Fire Release

The area of elemental Nature Transformation  are offensive type techniques that allow the user to to manipulate their fire chakra-nature to create fire by super heating their chakra and releasing it from their mouths. Fire Ninjutsu is common among Konohagakure ninja, with the Uchiha Clan being particularly proficient with its use. Fire Release ninjutsu is commonly affiliated with the Tiger hand seal, "Tora".

A Fire Ninjutsu is strong against a Wind Ninjutsu of the same level/rank, but will naturally be overcome by a Water Ninjutsu with the same level/rank. Because wind-natured chakra will naturally feed into a Fire Release Ninjutsu, wind and fire ninjutsu can be used in combination in a synchronized collaberation jutsu, two or more, which when performed with the right timing will combine into a jutsu of greater power than the sum of it's parts.

As demonstrated by the fight between Hiruzen Sarutobi and Orochimaru in the 'Invasion of Konoha' arc, Fire Release also has a good affinity with Earth Release and so can be used together in a collaberation jutsu. When used together in a collaberated jutsu, the Fire ninjutsu, (Fire Release: Fire Dragon Missile,) needs to be implemented with the right timing in order to be combined with the Earth ninjutsu, (Earth Release: Earth Dragon Bullet,) the Fire chakra being provide with more combustive physical force by the accelerant from the Earth ninjutsu.

Furthermore, in the case of Elementally-recomposed Nature Transformations, (rarely found outside of a kekkei genkai,) Fire-natured chakra can be blended with Earth-natured chakra; the fire chakra superheats the molecular structure of the earth, (that the earth chakra provides and controls,) and induces it to melt into molten liquid rock, creating Lava Release Ninjutsu.

In episode 111, in part II, it was confirmed that a water-natured jutsu could be overwelmed by a fire-natured jutsu of a higher rank, producing enough heat to cause the water to evaporate, but it has yet to be confirmed or disproved whenever-or-not Fire-natured chakra could strengthen a Water-natured ninjutsu, (considering that, according to the elemental cycle, wind strengthens fire).