The Koakuma/Patchouili section is kinda bad for quality. I mean look at Koakuma when they move her down to the foreground. Her ahoge actually isn't fully drawn so they just lowered her sprite and didn't bother to finish the curl. Still semihot though.
Also look at Page 24 and 33. He failed to crop out the whitespace. Also with page 35 and 36 Koakuma's facial layout completely changes (Position of mouth and the location of and size of eyes change) as if he forgot how he was going to draw Koakuma in this.)
@Geneyuss: Admittedly I came here for the Koakuma area but looking at the Reimu one Its hilariously lazy.
@Zelinko: Wow, yeah. That's pretty shitty oversight on Koakuma. lol
But holy crap, also check out the laziness that is Reimu's pics. The artist literally just copied the same fucking base image, selected a brush, chose white, and scribbled progressively more over her. Warning to Reimu fans: if you came here for Reimu, you all get shafted with this set. :P
Overall: it's not a BAD set, but it is pretty dodgy in places. 6.5/10