Kimimaro's Shikotsumyaku

Kimimaro's abilities came from his kekkei genkai, Shikotsumyaku, which allowed the user to manipulate their own skeletal structure as a means of combat. Specifically, it allowed Kimimaro to manipulate his osteoblast and osteoclast cells, which are responsible for building or breaking down bone tissue. This ability gave him absolute control over the concentration of calcium within his bones, allowing him to control the density or malleability of them. Kimimaro also stated that his bones were stronger than tempered steel. Kimimaro used this ability to wield his bones as weapons in battle, and could use them in the form of taijutsu attacks (which he called dances) to give him a variety of abilities, as well as grant him a near-invincible defence, able to withstand from being crushed by being buried under 200 metres of compressed sand, and most of the impact from even a chakra-enhanced blade, and cut through regular shuriken.