Upon actually catching up past the first arc: Art goes from great to great but different (and people complained) to sub-par.
I am one such complainer.
Not sure if you kept up, but artist changed again xD
if you read a lot, the story of helmut is nothing new
they also inserted the school arc
I like such stories, even though I've read countless...
My only gripe is when an artist changes for the worse.
reminds me of Legend of the Moonlight Sculptor, which went from a unique watercolor art style to a downgrade, which was still acceptable, but then it looked like most generic art during that time period.