Aizen ended up being confined and his powers were controlled. He was no longer a threat. This conclusion came after a long and intense battle, showing that justice prevailed in the Bleach universe.
One interesting 'Bleach Female Aizen Fanfiction' could be where she has to navigate the complex power structure in Soul Society differently from the male Aizen. Maybe she uses her charm more subtly to gain allies. Another aspect could be how her relationships with other characters, like Ichigo, would change. Since she's female, the dynamic might be more of a mentorship or a different kind of rivalry.
He might become more empathetic. Seeing the past versions of characters he once used or manipulated could make him question his own motives. He could start to value relationships more, rather than just seeing people as pawns in his grand scheme. For example, he might try to protect characters he previously endangered during his time - traveling adventures.
A popular trope in 'Bleach Female Aizen Fanfiction' is the 'Gender - Bending Consequences'. Since she's female instead of male, how does this change the power dynamics in Soul Society? Also, the 'Hidden Agenda' trope is often used. As Aizen, she's always scheming, but as a female, her hidden agenda might be related to issues like gender equality in the spirit world. And there's the 'Outcast' trope, where she's treated differently because she's a female with such great power.
In my opinion, both have their merits. The anime brings the characters to life with animation and sound, but the manga allows for more imagination and detail in the panels. It really comes down to what you value more in your entertainment.
One interesting plot could be Aizen traveling back in time to prevent his own downfall. He might use his knowledge of future events to outwit his enemies before they even become a threat. For example, he could manipulate the events that led to his discovery by the Soul Society, thus ensuring his continued rise to power undetected.
Yes, there are likely some fanfics with this concept. Fanfic writers often come up with unique and sometimes out - of - the - box ideas. However, this goes against the original storyline of Bleach where there is no such relation between them in the official canon.
One possible plot could be that Ichigo is somehow tricked by Aizen. Maybe Aizen convinces Ichigo that by joining him, he can gain greater power to protect his friends in a different way. Ichigo, being naive in some aspects, might fall for this and start following Aizen's lead. This would lead to a huge shift in the power dynamics in the Bleach universe as Ichigo is a very powerful character.
The Soul Reapers in the Soul Society would see Ichigo as a major threat. They would likely mobilize their forces to either capture or eliminate him. Captains like Byakuya would be disappointed as he had come to respect Ichigo to some extent, and now would see him as a traitor.