Dragon Klein - Mamoru Nagano

This is a pretty cool booklet. It's from the earlier parts of FSS and is mostly characters with a few MHs and some technology stuff.

Dragon Klein - Mamoru Nagano

Check the file repository for the torrent file

Magnet Link

AnologHack - Open-Resource Project - 18 analoghack take-fate in the future-on

This is a cool  48-page book containing art by RedJuice and a number of other artists.

AnologHack - Open-Resource Project - 18 analoghack take-fate in the future-on

Check the file repository for the torrent file

Magnet Link

Phantasy Star Online 2 - Episode 1 & 2 Materials

This is a huge, great book. Almost 400 pages (most of which is costumes and equipment designs). This covers the base designs and episodes 1 and 2 as well as some of the cross-promo stuff within Sega.

EDIT- Missed some of the pages to flip, now it's fixed. Repo torrent and magnet links have been updated.

Phantasy Star Online 2 - Episode 1 & 2 Materials

Check the file repository for the torrent file

Magnet Link 

ps- There's 2 more Phantasy Star books in queue too, the PSO 10th and 15th anniversary books.