Kousei might become more confident in his emotions. After meeting Kaori again, he could be more open about his feelings towards her. For example, he might finally be able to tell her directly how much she means to him. Kaori, on the other hand, could develop into a more independent person. She may have had many experiences during their time apart that made her stronger. She might be more assertive in her relationship with Kousei, not just following his lead in music but also in their personal connection.
For Kousei, his character development could involve learning to balance his passion for music with his relationship with Kaori. He might have previously been all - consumed by music, but now he realizes the importance of having Kaori in his life. So he starts to manage his time better between practice, performances, and spending time with her. Kaori may develop a more positive outlook on life. If she had faced hardships during their separation, seeing Kousei again could remind her of the good things in life. She might start to see opportunities for growth and happiness, not just in her art but also in her relationship with Kousei and the people around her.
Maybe in the fanfiction, Kousei meets Kaori again at a music school. Kousei has become a teacher there and Kaori, who has regained her health, is enrolling as a student. Their reunion is filled with mixed emotions. Kousei is proud to see Kaori healthy and eager to pursue music again. They quickly become friends once more and start collaborating on music projects, with Kousei guiding Kaori to reach new heights in her musical journey.
Tsuna would likely develop a sense of wariness towards Xanxus. He might start to train harder to be able to stand up to Xanxus if he ever becomes a threat again. For Xanxus, he could start to see Tsuna as a more interesting opponent rather than just a nuisance. He might become more observant of Tsuna's growth, which could lead to a more complex relationship between them.
Bella might develop into a more confident and motherly figure. Since she's been through pregnancy before, she would be more prepared this time, but still face new challenges. Edward, on the other hand, could become more conflicted. He loves Bella and their unborn child, but is constantly worried about the dangers that lurk. Jacob, if he's still in the picture, might be a bit jealous at first but then come around to support them. He could also be a protector of the family in his own way.
In this fanfiction, the relationship between Team 7 and Anbu Kakashi could be a journey of mutual discovery. Kakashi would discover the unique qualities of each team member. For example, he might find Naruto's never - give - up attitude inspiring even in the harsh Anbu world. Sasuke's intense focus on revenge could remind him of some of the darker aspects of the Anbu. Sakura's growth as a kunoichi would make him proud. And Team 7 would learn about Kakashi's past in the Anbu, which would make them realize why he is the way he is. This would lead to a stronger bond between them, filled with understanding, respect, and a bit of mystery.
Villain Deku might start to question his villainous ways. Meeting Hero Deku could make him see the good in heroism. Hero Deku, on the other hand, could become more empathetic towards those who turn to villainy. He might realize that there are reasons behind it and not all villains are just 'evil' for the sake of it.
Starfire would likely become more in - tune with Earth's superhero culture. She might develop new fighting techniques by learning from the Young Justice members. For the Young Justice characters, they would gain a new perspective on alien cultures. For example, Robin might learn more about Tamaranian politics.
The relationship could start with curiosity. Naruto would be curious about Kite's skills and Kite about Naruto's strange ninja powers. Then they could become allies, fighting side by side.
One way the story could develop is through cooperation. The two Harrys could team up to solve a mystery or defeat a common enemy. They could combine their skills and resources, like one Harry being better at Potions and the other at Defense Against the Dark Arts.
At first, Ash might be in awe of Mew. He has heard so much about this rare and powerful Pokémon. Mew, on the other hand, would be curious about Ash's determination and his bond with his Pokémon. As they spend time together, Ash would start to learn from Mew's unique abilities and wisdom. Mew might show Ash how to communicate better with his Pokémon on a deeper level. Their relationship could develop into a sort of mentorship, with Mew guiding Ash in his Pokémon training journey.
The story could start with Naruto being in a strange place and suddenly seeing his other self. Then they would start to exchange words. It might develop into a battle at first as Naruto tries to figure out if this other self is a threat.