Hilarious, but to be fair I think most artists/authors do draw based off photos at least when doing backgrounds, that's the whole reason they get to go on vacation to spots like Paris, Italy, and Russia, to gather material. Though perhaps, the copying shouldn't be that blatant, he could've modified a few details or left out some.
@gevudan far better to have some kind of copy background drawn by an individual than a blank white background like a lot of mangas. I enjoy the style of this manga, though shading could be a little better to give a little more depth even if it meant losing a bit of detail
I'm just surprised to see how easily humans seem to get destroyed considering how strong their magic is plus you'd think in such a dangerous world everyone would want to learn some level of self defense
Now, about his 'perfect straight lines'... are all of the labyrinth's paths really like that? I expected some curved corridors here and there and circular rooms.