Blood Release: High-Speed Regenration

This technique allows the user to recover from any damage that he sustains by causing them to heal at an increased rate, closing the wounds on his body and causing any limbs that he's lost to grow back.

Despite the extent to which it can heal the body, internal organs such as the brain cannot be regenerated; if such irreparable damage is sustained, the rest of the body can continue to regenerate, though to no avail. In addition, if the body is damaged before it has the chance to heal, or if enough damage is inflicted on it at once, then it can be destroyed.