鋼の錬金術師 パーフェクトガイドブック [Hagane no Renkinjutsushi Perfect Guide Book]

A trio of companion guidebooks published by Square Enix alongside the original Fullmetal Alchemist manga run from 2003 to 2009, these volumes collect character profiles, behind-the-scenes art, and detailed breakdowns of alchemy and story lore. Assembled with the direct involvement of creator Hiromu Arakawa, they offer fans an encyclopedic look at the world and its mechanics, bridging the gap between the printed page and the beloved anime adaptations. Essential for completists, these guides preserve the series' intricate worldbuilding in a compact, authoritative format.