I've read both books by Mr. Fletcher. I think the Grimdark level, for lack of a better word, is similar to PoN/tAE.
I liked the books a lot. He uses German names for ppl, objects, magical system and some other stuff. Knowing German it adds a layer to the story for me, but if you don't I guess the names are also just cool-sounding (my opinion) and looking them up can give you some 'ah-hah!' moments.
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