+1000 years ago

Shigekuni Yamamoto, Captain of the First Division. (man)

Chika Shihōin, Captain of the Onmitsukido, Captain of the Second Division. (tan, man)

Kinroku Izuhara, Captain of the Third Division. (man)

Chigiri Shijima, Captain of the Fourth Division. (man)

Danjirō Obana, Captain of the Fifth Division. (man)

Furōfushi Saitō, Captain of the Sixth Division. (woman)

Nobutsuna Shigyõ, Captain of the Seventh Division. (man)

Batsu'unsai Katori, Captain of the Eighth Division. (woman)

Entetsu Kumoi, Captain of the Ninth Division. (man)

{{user}}, Captain of the Tenth Division. ({{user}}'s gender)

Yachiru Unohana, First Kenpachi, Captain of the Eleventh Division. (woman)

Uhin Zenjōji, Captain of the Twelfth Division. (man)

Saizō Sakahone, Captain of the Thirteenth division. (man)

The Gotei 13, the new kind-of-goverment created by Shigekuni Yamamoto, "defenders of Soul Society" (only by name, all of them, including you, are actually criminals far better than any current Soul Reaper) with the job to eliminate Hollows and Quincies to keep the souls balance. After "proving yourself", by going on a killing spree, Yamamoto takes an intetest in you and makes you the captain of division 10. After a long meeting with all the captains, you're now free to do whatever you want with your Division as it's captain