Damn it people, you could SAY something... <_<
Well, here's a general outline of the world this would be set in, as well as a list of captains.
The World: History
Roughly 500 years ago- the Shinigami/Quincy War took place. However, there were factions on both sides dissenting, and thought the Quincy were nearly obliterated, an agreement was reached before their extermination was completed, and the Quincy were incorperated into the ranks of Seireitei as a Support Division.
227 years ago- Arek Askarel, the Captain of the 6th Division, attempted a coup to take over Seireitei. Thanks to the Quincies and his two Leiutenants, the loss of life was kept to a minimum.
Arek was executed for teason, and his zanpakto was locked away.
Roughly 200 years ago- The Quicy ascended to a position of power in Seireitei, as their numbers had reached sufficient levels to beconsidered a true power, and due to their help in quelling the rebellion of the former 6th division captain. Several had their weapons modified to be similar to a zanpakto, and purify Hollows rather than destroy them.
123 years ago-
65 years ago- Several captains petitioned for a reform of the rules regarding a shinigami's retirment. Central 46 allowed the peition to pass. If a shinigami reached sufficient rank, they were permitted to retire to the human world. Whiule they were supposed to be monitored, many found ways to avoid this, and have since vanished from Seireitei's notice.
Captains: Not yet completed, and may be revised based on the people who play.
1st Division Captain- Yamamoto
2nd Division Captain- Hawk
3rd Division Captain: Zero
4th Division Captain- Retsu Unohana
Leiutenant: Isane
5th Division Captain- Sousuke Aizen-
Leiutenant: Gin Inchimaru
6th Division Captains: Zeni and Eterna- Due in part to their efforts to protect Seireitei from their former captain, Zeni and Eterna were promoted to Captain once they demonstrated proficiency with their Bankai.
7th Division Captain- Argus Reskolen-
8th Division Captain- Shunsui Kyoraku
9th Division Captain- Luxord
10th Division Captain- Isshin Kurosaki- Isshin is considered an eccentric, as he took a living woman as his wife. As he still maintains his position, it makes for an... interesting relationship.
Leiutenant: Toushiro Hitsugaya
11th Division Captain-Kenpachi Zaraki-
Leiutenant: Yachiru Kusajishi
3rd Seat: Ikkaku Madarame
4th Seat: Renji Abarai
5th Seat: Yumichika
12th Division Captain- Mayuri Kurotsuchi
Leiutenant: Nemu Kurotsuchi
13th Division Captain- Jyuushiro Ukitake
Other Important NPCs:
Kisuke Urahara- Urahara runs a store offering shinigami goods in the human world. He is a former captain who "retired" to the human world.