and I couldn't keep reading anymore. It seems the manga author isn't the same as the novel author, I hope the manga author changes everything during and after the "Ant Island Arc" (right now we have hints of it, but will take some time before it actually start), otherwise this manga is condemned to be trash.
I read the spoiler for the end of the novel and having read up to chap 209, I can say that my score for the whole thing is (2/10). So, my recommendation is, brace for impact disappointment, because the future of this manga is trash (if it don't deviate 100% from the novel) (