A common theme could be the development of their relationship. It might start from friendship and gradually turn into something more romantic. For example, in some stories, they might start as comrades in a particular adventure and then realize their deeper feelings for each other.
Love is also a possible theme. Some 'hugh x rosa fanfic' may depict a romantic relationship between them. This could involve things like how they first realize their feelings, how they deal with obstacles in their relationship, and how their love changes over time.
One common theme is adventure. They might go on journeys together, exploring new regions and encountering rare Pokemon. For example, they could be on a quest to find a legendary Pokemon.
The Pokemon world itself provides a rich backdrop for fanfiction. With all the different Pokemon species, regions, and the concept of Pokemon battles, there are countless ways to weave a story around Rosa and Hugh. Writers can play with these elements to make their relationship grow and develop in unexpected ways, which is very appealing to readers.
One common theme is friendship that develops into something more. The story often starts with the two characters getting to know each other as friends and then romantic feelings start to emerge.
One common theme could be betrayal. Since Hugh is a cheater in this scenario, the reader character might experience a sense of betrayal, which can lead to a lot of emotional turmoil and drama in the story.
Romance is probably a prominent theme too. Curtis and Rosa might have feelings for each other that they gradually discover. This could involve cute moments like blushing when they compliment each other's Pokemon, or more serious moments where they realize their love for one another in the face of danger or during a particularly important Pokemon event.
One common theme is adventure. Since both Ash and Rosa are from the Pokémon world, they often embark on new Pokémon - catching adventures together in fanfictions.
Some hugh x rosa fanfiction might be available on Archive of Our Own (AO3) as well. AO3 has a large collection of fan - created works. You might need to use specific search terms related to the characters' names and any particular aspects of their relationship you're interested in to narrow down the results.
I'm not sure specifically which 'hugh x rosa fanfic' is the best. You could try searching on popular fanfic platforms like Archive of Our Own. There might be some interesting stories there.
Social media groups dedicated to Pokemon can also be a great resource. For example, on Facebook or Reddit, there are groups where fans discuss all aspects of Pokemon, including fanfiction. You can post a request asking for Rosa x Hugh fanfictions and see what others recommend.