Common themes include the idea of changing the course of the Naruto story. With Naruto being related to Tobi in some way in these fanfictions, it can lead to different outcomes for the ninja world. For example, they could team up against a greater threat that wasn't in the original plot. There's also the theme of uncovering secrets, as Tobi has many secrets, and Naruto could be the key to revealing them all.
In tobi sakura fanfic, a major theme is discovery. This includes Sakura's discovery of Tobi's real self or Tobi's discovery of Sakura's hidden strengths. There is also the theme of cooperation. Since they usually have different skills and abilities, they need to cooperate to achieve common goals, which is often explored in these fanfics.
One common theme is power exploration. Since Tobi has unique powers, in crossovers, writers often explore how his powers compare and interact with the powers in the other universe. For example, in a crossover with the Dragon Ball universe, his stealth abilities might be pitted against the ki - sensing abilities of the Saiyans.
Well, in this fanfiction, it could be that Harry Potter has come across some sort of ancient magic or artifact that has changed him. Maybe this magic has a connection to Tobi's essence or the type of power that Tobi wields. Additionally, he might be trying to protect his friends in a different way. Tobi has his own way of safeguarding what he holds dear, which might seem appealing to Harry in a difficult situation. Or, there could be a prophecy or a hidden message that he has misinterpreted, leading him to believe that acting like Tobi is the right path to take.
The setting also plays a big role. Whether it's in the original Naruto universe or an alternate one. In some 'tobi x naruto fanfic', the authors create new locations or change the existing ones to fit their story. And of course, the character backstories are important. Tobi's mysterious past and Naruto's journey to become Hokage are often used to add depth to the plot.
Another theme is often the discovery of new magic or secrets. Since Tobi is an outsider in a way, he might stumble upon things that the regular Harry Potter characters haven't. This could be a hidden spell, a lost artifact, or a secret chamber. And this discovery then drives the plot forward as he has to deal with the consequences of it.
A very common theme is the clash of personalities. Tobi is often depicted as this somewhat unpredictable and shadowy figure, while Sakura is strong - willed and determined. So, their interactions are full of tension. Also, the theme of trust - building is quite prevalent. In many fanfics, Sakura has to learn to trust Tobi despite his mysterious nature.
A third theme could be growth. They both start from certain points in their characters and develop over the course of the fanfic. Tobi might become more serious or Zetsu might open up more, depending on the plot and how the author wants to develop their relationship.
One main theme is loyalty. Given their relationship in the Naruto series, fanfictions often explore how loyal they are to each other and their common goals.
One common theme is the exploration of identity. Since Tobi is often a mysterious character, a female Tobi in fanfiction might struggle with her true self while interacting with Naruto. Another theme is friendship or even a potential romantic relationship. Writers like to play with the idea of how two very different characters like Naruto and a female Tobi could form a bond.