There are 68 forging materials to locate in Tales of Arise. These can be found as enemy drops and in some chests, and are used to forge new weapons for the party. This page details the location and use for the Demihuman Muscle.
Demihuman Muscle can be found on Mount Dhiara.
||Menancia - Mount Dhiara, Mahag Saar - Este Luvah Forest
||Mahag Saar - Este Luvah Forest
|Cyslodia Chief Spearman
||Cyslodia - Riville Prison Tower
Weapons Forged with Material
||Refined Grouper Flood