Love and friendship are also common themes. Some stories explore the budding romance between the reader and Tobi, how they fall in love despite the challenges. Friendship is also there, like when the reader becomes Tobi's closest confidant. Additionally, there can be themes of redemption. If Tobi has done some bad things in the original story, the fanfiction might show how the reader helps him redeem himself.
One common theme is mystery. Tobi's character in Naruto is quite mysterious, so a lot of fanfictions play on that, with the reader trying to figure out Tobi's true identity while falling in love with him.
One common theme is discovery. Tobi discovers new things about the female reader and vice versa.
One common theme is redemption. Since Obito has a dark past in the Naruto series, in many fanfictions, the OC helps him find a path to redemption. Another theme is love against all odds. Their relationship often has to overcome obstacles like Obito's loyalty to his original goals or differences in their villages.
Another common theme might be the idea of secrecy and forbidden love. Given that yaoi involves same - sex relationships and in the Naruto world, which is more focused on traditional ninja relationships, their relationship could be seen as something that has to be hidden. This can add an element of tension and drama to the fanfiction. There could also be themes related to personal growth for both characters as they navigate their relationship.
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.
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.
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.
Discovery is a prevalent theme as well. The human discovers the world of the tobi kadachi, its behaviors, and its way of life. At the same time, the tobi kadachi discovers new things about humans, like their technology or their complex social structures. This mutual discovery adds depth to their relationship in the fanfic.
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.
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.