Name of Item:
Iron Furnace (鉄の火炉, Tetsu no Karo
Ninshū metallurgy, Leatherworking
20 kg northern steel, large hide of leather, cloth
The suit of armour belonging to the head of the Terumi clan, Testu no Karo has passed from clan head to clan heir since time immemorial. The suit's last owner made several changes to what had otherwise been a simple steel dō and kusazuri. The armour now, having been modeled after that of the samurai of Tetsu no Kuni, has all of the furnishings of classic samurai armour: large steel sode plating each shoulder, kote and suneate for each extremity, and a menpō. A jingasa was eventually crafted to complement the suit, as were a pair of kusari tabi Each piece has been finely lacquered and engraved, but years of wear have faded its detailing. The cloak and uwa-obi that were its last owner's have been lost and replaced since the armour has come into Jun'ichirō's possession. Each piece is enamelled a dark blue or deep black, if dulled.
The defining feature of the armour, both before and after its refurbishment, is the porous dome on the back of its dō. The metal protrusion takes the shape of a turtle's shell (rather than the conical shape that Han's armour's furnace did), and serves as a housing unit for the Futton chakra used in several of the clan's jutsu. All of Tetsu no Karu's metal has been worked specifically to withstand the use of the clan's most potent technique, Futton: Kōmu no Jutsu
, and as such is able to withstand all stages of the technique with the exception of pH 0. When exposed to pH 0, the armour acts much like Shōton's crystal, taking a full three or more posts to completely disintegrate. The process of forging armour of this variety is intense and unique, requiring the presence of a Terumi familiar with the full extent of Futton: Kōmu no Jutsu