The Gotei 13 form an integral part of theThousand-Year Blood War Arc inBleach, as Kurosaki Ichigo fights alongside Soul Society's Captains to protect humans and spirits alike. Sousuke Aizen and his rebellion originate from within the ranks of the Gotei 13, sending the balance of power into disarray.
The Soul Society may be the basis of the afterlife, but it is by no means heavenly, so the Gotei 13 was established to protect the innocent and keep the peace between realms. 26 Captains and vice-captains make up this force, each with a specialized skill acquired from training at the Shin'ō Academy. Each Division supervises a specific element of this military task force, which was founded by Genryūsai Shigekuni Yamamoto more than a millennium ago.
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The 1st Division holds the leader and commanding officers of the Gotei 13. The oldest member, Genryusai Shigekuni Yamamoto, spent more than a thousand years serving as Captain-Commander before relinquishing his title to Shunsui Kyoraku, who is capable of finding beauty and whimsy in everything.
In contrast to Shunsui's fun-loving nature is the ever-serious Soi Fon, leader of the 2nd Division, who trained under none other than the shape-shifting Yoruichi Shihouin. The 2nd Division is regularly linked to the Onmitsukidō (隠密機動), who are a Secret Special Ops Force that has been working within the Soul Society for many years.
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The 3rd Division specializes in communication and are responsible for maintaining the jigokuchou systems, headed by Roujuuro Otoribashi, aka Rose. The 4th Division, however, is full of healers, with Retsu Unohana stepping down into the vice-captain role and handing Isane
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