Kuro Obi, the coveted black belt. It is thought that when one reaches black belt in any martial art that this is the end. This only a new begaining in your quest. A re-birth in your journey in martial arts. The black belt becomes the common goal for all karate-ka. From brown belt to black belt is the most important time in a karate-ka life. A new shodan must continue to train as though he was a white belt. Because the black belt is entering into a higher realm. There are 10 realms or degrees of black belt. Each one has its own significance. symbolically if the black belt continues to train as though he or she was a white belt,like the white belt turns black, the black belt will turn white.