Akiyama Clan

The Akiyama Clan ( 秋山 一 族 , Akiyama Ichizoku )  is a prestigious clan found in the uttermost rear corner of Iwagakure. They are skilled in Earth jutsus like most of the country's civilians are. Their Kekkei Genkei gives the user the ability to use Fire Release.

Background
The Akiyama is not one of the oldest clans residing in Iwagakure, but one of the more notable ones, alongside the Yakamashi Clan.

The main branch of the family are direct decendents of the original founders -- those more likely to posses the clan's kekkei genkei. The secondary branches blood consists of those who are more distant from the main family, e.g. second cousins and so on. Their blood is deemed to be 'diluted'.

Clan members are permitted to marry those from neighboring clans, the secondary branch encouraged to do so. The main branch is permitted also, but it is preferred to marry someone within the family (distant cousins), to keep most of the pure blood, and keep a steady chance of the kekkei genkei continuing, rather than dying out.

The clan member that happens to be the carrier of the gene for Leibden usually takes that opportunity to join the explosion corps within Iwagakure.

Clan Symbol
Since the founding of the clan, the symbol has been modified very little. The end result being a swirl and what appears to be a small spark within a bold circle. The swirl representing the Earth and the spark, fire, and the use of this clan's abilities.

Clan Jutsus
There are two jutsu that have been created and passed down through the family. They are only of use to the member currently possessing the kekkei genkei. A clan-wide jutsu is a seal, placed upon the user's dominant hand. It binds a weapon of choice to that limb and can be used interchangeably between weapon and appendage. Every member of the clan is encouraged to make the seal, but it is not necessary.

Earth Upheaval
The user slams their palm(s) to the ground, rapidly heating the earth's crust until it can no longer hold back the pressure; tearing up the ground towards the target up to 10 m (32 ft) away from the user, in an explosion like reaction, sending 900°C debris hurdling in all directions towards the target.

Genson Akumu
Literally translating to "Living Nightmare", this jutsu almost seems like something out of a nightmare. The user's body becomes inflamed, making any landed attacks twice as powerful as they initially began.

Destruction of the Clan
Around the same time Sasuke was born, an attack was laid on the entire Akiyama clan. The Tsuchikage had ordered an entire extermination of the clan due to the village's fear of it's kekkei genkei: Leibden. During this time, only a few members of the clan knew who possessed the trait, and protected that secret at all costs. Two members of the clan (Ookami, and Kasumi) survived, and escaped the massacre, heading to the Leaf.

Relations: Mizushima Clan
The Mizushima clan, a blacksmithing clan found in the Leaf village, were the only trusted workers to provide the Akiyama's with weapons for their clan jutsu. They're known for crafting the best weapons in the Leaf, and the two clans became close over the generations -- some even becoming mentors for young Akiyama's to gain the most benefit from the weapon.

Since the clan's destruction however, the popularity and business for the Mizushima's has dropped significantly.