There could be Harry and Ron. They might be initially skeptical of Hermione's newfound dragon - taming skills but later become her biggest supporters. They could also get involved in her adventures, like helping her find a suitable place to keep the dragons she tames.
Well, the plot could involve Hermione secretly learning to become a dragon animagus. She might struggle with the transformation at first, having to hide it from her friends. Then perhaps she uses her new form to protect Hogwarts from a new dark threat, flying over the castle as a dragon and scaring off the bad guys.
AO3 is probably your best bet. It has a well - organized tagging system. So, if you search for 'Harry Dragon' and 'Hermione' tags, you're likely to find what you're looking for. Some fanfics might be part of a larger series or have spin - offs. You can explore the related works section on AO3 once you find a fic that seems relevant. Also, check the comments on these fics as other readers might recommend similar stories.
Power and control are also common themes. Dragons are powerful creatures, so when Hermione is associated with them, the fanfictions often deal with how she manages this new power. It could be about her learning to control her dragon - like instincts or using the power for good in the wizarding world. Additionally, acceptance is a big theme. Hermione has to come to terms with being different, and the wizarding community around her has to accept this new version of her as well.
One possible plotline could be Hermione discovers a hidden dragon lair and forms a bond with a young dragon. She then has to keep it a secret from Hogwarts faculty while training the dragon to fly and perform tasks. Another could be that she is chosen by an ancient dragon-riding order to help save the wizarding world from a dark force that only a dragon rider can defeat.
The fanfiction can be interesting because it combines two beloved characters in a very different way. Harry as a dragon adds an element of mystery and magic in a different sense. It could explore themes like friendship in a new light. Maybe Harry has to protect Hermione in a more dragon - like way, which changes the dynamic of their relationship. It also gives room for creative world - building, like how the wizarding world reacts to a dragon - Harry.
One possibility could be that Hermione moves away to protect the dragon. Maybe she discovers some dark forces are after the dragon for its magical properties, and by moving away with it, she hopes to keep it safe in a secluded location. She might have to face many challenges during this journey, like finding a suitable place for the dragon and dealing with those who oppose her decision.
One interesting plotline could be Hermione taming a particularly wild and powerful dragon. Maybe it's a dragon that has been causing chaos in the wizarding world, and Hermione's unique skills and knowledge help her to subdue it and form a bond with it.
There's a fanfic titled 'Hermione, the Dragon Whisperer'. In this one, Hermione's unique ability to communicate with dragons leads her on a journey across magical lands. It delves into her character development as she uses her intelligence and new - found gift to make allies among the dragon clans. It's a really engaging read with detailed descriptions of the dragon habitats and their behaviors.
The main antagonist could be some dark wizards who want to use the dragon for their evil purposes. They might be after the dragon's scales, which are valuable in making powerful dark magic items, or its fire, which can be harnessed for destruction. They would oppose Hermione's attempt to move the dragon away as it would thwart their plans.