Metal Release (Nope2937)

Metal Release (金遁, "Kinton") is yin enhancement of earth release that allow it to create and rearrange specific substances within it, particularly metal. Most Shinobi who use this release have tendency to only create one type of metal. The rarest user of this release can manipulate more than one elements to create alloys that is more powerful than its parent elements.

Overview
Yin and Yang relationship with nature transformation give birth to various kekkei genkai, Hiden, and summon-based ninjutsu. Metal Release variants are mostly Hiden ninjutsu, theoretically one can learn it to use it. Some of them do require special chakra or bloodline to use.

Type

 * Steel Release (鋼遁, Koton) is among the rarest Metal Release, and fall in a kekkei genkai category, as manipulating more than one element (Iron and Carbon) at the same level require special bloodline to use.
 * Titanium release (鐟遁, Teiton) is also rare among the metal release user, albeit not a kekkei genkai. The metal is fairly lightweight but strong, which the user usually use as defensive or supporting technique.
 * Gold Release (金遁, Kinton) is one of the most valued and sought after metal release. There are no current user in this era, but during first Great Ninja War, a shinobi of Ishigakure was staged to be kidnapped by three great hidden village, but killed in the process. This metal release is chakra consuming, due to Gold's high density. For weapon creation purpose, it’s also inferior to iron/titanium/steel, as it is soft.
 * Mercury Release(汞遁, Koton) is the most versatile and dangerous in term of battle power. Mercury release exist in Ishigakure as a kekkei genkai that rarely manifest within Takahashi Clan. It’s chakra consumptive due to its density. It is also poisonous and liquid making it tricky to be controlled.