Ichigo might go into a state of self - reflection. He would wonder if there is something he has unknowingly done to cause this. He would try to analyze his past actions during the time travel. He might isolate himself from his so - called betrayers for a while to think things through. But ultimately, he would not give up on his friends. He would strive to find a way to regain their trust and set things right, because he values his relationships with them deeply.
Ichigo would also experience a period of sadness. He values his relationships, and when one is broken through betrayal, it would hurt him deeply. He might isolate himself for a while, brooding over what happened. But ultimately, he would use this experience to become stronger. He'd learn from it and be more cautious in future relationships, while still maintaining his core values of loyalty and trust.
One possibility could be that during his time travel, Ichigo discovers that his friends or allies in the future have turned against him for some reason. Maybe they believe he has become too powerful and is a threat. So they plot to betray him, which sets up a conflict where Ichigo has to fight against those he once considered friends while also trying to figure out a way to fix the timeline.
First, you need to have a clear understanding of Ichigo's character. Know his strengths, weaknesses, and what makes him tick. Then, when it comes to the time travel aspect, establish the rules early on. For the betrayal part, create a believable reason for why someone would betray Ichigo. It could be related to power, love, or some hidden agenda. Make sure the plot progresses logically and that Ichigo's reactions are in line with his character. Also, don't be afraid to add some twists and turns to keep the readers interested.
Ichigo's character often develops a greater sense of purpose. For example, if he travels back in time to prevent a disaster, he realizes the importance of his actions on a much larger scale. He may also become more self - reliant as he has to navigate the past without the full support system he had in his original time. His relationships with other characters can also change. If he meets his friends at an earlier stage, he might see them in a new light and form different bonds.
One possibility could be that Ichigo is betrayed by a close friend during his time - traveling adventures. Maybe this friend is jealous of Ichigo's powers or has been influenced by an enemy. This betrayal could lead Ichigo to question his relationships and his purpose in the time - traveling journey. He might then have to find a way to overcome this betrayal and still fulfill whatever mission he has in the different time periods.
At the start, Ichigo would be defiant. He would not show any fear in front of Aizen. He might taunt Aizen, trying to get him to reveal his true intentions. As time goes on, he would start to feel a sense of isolation, but this would only strengthen his resolve. He would use his inner Hollow powers more freely, as he has no other option. He would also be constantly thinking about ways to turn the tables on Aizen and escape, and would be ready to take on any challenges that come his way during his captivity.
In these fanfictions, Ichigo often starts as a more naive character in the past. But as he experiences events again with his new knowledge as the King of Hollows, he becomes more confident. For example, when facing early enemies, he uses his Hollow powers more effectively. His understanding of the complex relationships between different spiritual beings also deepens. He realizes that not all Hollows are simply evil and that there are more shades of gray in the world of Soul Reapers, Quincies, and Hollows.
Their relationship could deepen as they rely on each other during the time - travel adventures. They face many challenges together, like dealing with time paradoxes. This shared experience might make them closer friends or even something more.
Ichigo's character could develop a greater sense of patience. In different time periods, he might have to wait for the right moment to act or to understand the events around him. For example, if he travels to a more primitive time in the Soul Society, things may not happen as quickly as he's used to in his own time. This would force him to be more patient. He could also become more empathetic as he experiences the hardships of different eras and the people in them.
Some characters might be shocked at first. For example, her close male friends might feel a bit betrayed or confused, especially if they had a certain type of relationship with her when they thought she was a boy. But then they could come to accept and support her.