Kaguya Clan

Kaguya Clan:

The Kaguya clan (かぐや一族, Kaguya Ichizoku) was a (now extinct) clan, known to have been very barbaric. Select few, namely Kimimaro, possessed the Kekkei Genkai Shikotsumyaku. With the exception of Kimimaro, the clan was killed off when attacking Kirigakure. The clan was very savage and had no tactics when going to battle. Kimimaro would for years live as the last member of the Kaguya clan, but eventually died of a terminal disease.

Apparently, at least the members who possess the Shikotsumyaku abilities have a different bodily structure

Shikotsumyaku (屍骨脈; Literally meaning "Dead Bone Pulse") is the Kekkei Genkai of the extinct Kaguya clan, which gave them the ability to manipulate their own skeletal structure. By infusing their calcium with chakra, they can manipulate the growth and properties of their bones to their likings. The ability seems to be rare amongst the clan members, as Kimimaro was the only one to exhibit it out of his entire clan.

Apparently, this ability gives the user a unique body, as when Kimimaro was fatally ill, Kabuto Yakushi claimed there had been too little information on his body to give any medical treatment.

edit AbilitiesThe main capabilities of Shikotsumyaku is allowing the user to manipulate their bones' growth. This allows them to create weapons of bones that can either protrude from any part of the body, or pulled out and used like hand held weapons. They can even fire pieces of their bones as long-ranged projectiles. Any bone that they remove from the body immediately regenerates, as does the skin that is damaged when the bones are removed. Users can increase the density of the created bones, making them stronger than steel. This not only makes the created weapons very powerful, but also makes their bodies virtually indestructible.

From what the only known user of this ability, Kimimaro, has shown, most of the techniques are named after flowers. Most of them are also taijutsu-based sword dances, which are used for close combat and defense. However, as Kimimaro demonstrated, the bones can also be forced to grow from the ground, as a form of a ninjutsu, and that he can emerge from any of these bones.

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