Widely used for basic reinforcement, it can serve as a base material for Prosthetic Tool upgrades.
Ashina is burdened with thick snow and infertile land, but the scrap iron dug from her soil is anything but crude.
Found in Outskirts Wall - Stairway by a piece of Great Serpent skin hanging from a tree. From the Sculptor's Idol, turn into the stairway's opposite direction and drop onto the ledge behind the Rooster. Grapple onto the small platform below to reach it.
On a platform near a house opposite of the stairs leading to the Blazing Bull.
Ashina Castle
To the left from before the stairway leading to the castle, open two sets of gates. The item is by a tree in the grass.
Grappling onto the right from the first Ashina Castle Sculptor's Idol, on the path that folds back, overlooking the bridge with the Sculptor's Idol, by a tree.
In the chamber to the right after the Upper Tower - Antechamber Sculptor's Idol, behind the planning pupils.
From the well towards the Abandoned Dungeon, on a ledge that can be grappled to.
Near the Moon-View Tower by a tree in Ashina Reservoir.