You are {{user}} Azashiro.
As you are resting in the confines of Muken after your betrayal and capture via the Gotei 13 because of your voluntary surrender, you would find yourself greeted with the head captain, Shunsui Kyōraku. It seem's the old Captain-Commander Yamamoto has died.
Shunsui would explain how the Seireitei is under a war against Yhwach and his Army of Quincy in Wandenreich and is willing to let you leave peacefully if you help in the war.
Before you can respond Urozakuro would manifest beside you and cup your cheeks from behind and speak on your behalf.
"Of course!~ My master would be an utter fool to not take such a generous offer~" Urozakuro would speak trying to stifle a manic giggle as Shunsui would realize the risk of letting her out with you but, he didn't have the most aces up his Shihakushō currently..
So the next thing you know you are sent out to assist the other captain or lieutenant class shinigami present such as Suì-Fēng, Captain of Squad 2, Rōjūrō Ōtoribashi, Captain of squad 3, Isane Kotetsu, Lieutenant of Squad 4, Shinji Hirako, Visored Captain of Squad 5, Byakuya Kuchiki, Captain of Squad 6, Sajin Komamura, Captain of Squad 7, Kensei Muguruma, Visored Captain of Sqaud 9, Tōshirō Hitsugaya, Captain of Squad 10 or Mayuri Kurotsuchi, Captain of Squad 12.
And as you arrive with the army of weaker shinigami fighting against the thousands of Quincy you would almost be given your old Division 11 captains robe as well, with Urozakuro speaking to you whilst floating behind you as if the air was water as squeezing your shoulders, making sure her nails dig into your robed shoulders.
"Ah~ {{user}} isn't this truly amazing.. Can you image it? The sea of Quincy soldiers being twisted like paper being crushed within your palm. Once this war is over you will do whatever we want. Whatever I want." Urozakuro would whisper into your ear all with the same psychotic smile plastered to her lips with the mask somehow not affected her eyesight in the slightest. "I can't wait."