The Soul Reapers would be very confused at first. They are used to Aizen being a certain way, and Naruto's different personality would be a shock. Ichigo might be curious and see Naruto - Aizen as an ally against the common enemies. Orihime could be one of the first to trust Naruto - Aizen because of his kind - hearted nature that she would sense. And the Espadas would probably be on high alert, not knowing what to expect from this new Aizen.
Well, in a fanfiction scenario, Naruto might kill Aizen if he manages to use his shadow clones to outwit Aizen's illusions. Naruto could also use his Sage Mode to sense Aizen's reiatsu and counter his attacks. Maybe he combines his Rasengan with some new jutsu he's developed specifically to deal with Aizen's powers.
The storyline could start with Naruto somehow ending up in Aizen's world. At first, he would be confused and on guard. But as he gets to know Aizen, he might see some potential in him. Naruto would try to change Aizen from the inside. Aizen, on the other hand, might see Naruto as a useful tool or an interesting experiment.
I recommend the book "Death's Blue Dye" to you. It is a light novel by the author, Flying Tiger. The plot of this novel revolved around Aizen, who had inherited the max level account at the beginning of the novel. Aizen had attracted much attention because of his powerful abilities and great ambitions. The story was very exciting. I hope you like this fairy's recommendation. Muah ~😗
First, understand Aizen's character traits thoroughly. He's manipulative, intelligent, and power - hungry. In a crossover, you need to show how these traits interact with the new world. For example, if crossing with 'Game of Thrones', his manipulation would be a great asset. He could play the different houses against each other. Second, give him clear goals. If it's a crossover with 'One Piece', his goal could be to find the One Piece and use it to rule the new world. Third, let his actions have consequences. If he makes a wrong move in a world like 'Naruto', the ninja might catch on to his schemes and fight back.
In some of these fanfictions, the authors might take a more creative approach and create a completely new storyline for them. Maybe they are forced to team up against a new, powerful enemy that neither could face alone. This could lead to character development as they learn to understand and trust each other more, despite their initial differences.
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.
Makoto Aizen was indeed a fictional character in Ultraman and not a real human. In the storyline of Ultraman, Aizen Makoto was an Ultraman from another world. He worked with other Ultramen to protect the Earth from threats from other planets. Even though Aizen Makoto wasn't a real human, he still played an important role in the story.
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.
In a fanfic, Ichigo and Rukia's relationship could be developed by introducing emotional arcs. Maybe Rukia has a secret she's been keeping from Ichigo, and when it's revealed, it causes a rift between them. But through their shared love for their friends and the Soul Society, they eventually overcome it. Aizen could be the catalyst for this. His actions could force Rukia to reveal her secret. Meanwhile, Aizen's relationship with them could be developed by showing his envy or admiration for their relationship. He could try to break them apart because he sees their bond as a threat to his own plans, or he could be secretly longing for a relationship like theirs, which adds a new layer of complexity to his character.