Kuroboshi Kouhaku is probably best known as the illustrator for Kino's Journey, although he's worked on numerous other games and series like Summon Night, and Allison & Lillia. And while Kuroboshi Kouhaku hasn't participated much in the doujinshi scene, he has released a few gems and Granada Level Q has to be the best of them.
Realeased during Comiket 69, which was at the end of December 2005, Granada Level Q is an A4 sized 56-page (including covers) mostly color book. The collection features both commercial and original designs, along with special illustrations done for stores like K-BOOKS and Melonbooks.
Though there is a smattering of Kuroboshi Kouhaku's non-Kino's Journey art work in The Beautiful World Kuroboshi Kouhaku Illustrations there is quite amazingly no overlap in illustrations between the two books. Most of the illustrations have a full page presentation, though there are some that were originally CD jacket illustrations, so those are half a page. There's even a bit of fan art, with Dejiko from Di Gi Charat and a Komugi illustration from Nurse Witch Komugi Magikarte.
One thing you really notice going through Granada Level Q is that Kuroboshi Kouhaku really likes to draw girls who wear glasses. I don't think I've ever seen this many in one collection ^^ Kitty ears also seem to be a popular addition for most of the girls too.
The last 12 pages are monochrome illustrations along with sketches of some of the color illustrations that are in the book. Kuroboshi Kouhaku also provides his comments under the sketches, so it kind of doubles as an index, even though not all the works are included.
Granada Level Q is probably the best collection of Kuroboshi Kouhaku's work that isn't series related. I think it's even more impressive that even with these illustrations being 5 years old or older, they manage not to look at all dated.