Rent Fullmetal Alchemist 5 (2004)

The hobbled Elrics return to their childhood village for the first time in four years. As the Rockbells construct Ed's new limbs, the boys sift through the ashes they left behind. While Al comes to the fearful realisation that his memories are fading, Ed visits his mother's grave, and both must redefine their view of family and home before returning to Central's library to research the work of Dr. Marcoh. Nothing could prepare Ed for the shock that is to come. Having just learned the Stone's secret ingredient, how can they reconcile their strong desires to fix their own bodies with the knowledge of its gruesome costs?