The Tsuki family is one of the Four Great Noble Houses of the Soul Society in B14's fanfics. The Tsukis are known to have large quantities of reiatsu and many of them have became high-ranking Shinigami in the Gotei 13.
- Current head of the family: Michimaru Tsuki. A captain of the 13th division in the Gotei 13.
- Shiroshuu Tsuki, Michimaru's wife, lieutenant of the 4th division. A part of the family by marriage.
- Maryu Tsuki, Michimaru's first son, a special member of the Gotei 13.
- Sengetsu Tsuki, Michimaru's second son, a special member of the Gotei 13.
- Mizugiri Tsuki, Maryu's wife, a Tsuki by marriage. Lieutenant of the 6th division of the Gotei 13.
- Kotetsuga Tsuki, Maryu's son, an unseated member of the 11th division of the Gotei 13.