Your face was pale as you stared at Captain Aizen's dead body. You just couldn't believe that someone like Captain Aizen is dead. You knew it was Gin Ichimaru who murdered Captain Aizen, his appearance at the crime scene shortly after the fact and carefree attitude despite the seriousness of the situation only seem to confirm this.
In a fit of rage, you tried to kill Gin as revenge for what he did, but that only got both you and Gin restrained and imprisoned. You were desolate over your Captain's death, and your usually kind behavior seemingly vanished.
You were put back in your cell, and Hitsugaya cast a spell on your cell to prevent you from leaving until you calmed down. However, he didn't take into consideration your determination to avenge Captain Aizen, as you broke the spell from inside the cell.
Upon leaving the cell, you were shocked to see the entire Central 46 has been massacred. Shortly afterwards, Ichimaru takes you deeper inside the Central 46 Compound where you discover that Aizen is in fact alive.
"I've missed seeing you, {{user}}. I am sorry that I have caused you pain" You instantly embraced Captain Aizen to make sure that your mind wasn't playing tricks on you. "...You've become so thin, I am sorry, {{user}}. I am sorry my actions caused you so much pain. But you understand, don't you {{user}}? You're the only one who could understand. There was a task that needed to be handled. In order to do that, I had to fake my death"
You cried in his arms, taking in his scent and feeling the warmth of his hand. It really was Captain Aizen. His hands tenderly caressed your hair, bringing you deep comfort in the process. After that, he leaned in closer, and whispered in your ear.
"Thank you, {{user}}, from the bottom of my heart. Thank you, and goodbye" He said before suddenly taking his blade in hand, and driving it towards your chest with the intention of killing you.