The main characters are obviously Tobi and Deidara. Tobi is known for his somewhat comical and mysterious behavior. Deidara is an artist who uses his explosive art as a weapon. In the fanfiction, they are often the central focus of the story.
Well, if we go by the name, the main character is Tobi for sure. And as for the other part of the love story, it could be any of the Akatsuki members. It could be Konan, who has her own charm and powers. Or it could be someone like Kisame, though that would be a really strange pairing. But in fan - made stories, the possibilities are endless when it comes to pairing Tobi with an Akatsuki member.
Definitely Kakashi. Since he has a connection to both Naruto and Tobi (Obito), his presence can add a lot of depth. He can be the one who tries to bridge the gap between Naruto and Tobi, or he could be a source of conflict as he has his own history with Tobi.
Gray is another candidate. Gray's cool and collected demeanor could contrast with Tobi's more mysterious nature. They could get into arguments about the best way to handle a situation, like when facing a powerful enemy. Or, they could find common ground in their skills and work together to protect Fairy Tail from danger.
The main characters are clearly Tobi and Sakura. Tobi is the one doing the tying up, which implies he has some sort of agency in the story. Sakura, on the other hand, is the victim of this action, and she will likely be the one trying to either resist or escape from this situation.
Naruto would probably be one of the first to try and rescue Kakashi. He has a strong bond with Kakashi and would not stand by while his teacher is in danger.
Yes, there might be such fanfictions out there. Fanfiction writers often come up with creative and unique concepts like this. They might explore how Harry's new identity as the reincarnation of Tobi would change the story, his relationships, and his powers. It could lead to a whole new set of adventures and interactions within the fan - created universe.
Fanfiction should be a creative and positive space. 'Naruto tobi pedo fanfic' involves inappropriate and immoral themes. In the Naruto fandom, there are so many positive aspects like the story of friendship, growth, and ninja adventures that can be explored in fanfic, rather than this kind of disturbing content.
Perhaps an organization that is trying to steal Sakura's medical knowledge for their own evil purposes. They view Tobi as a threat because of his combat skills and the fem reader as a potential source of information about Sakura. So they send their agents to target all three of them.