Queen's Blade official visual combat book based on the game Lost Worlds featuring Echidna illustrated by F.S.

Title: クイーンズブレイド 歴戦の傭兵エキドナ (Queen's Blade - Rekisen no Youhei Echidna)
Artist: F.S
ISBN 489425431X
Published: June 9, 2006

http://queensblade.net/characters/echidna