A must - read is 'The Hybrid Werewolf - Vampire Bond'. In this fanfiction, there's a new kind of bond formed between a werewolf and a vampire that no one expected. It's full of twists and turns. The author does an amazing job of creating a believable relationship between the characters, and the description of the werewolf's powers and the vampire's allure is very vivid.
Love and forbidden relationships are very common. Since werewolves and vampires are often portrayed as enemies, their love is seen as taboo. Another theme is power struggles. Both species usually have different levels of power, and fanfictions often explore who is more dominant. Also, identity is a big one. Characters might struggle with their dual nature if they are a half - werewolf, half - vampire for example.
One idea could be that Naruto, as a werewolf, is initially distrusted by the village but Hinata, a vampire, sees his good heart. She helps him gain acceptance among the people. For example, she uses her vampire charm and diplomatic skills to convince the villagers that Naruto is not a threat.
The idea of fate also plays a big role. Some fanfictions depict the vampire and werewolf as fated lovers. Despite all the odds against them, they are meant to be together. It gives a sense of inevitability to their relationship. And then there's the theme of discovery. As they get to know each other, they also discover new things about themselves and their own species, which helps them bridge the gap between their two worlds.
One common theme is the struggle between two different natures. The vampire has its own set of powers and instincts, like a thirst for blood, and the werewolf has its own, like the change during the full moon. Their relationship often involves dealing with these differences.
Love is a very common theme. Often, a vampire and a werewolf will fall in love, which is against the norms of their respective societies. This creates a lot of conflict and drama.
One idea could be that Bella struggles to control her dual nature. Since she's a hybrid, she might have the speed and strength of a vampire and the heightened senses and connection to nature of a werewolf. For example, she could find it difficult to be around her human friends without accidentally revealing her super - human abilities. She may also face challenges within the werewolf and vampire communities as they might not fully accept her hybrid status.
First, you need to research the three elements well. Know the Naruto universe, the werewolf traits (like in Rosario Vampire), and how the different powers and cultures work. Then, come up with a unique plot that can combine these elements. For example, a plot where Naruto has to go to a school like in Rosario Vampire but it's full of werewolves and he has to use his ninja skills.
One common theme is the struggle against prejudice. Since werewolves and vampires are often depicted as enemies in traditional lore, their love is seen as something that goes against the norm. So they have to fight against the prejudice of their respective communities.
One idea could be a story about a character who is half - vampire and half - werewolf trying to find their place in the Twilight world. They could struggle with the conflicting natures of both species, like the vampire's need for blood and the werewolf's connection to the moon. Maybe they are shunned by both vampire and werewolf communities at first but then find a way to bring the two groups together.