Like the name of the Kekkei Genkai suggests, Blood Release provides Muketsu with the ability to create and manipulate blood. This is split into two stages: the creation of blood, and the manipulation of it. The creation of blood happens through a rather unique process. As it is already known, the yang provides the capability to "breathe life" into all creation. This is the same in regards to its purpose within the Kekkei Genkai. By using the Yang Release upon the bone marrow, the user is able to breathe "life" into its functions, therefore increasing its ability to produce blood substantially. In turn, this allows for a surplus quantity of blood to be produced for Muketsu to utilize at any given moment of time.