In the fanfiction, Ichigo could use his time - control to relive important moments in his life. He might go back to his first encounter with Rukia and change the way he reacted, which could have a butterfly effect on their relationship and the events that followed. He could also use it to explore different timelines. For instance, what would have happened if he had accepted the Hollow within him earlier? Or if he had never become a Soul Reaper? These different timelines could present new challenges and opportunities for Ichigo to grow as a character.
Perhaps Ichigo discovers his time - control ability while in a desperate battle. He suddenly realizes he can slow down time around him, giving him an edge over his opponents. This could lead to a series of battles where he has to learn to control this new power precisely. He might accidentally send himself into the future at some point and see a desolate world. Then he has to figure out how to prevent that future from happening. Maybe he teams up with some of his friends who also have unique powers, and together they use his time - control ability to solve a mystery that has been plaguing the Soul Reaper world for ages.
One possible plotline could be Bella using her mind - control ability to solve mysteries. She could get into the minds of suspects and find out the truth behind crimes or secrets. Another plotline might be her using it to protect her loved ones. For example, she could control the minds of attackers to make them stop harming her family or friends.
A common plotline could be that the pregnancy changes their characters. Ichigo might become more protective and responsible, while Rukia could be more nurturing. They may also have to deal with their own insecurities. Rukia might worry about being a good mother, considering her past and her nature as a Soul Reaper. And Ichigo could be concerned about providing for the family. The story could also explore how their powers and abilities are affected by the pregnancy, if at all.
A powerful rogue Soul Reaper could be an antagonist. This Soul Reaper might be jealous of Ichigo's new - found time - control ability and try to steal it for his own dark purposes. Maybe he wants to use it to rewrite history in his favor, eliminating all those who opposed him in the past. Another potential antagonist could be an ancient and evil entity that has been trapped in a time - locked dimension. Ichigo's use of time - control accidentally releases this entity, and it now wants to use Ichigo's power to break free completely and wreak havoc on the world. There could also be a group of Quincy who see Ichigo's power as a threat to their own plans of taking over the spiritual world. They try to stop him from using his time - control ability by any means necessary.
Another plotline could be that Ichigo is transformed into a different form due to the Mugetsu influence in the fairy tale world. He then has to learn to control this new form while also trying to break a curse that has been placed on the fairy tale world. This would involve him interacting with different fairy tale characters, some of whom might be initially distrustful of him, but as he proves himself, they become his allies.
A possible plotline could involve Fem Ichigo being a huge Harry Potter fan in her world, and she writes fanfiction about it. But then, magically, the characters from her fanfiction come to life in her world. Harry and his friends are confused about this new world, and Fem Ichigo has to help them adjust while also trying to figure out how this happened. They might also encounter villains from both universes who team up, forcing them to work together to defeat the combined threat.
One possible plotline is that Ichigo discovers Nejibana in a hidden location. Maybe it's in an ancient temple in the Soul Society that has been long forgotten. He senses its power and decides to take it, not fully aware of what it can do. Then he has to figure out how to use it while being chased by those who don't want him to have such a powerful weapon.
One plotline could be that they are kidnapped by a common enemy who wants to use their powers for some evil purpose. Maybe this enemy plans to extract the Mew Aqua from Ichigo and use Kisshu's alien technology.
A plotline could be that a group of rogue ninjas use mind control on some of the female characters in Naruto. The 'lemons' here, if not taken in an inappropriate way, could mean that these female characters are in a tough spot where they are being used against their will. The male characters then have to rescue them and break the mind control. It could also explore the relationships between the characters as they face this difficult situation together.
One interesting plotline could be Izuku using his time - control ability to go back in time and prevent a major villain attack before it even starts. This would show his heroic nature and how he can change the course of events for the better.
One possible plotline could be that they go on a mission together and during the mission, they discover a new power within themselves. Another could be that they have a friendly rivalry which turns into a deeper understanding and friendship as they face various challenges in the Soul Society.