Shikotsumyaku/alt1

This is an extremly unique Kekkei Genkai possesed by the now extinct Kaguya clan,it allows free control of one's skeletal structure. Because of this control they could manipulate the cells responsible for bone growth and replacement, allowing them to manipulate their bones at will. They could protrude bones from anywhere on their body, control bone density, and can even regenerate any bone they have lost at will. A very good example is when Kimimaro used his spinal cord as a wip making it stronger than steel.

This and more makes their body almost if not indestructible,and any point of contact on the body could become as sharp as a spear tip, giving them a nearly perfect defense.

Most of the Shikotsumyaku abilities came in the form of bone-utilizing dances named after flowers. The most basic of these dances is the Dance of the Camellia (Tsubaki no Mai), which uses the humerus of either arm as a sword.

The Dance of the Willow (Yanagi no Mai) uses extensions of bone from the body to attack the opponent, coupled with large amounts of acrobatics to increase the attacks' effectiveness.

The defensive Dance of the Larch (Karamatsu no Mai) uses growths of the user's preexisting skeletal structure to ensnare the opponent and stab them as the bones are growing.

The The Dance of the Clematis (Tessenka no Mai) is an attack with two parts, the first being Vine (Tsuru) and the second being Flower (Hana). With Vine, the user rips out their spinal cord and use it to trap the opponent. Once immobile, the user uses Flower to produce forms the body's strongest bones into a giant drill on the user's arm to crush the stationary opponent.

The final,and most powerful dance, Dance of the Seedling Fern (Sawarabi no Mai), creates a giant forest of bone spikes that emerge from the ground and impale the opponent. The user is able to emerge from any bone at will, make it truely deadly.