One possible plot could be that Itachi, perhaps on a mission for the Akatsuki that is not fully known to the other members, sees Temari as a valuable asset. He kidnaps her to extract information about Suna's military strategies. Temari, being a strong - willed kunoichi, tries to resist and escape at every opportunity. Naruto, upon hearing of this, might set out to rescue her, seeing Temari as an ally and friend. This could lead to an interesting dynamic where Naruto has to face off against Itachi's powerful jutsu and outwit him to save Temari.
Naruto could find out through a messenger from Suna. Since Temari is an important figure in Suna, when she is kidnapped, Suna would send word to Konoha asking for help. Naruto, being one of the more active and well - known shinobi in Konoha, would be informed of the situation.
Perhaps Itachi sees Naruto as a key to unlocking some hidden power or knowledge. He could be planning to train Naruto in some way, away from the influence of the village. This would be a strange turn of events considering their previous interactions.
Sasuke would likely be enraged. Naruto is his rival and also, in a way, his friend. He would immediately set out to find Naruto and confront Itachi. Sasuke has a strong sense of pride and would not let his brother get away with this.
Some disgruntled members of the Sand Village itself could be the kidnappers. Maybe they feel that Temari or her family has wronged them in some way. They could kidnap her in an act of revenge. This would add an interesting layer of complexity to the story as it would involve internal village politics and betrayal.
In the fanfiction, Naruto might comfort Temari by simply being there for her. He could offer her a friendly shoulder to lean on and listen to her problems without judgment.
Perhaps there are men from a rival village who are jealous of the Sand Village's growing power. They kidnap Temari in an attempt to demoralize the Sand ninjas. Temari, while being held captive, could befriend some of the lower - ranking members of the kidnappers and turn them against their leaders, creating an internal conflict within the kidnapper's group which could be used to her advantage for escape.
If Temari is feeling stressed about her role as a shinobi in diplomatic matters, Naruto could offer his own perspective. He might say 'I'm not always good at the political stuff either, but I've learned that being true to yourself and your village is the most important thing. You're doing great, and everyone can see your strength and determination.' This would boost Temari's confidence and comfort her in her role.
Yes, there are many non - adult Naruto and Temari fanfictions. You can look for them on popular fanfiction websites like FanFiction.net or Archive of Our Own. Just search for Naruto and Temari in the search bar and you'll get a whole list of stories.
Their relationship could develop as they get to know each other's families. Naruto introducing Temari to Iruka sensei and the other villagers, and Temari introducing Naruto to her brothers. Through these interactions, they see how well they fit into each other's lives and how their families accept them, which further cements their love for each other.