Skeleton Bone Density Technique

A technique that can only be used by members of the Kaguya Clan. This technique allows the user who possesses the Shikotsumyaku Kekkei Genkai to alter the density of their bones to liking from being light to as hard as a diamond. This has some disadvantages as making their bones light can make them faster, but makes their bones easier to crack whenevers making their bones harder can increase their defense and power of attacks, but makes them more slower.