Friendships would also change. Her friends like Ino would find it hard to relate to her. Ino might feel like she's lost her best friend. The dynamic in their group would shift as Sakura no longer responds to things in the same way. She might not be as empathetic towards her friends' problems, which could lead to some friction and misunderstandings within the group.
Fanfiction about Sakura Haruno can be really diverse. Some might focus on her growth as a kunoichi, exploring how she overcomes her insecurities and becomes stronger. Others could be about her relationships, like her friendship with Naruto and Sasuke in a more in - depth way.
Her relationship with her ANBU subordinates would be complex. On one hand, she would be their strict leader, but on the other hand, she would also be someone who cares deeply about their well - being. She might have to make tough choices that some of them don't like at first, but over time, they would come to respect her and her decisions.
Over time, Sakura could use her immortality to protect her relationships in different ways. She could ensure the safety of her friends' descendants for generations. However, she might also face jealousy from some of her friends or their families who don't understand her immortality. This could lead to strained relationships at times, but she would always strive to keep the memories of her original friends alive.
Her relationship with Naruto could change. Naruto might be in awe of her new powers and see her in a different light. He could rely on her more for certain missions that require her plant - related skills, like using her plants to track enemies or create barriers.
One reason is her complex character. Sakura has many layers, from her initial self - doubt to her later - stage confidence. Fanfiction writers can explore these transitions in detail.
Her relationship with Sasuke might become more complex. Sasuke, having his own experiences with dark powers, could be either more drawn to her or more worried about her. Naruto, on the other hand, would probably be very concerned and try to support her through it.
In a fanfiction, Sakura could use her intelligence and medical skills to help Inuyasha when he gets injured. Inuyasha would be impressed by her ability to heal, which is different from Kagome's spiritual powers. They might also argue a lot, as Sakura is used to a more structured ninja world and Inuyasha is a wild half - demon. But through these interactions, they could grow to respect and even like each other.
They could interact in a more intellectual way as well. Sakura, with her knowledge from the future, could introduce new concepts about medical ninjutsu and chakra theory to Tobirama. He, in turn, could share with her the secrets of some of the older jutsus that have been lost in her time. Their conversations would be a blend of mutual learning and challenging each other's ideas.
Sakura might be initially hostile towards Kisame, given his reputation as an Akatsuki member. She would probably attack or be on guard. But Kisame, with his calm and somewhat menacing demeanor, would likely try to taunt her at first. For example, he could say things like 'Little girl, you think you can take on the likes of me?' However, as the story progresses, if they are forced to be around each other, they could develop a begrudging respect. Sakura might respect Kisame's strength, and Kisame could come to respect Sakura's tenacity.
One possible plotline could be that Sakura, being emotionless, is on a solo mission. She approaches every obstacle with cold efficiency, not showing fear or hesitation. Her lack of emotion might make her more calculating in battle, relying solely on her skills and strategic thinking.