Kage-Yubi

An inner circle of the most powerful shinigami. While the individual members may change, the titles and roles they occupy remain the same. When a member of the Kage-Yubi are killed, the role supernaturally falls upon the next best qualified to fill it.
Betrayal 不忠 Fuchou - Lord Moriyoshi Karahashi 
Void 無 Mu - Shinibana Matsuri the apathy shinigami
Denial 拒否 Kyohi - Noriharu Katsura the shinigami of selfishness
Revenge 復讐 Fukushu - Asaji Wakai vengeance shinigami
Isolation 隔離 Kakuri - Kokai Kagawa the shinigami of lonliness