Perhaps in the fanfiction, Toshiro and Isshin meet in a more peaceful setting. Toshiro has grown and matured, and he approaches Isshin with a newfound respect. They could start by just having a simple conversation, reminiscing about the past. As the story progresses, they might discover that they have more in common than they thought, and their relationship could develop into a mentor - mentee type of bond, with Isshin sharing his wisdom and experiences with Toshiro.
In this fanfiction, they might have a rematch of their previous battle. Maybe Toshiro has become stronger and wants to prove himself to Isshin this time.
It's possible that both characters grow in their spiritual powers. Their encounter could be a catalyst for their growth. Toshiro might learn new techniques from Isshin or vice versa. And in terms of their personalities, they could both become more open - minded. Toshiro could shed his previous rigidity and Isshin could become more trusting. Their relationship could go from one of suspicion or rivalry to one of mutual respect and friendship.
In this fanfiction, Mulan might show the matchmaker how much she has changed. She could prove that she is no longer the girl who was once nervous in front of the matchmaker. Maybe she would tell the matchmaker about her adventures in the army and how she has become more confident and strong.
In the fanfiction, Joseph might show Caesar how much he has changed since they last met. He could introduce Caesar to new friends or family members. And perhaps they would plan a new adventure together, exploring a mysterious place or facing a new enemy.
In this fanfiction, perhaps Luffy has become much stronger. He might show Shanks his new skills and powers. They could also talk about their adventures since they last met, like Luffy sharing his experiences on different islands.
Well, it depends on the context of the fanfiction. One possibility is that Bella has gained new powers or abilities since they last met. This could change the dynamic between her and the Cullens. She might show off her new skills, and the Cullens could be either impressed or a bit intimidated. Another scenario is that there's a new threat in town, and they have to team up again despite their past differences.
In fanfiction, when Peter Pan meets Wendy again, they might go on new adventures. Maybe they explore a new part of Neverland that was previously hidden. They could also meet new friends or face new enemies together.
Well, it's possible that Ash and Mewtwo team up in the fanfic. They could face a common enemy together. Mewtwo's incredible psychic powers combined with Ash's experience and determination would make them a formidable duo. And perhaps this encounter would change Ash's view on some things, like the true nature of Pokémon battles.
Perhaps in the fanfic, Ash has achieved a lot in his Pokémon journey, and Misty has also become a more skilled Pokémon trainer. When they meet again, they start to compare their experiences. Ash could show Misty his new and powerful Pokémon, and Misty could introduce Ash to some new training techniques she has learned. And then they decide to train together for a while to improve their skills even more.
In the fanfiction, Luffy might show Shanks how much he has grown. He could display his new Haki abilities and his stronger crew. Shanks would be proud of Luffy's progress.
Maybe they will have a friendly conversation, reminiscing about the past. Percy could share his new adventures, and Calypso might tell him how she has been since they last met.