A common theme could be the struggle between Naruto's human side and the werewolf side if he's the werewolf. And how Hana deals with that. Another theme might be the forbidden love aspect, as their relationship might not be accepted in their world.
One common theme is the transformation. If Naruto is a werewolf, the process of him transforming and how Hana reacts to it can be a big part of the story. It could be scary for her at first, but then she might grow to understand it. Another theme is the idea of a pack. If there's a werewolf pack involved, Naruto's place in it and how that affects his relationship with Hana. Also, the theme of secrecy. They might have to keep Naruto's werewolf nature a secret, which can add a lot of drama and tension to the story.
One common theme is adventure. Since both Naruto and Hana are from the Naruto universe, they often go on adventures together. Another theme is growth. Their relationship helps them grow as characters.
One common theme is friendship. Naruto is known for his ability to make friends, and in these fanfictions, his relationships with Hana and Anko often revolve around the idea of building strong friendships. Another theme could be adventure. They might go on quests or face challenges together.
Romance is a very common theme. Since it's about Naruto and Hana Inuzuka, many fanfictions focus on their relationship, how they fall in love and deal with their feelings.
One common theme is the exploration of an unlikely relationship. Since Naruto has his own set of relationships in the original story, this pairing is different and fanfictions often focus on how they come together. Another theme is family acceptance. Hana comes from the Inuzuka clan, so how her family reacts to her relationship with Naruto is often explored. Also, friendship - as they start from being friends and how that friendship evolves into more is a popular theme.
Common themes include the exploration of identity. Naruto, who is used to being a ninja, may struggle with a new identity if he has werewolf - like traits. Another theme is the battle between good and evil, where werewolves could be seen as either. And cooperation is also a theme. Naruto may have to cooperate with werewolves to face a common threat, which is a departure from his normal ninja battles.
One common theme is friendship. Since Naruto is all about making bonds, 'hana x naruto fanfic' often explores how Hana and Naruto become friends and support each other. For example, they might team up to face a common enemy in the village.
Adventure is another theme. They might go on missions together, like in 'The Great Adventure of Naruto and Hana' fanfic. Here, they travel to different lands in the Naruto universe, facing various enemies and obstacles, all while their relationship evolves. This kind of adventure theme adds excitement to the story.
One common theme is friendship. Since Naruto is known for his ability to make friends, fanfictions often explore his friendship with Hana. They might go through tough times together and strengthen their bond.
One common theme is friendship. Since Naruto is all about bonds, these three characters might be depicted forming unique friendships. For example, they could support each other through difficult missions.
I'm not sure of specific werewolf Naruto x Hana fanfiction off the top of my head. But usually, in these types of crossovers, the author might explore how Naruto's character traits would interact with the werewolf elements and his relationship with Hana. You could also try looking on Tumblr. There are often fanfic recs (recommendations) on Tumblr blogs dedicated to Naruto fanfiction.