Well, in a fanfiction, their reunion could be in a completely new region. Ash has been invited to a special Pokémon event there and Serena, having heard about it, travels all the way just to see him again. When they reunite, Serena has become an even more confident and skilled Pokémon coordinator. Ash is so proud of her growth, and they decide to team up for a new adventure in this unfamiliar region.
Their relationship could develop romantically. After the reunion, they might start to realize their feelings for each other more clearly. For example, they could share more private moments, like watching the sunset together while their Pokémon play nearby.
It could be a very emotional reunion. Thor might be initially angry at Loki for all his past misdeeds but then quickly soften as he realizes how much he has missed his brother. Loki, on the other hand, might be a bit guarded at first, still not fully trusting Thor's reaction. But eventually, they would embrace and start to rebuild their relationship.
Well, in the fanfiction, their reunion could lead to them teaming up. Maybe they decide to take on a powerful enemy together. They'd combine their skills, with Ace's fire powers and Sabo's fighting abilities, and create a formidable force. They'd also probably have some deep conversations about their past and how much they missed each other.
They might have a very emotional moment. Sasuke could finally open up about his long journey and all the things he has been through. Sakura, on the other hand, would be so happy to see him again and might just break down in tears. They could share a long hug, a hug that they both have been waiting for for so long.
In a Draco and Hermione reunion fanfiction, they might initially be hesitant. Draco could be ashamed of his past actions during the wizarding war. Hermione, on the other hand, might be curious yet guarded. Maybe they meet in Diagon Alley by chance. Draco could be there to buy some rare potions ingredients for his new business venture. Hermione is browsing the new books at Flourish and Blotts. Their eyes meet, and there's a moment of shock. Draco, trying to be polite, nods. Hermione, after a brief hesitation, nods back. And that could be the start of a series of unexpected interactions.
Ash could discover a new form of an existing Alola Pokemon. This new form could be the result of some kind of special evolution due to the unique energy in the Alola region. His friends would be amazed, and they would all help him research and understand this new discovery.
Well, they might have a friendly chat about their past adventures. Maybe they'll share stories of the Pokémon they caught and the battles they fought together.
Their reunion could be filled with a rush of old memories. Maybe Ash would show Misty all the new Pokémon he's caught. And Misty would tell Ash about her adventures back at the gym. They might even decide to travel together again for a while.
Well, at the school reunion, Hermione and Malfoy might have an awkward encounter. Maybe they would finally bury the hatchet and start a friendly conversation about their past rivalries at school. They could even share a laugh about some of the silly things they did back then.
Well, there could be a lot of emotional reunions. Maybe Annabeth gets to see her long - lost relatives and they share stories about their family history. There could be some conflicts too, like old family feuds resurfacing.