shikotsumyaku

Shikotsumyaku is the kekkei genkai of the Kaguya clan from naruto, (literally meaning dead bone pulse) it's rare as only one member of each generation receives it. It allows its user to control their osteoclast and osteoblast to manipulate their own skeletal structure for combat purposes, this kekkei genkai has been stated to be the pinnacle of Taijutsu as it provides the perfect offense and defense.