I got a copy of the book that came with some DOA5LR releases overseas and it's got a bunch of awesome concept art worth sharing from the entire series. There's a bunch of new stuff I haven't seen from really old to fairly recent. The DOA5 stuff makes me wish Team Ninja had a dev blog now... I've only scanned any pages with concept art really relevant. Full album for viewing or downloading (293MB zip) pleasure. Enjoy!