The entire shinobi alliance might get involved in the rescue. They would pool their resources, such as intelligence gathering and combat skills. Kakashi, who has a history with both Obito and Naruto, could play a crucial role in devising a strategy to free Naruto. He knows Obito's fighting style and could use that knowledge to their advantage.
Well, it could lead to a really intense situation. Naruto's friends would surely start a massive search for him. Sasuke might be especially driven to find Naruto as their bond is strong. They would probably trace Obito's whereabouts through his unique chakra signature or any clues he left behind.
Kakashi could use his Sharingan to analyze Obito's moves and find a weakness in his defenses. Since he has the Sharingan, he might be able to predict Obito's attacks and counter them effectively, eventually finding an opportunity to break free.
Superman could rescue her. He'd use his super - hearing to locate her and his super - strength to break into wherever Lex is keeping her.
Naruto would probably be really angry at first. He's a free - spirited person who doesn't like being forced into things. So he'd likely try to fight back right away, yelling at Sasuke about what he's doing.
Dumbledore could play a crucial role in her rescue. He has great wisdom and powerful magic. He might sense that Hermione is in danger through his magical connections. Then he could send some of the more skilled members of the Order of the Phoenix, like Sirius or Lupin, to find and rescue her. They would be able to use their combat skills and magic to overpower Rabastian.
His friends could come to the rescue. Bakugo, for instance, might use his explosive power to break into Toga's hideout. He's always been competitive with Deku, but he also cares about him deeply.
In fanfiction, Naruto and Obito could have a very complex relationship as brothers. Obito, with his troubled past, could be both a source of protection and a cause for worry for Naruto. Naruto's positive nature might initially be at odds with Obito's more jaded view, but over time, Naruto could help Obito see the good in the world again.
In a fanfiction where Naruto becomes Obito, it could be due to an outside force. For example, an ancient evil entity that wants to disrupt the balance of the ninja world. It targets Naruto and messes with his mind, implanting Obito - like thoughts and desires. Naruto would then struggle between his original self and this new, Obito - influenced persona, leading to many internal and external conflicts within the story.
Naruto could use her shadow clone jutsu. She could create multiple clones while Sasuke is distracted and then make her escape. Since she has a large amount of chakra, she can afford to create a lot of clones to confuse Sasuke.
Besides Obito, Sasuke could be a main character in this fanfiction. Sasuke, with his own journey of redemption and his understanding of power and the ninja world, could have an interesting dynamic with the reincarnated Obito. Also, Sakura might play a role. She could be the one who tries to heal the reincarnated Obito, both physically if he is injured during his new adventures and emotionally from the traumas of his past life.