Well, Kakashi might be involved. He has a lot of experience and his sharingan could be useful in detecting enemies and getting through difficult situations. Also, Gaara could potentially help. Since he has a connection with Naruto and his own strong abilities, he could be a great asset in the rescue mission.
In this kind of fanfiction, it's possible that some of the other jinchuriki could assist Naruto. For example, Killer Bee. He has his own unique skills and powers. And since they are all related in a way as jinchuriki, he might feel obliged to help. Also, the members of the Akatsuki who have a change of heart, like Itachi (if he's still alive in the context of the fanfiction), could also lend a hand due to his powerful abilities and his complex relationship with Naruto.
His friends from Konoha like Shikamaru and Choji could help. Shikamaru is smart and can come up with great strategies, while Choji can provide brute strength in battles.
It could be other villages as well. Since Naruto has made friends and allies from different villages during his adventures. For example, the Sand Village might send some of their ninja to help, considering Naruto's relationship with Gaara.
Sasuke could be a likely candidate. Despite their differences, Sasuke and Naruto have a deep connection. He might hear about Naruto's capture and come to his rescue, driven by their past friendship and the rivalry that also binds them.
Well, it could be that Naruto and his team discover Yugito has been captured by a powerful enemy. Naruto, with his never - give - up attitude, decides to lead the rescue mission. They might face various traps and strong opponents along the way, but Naruto's determination and new jutsu he has developed would help them in the end.
The rest of Team 7, like Sakura. She may not be as strong as Sasuke or Naruto, but she has a strong will. She'd be worried sick about Naruto and would do whatever she could to help in the rescue. Plus, she might be able to use her medical skills to treat Naruto if he's injured during the kidnapping situation.
His friends like Sakura, who is a medic - ninja, would surely be the first ones to try to help. She could use her medical knowledge and skills to diagnose Naruto's illness.
Shikamaru might be involved. He's very intelligent and could come up with a clever plan to outmaneuver the Akatsuki. His shadow - binding jutsu could also be used to immobilize some of the Akatsuki members.
Sasuke could be a likely candidate. Despite their complex relationship, Sasuke has a deep bond with Naruto. If he were to find out that Naruto was in such a predicament, he would likely rush to his aid, using his Sharingan and powerful ninja skills to take on whoever is guarding the cage.
His friends like Sasuke and Sakura might help. They have different skills that could be useful.
Sasuke could be one of the characters to help Naruto. Their combined powers have been shown to be very effective in the original series.
Sasuke would be a likely helper. Despite their past differences, they are comrades now and Sasuke has his own set of skills that could be useful in building a village, like his Sharingan - assisted precision in construction work.