Another plot could involve Ichigo accidentally traveling to an alternate dimension's academy. Here, the rules and the people are slightly different. He has to figure out how to get back to his own academy while also dealing with the challenges in this new place, like making new friends and facing new threats.
Perhaps Ichigo could travel to a future version of the academy that has been taken over by a powerful enemy. He then has to find a way to go back in time and prevent this from happening in the first place. He could also learn new powers in this future academy that he brings back with him to his own time.
One interesting plot could be the main character going back in time and using modern knowledge to change the outcome of some key battles in the Naruto universe. For example, they could introduce new jutsu combinations or strategies.
They could time travel to a period in Soul Society's history when there was a great war against a powerful enemy. Ichigo's modern fighting skills and Rukia's knowledge of Soul Society could be combined to change the outcome of the war. Or perhaps they travel to a time when Hollowfication was first discovered. They might be able to prevent some of the tragedies that occurred as a result of it. Also, they could time travel to an era where Quincy were more powerful and had a different relationship with the Soul Reapers. This could lead to new alliances or conflicts in the story.
A possible plot could be that in the 'naruto time travel academy fanfic', Naruto goes back and discovers a hidden conspiracy within the academy that was overlooked in the original timeline. He then teams up with his younger self (sort of a mind -meld situation) and some of his friends to expose the conspiracy and save the academy from an unseen threat. This would involve a lot of sneaking around, using his future knowledge of the academy's layout and the people in it.
Well, a common plot could be Hollow Ichigo time traveling to key battles in the Bleach universe. For instance, he could go back to the fight between Ichigo and Aizen. He might interfere in the battle in unexpected ways, either helping Ichigo more than he should or causing chaos. Or he could time travel to when the Hollows first emerged and try to change the nature of Hollows from the very beginning. This could have a huge impact on the entire Bleach world and its power balance.
One idea could be a new student arriving at Adventure Time Academy who has a mysterious power that no one has seen before. This new character could disrupt the existing social dynamics among Finn, Jake, and their friends.
Maybe fem Ichigo has a different set of powers compared to Ichigo. In the fanfiction, they could train together to combine their powers in a unique way. For example, her powers might be more focused on defense while Ichigo's are on offense, and they learn to complement each other. This could lead to some interesting character development as they overcome their differences and work towards a common goal.
The exploration of different timelines is really engaging. In 'godlike ichigo time travel fanfiction', Ichigo may visit a timeline where the Soul Society has fallen. His godlike powers then give him the ability to try and restore it. Also, his interactions with past versions of himself can be really thought - provoking. Does he try to change his past self? Or does he let things be? These are all interesting plot elements.
One plot idea could be that Ichigo goes back in time to the moment before a major battle in the Soul Society arc. He uses his knowledge of the future to prevent certain casualties and change the course of the battle in a more favorable way for his side. Another idea is that he travels back to his own childhood and tries to understand his powers better from an earlier age, which could lead to him becoming even stronger in the present. Or perhaps he goes back to a time when the Hollows first started emerging in large numbers and tries to find the root cause of their sudden increase, which could potentially change the whole history of the Soul Reaper - Hollow conflict.
One idea could be Ichigo struggling to control his new vampire instincts while still trying to protect his friends. He might have to hide his vampiric nature from his family, which adds a layer of secrecy and tension.
One idea could be Ichigo having to face new and more powerful enemies in his resurrected form. Maybe he discovers new powers that come with this resurrection and has to learn to control them quickly to save his friends.