Perhaps Naruto is the one kidnapped. Sasuke, despite their past differences, feels a strong urge to save him. He teams up with some of their old friends like Sakura and Kakashi. During the rescue mission, they face various challenges that test their skills and their relationships, as they have to work together in a way they haven't in a long time.
One idea could be that Sasuke is kidnapped by an unknown enemy who wants to use his power against Naruto. Naruto then has to embark on a dangerous journey to rescue him. Along the way, he discovers some hidden secrets about Sasuke's past that make him more determined to save his friend.
Another plot could be that both Naruto and Sasuke are kidnapped together. They are trapped in a strange place where they have to rely on each other to escape. This situation forces them to confront their feelings for each other, whether it's friendship or something more complex, while also trying to find a way out of the clutches of their kidnappers.
One plot idea could be that Hinata is kidnapped by a rogue ninja group who wants to use her Byakugan for their own evil purposes. Naruto then embarks on a dangerous mission to rescue her, facing various challenges along the way.
One idea could be that Naruto is kidnapped by an enemy who wants to use his Nine - Tails power for their own evil plans. His friends then have to embark on a dangerous rescue mission, facing various traps and powerful foes along the way.
One possible plot idea could be that a love potion is accidentally consumed by Sasuke, leading to some comical and confusing situations as he tries to deal with his new - found feelings for Naruto. For example, he might find himself blushing around Naruto all the time and doing things out of character to be close to him.
One plot idea could be that a powerful enemy from a hidden village kidnaps fem Naruto because they believe she holds a special power that can tip the balance of power in their favor. They keep her in a hidden lair, and her friends embark on a dangerous rescue mission. Another could be that a group of rogue ninjas kidnaps her for ransom, thinking the Hidden Leaf will pay a great deal to get her back. They underestimate her ability to escape on her own though, leading to an interesting cat - and - mouse chase.
In some fanfiction scenarios, she could be kidnapped by a time - traveling villain who comes from a future where she has caused a major change that they don't like. So they go back in time to stop her by taking her out of the equation. Another idea is that she is kidnapped by a group of outcasts who think that by having her, they can finally gain acceptance in the ninja world. They hold her hostage and demand that the villages give them certain rights and privileges in exchange for her safe return.
One plot idea could be that Todoroki is kidnapped by a villain who wants to use his powerful quirk for their own evil plans. His friends then embark on a dangerous rescue mission. Another could be that it was a case of mistaken identity and Todoroki has to figure out how to escape while also dealing with the kidnappers' demands. Or perhaps Todoroki is kidnapped by a group who wants to study his unique genetic makeup related to his quirk.
Another plot could be that Rapunzel is kidnapped by a mysterious figure from her past that she doesn't remember. As she's held captive, she starts to have flashbacks of her early childhood and discovers secrets about her family. Meanwhile, Flynn Rider and the others are on a frantic search for her, and Rapunzel has to find a way to signal them while also dealing with the revelations about her past.
Well, perhaps Katara is kidnapped by a bounty hunter who has been hired by someone who has a vendetta against the Avatar's team. The kidnapper could be taking her to a far - off and desolate location. Then, Aang and the others have to track her down through various difficult terrains. Or, it could be that she's kidnapped by a group of dark benders who want to study her waterbending to find a way to corrupt it. They might keep her in an underground lair filled with all sorts of dark magic - like contraptions.
One idea could be the protagonist discovers a hidden power within themselves while being held captive by the demons. This power could be the key to their escape or a way to turn the demons' own plans against them.
One plot idea could be that Sasuke kidnaps someone he believes has information about a hidden enemy. He then has to deal with the moral implications as he realizes the person is innocent. Another could be a love - driven kidnapping, where Sasuke kidnaps someone he secretly loves but is too conflicted to show it in a normal way. And perhaps a third idea is that Sasuke is forced to kidnap someone under a mind - control spell and has to fight against the control to free the victim.