One possible storyline could be Naruto teaching Temari new ninja techniques. Since Naruto has his own unique and powerful skills like the Rasengan, he could pass on some of his knowledge to Temari. For example, he might show her how to infuse wind chakra in a different way into her weapons, enhancing their power. This could lead to Temari developing new jutsus and becoming even stronger in combat.
Another aspect could be Naruto helping Temari with leadership skills. Naruto has grown to be a great leader in his village. He could share his experiences with Temari on how to handle different personalities within a team and make decisions that benefit the whole group. Maybe Temari is put in charge of a new mission team, and Naruto's guidance helps her lead them successfully.
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.
One possible storyline could be that they team up for a special mission that requires their unique skills. Naruto's Rasengan and his ability to connect with others, along with Temari's wind - based attacks and strategic mind, would make them a formidable duo.
It could also be due to false accusations. Perhaps an enemy ninja managed to frame them for a heinous crime. Like they were made to look as if they had conspired to assassinate an important figure from another village. This would lead to their banishment as their own villages would want to avoid a full - scale war because of their actions.
Perhaps in a fanfiction, Naruto discovers some dark secrets about his parents that shatter his world view and send him into a depressive state. Temari, being a friend, comes to Konoha on a diplomatic mission and finds Naruto in this state. She tries to help him by sharing her own experiences of dealing with difficult family situations. However, the more she tries, the more she realizes how deep Naruto's pain is and she herself starts to feel a bit depressed due to her inability to fully help him.
One possible storyline could be that Naruto has to go on a dangerous mission that might cost him his life. Temari is in love with him but can't stop him. She's sad because she might lose him. Another could be that there are political tensions between Konoha and Suna again, and they are forced apart due to their loyalty to their respective villages. They're sad as they have to give up their relationship.
One possible storyline could be that in a mission gone wrong, Kurenai accidentally uses a jutsu that ends up hurting Naruto. Maybe she misjudges the situation and her genjutsu affects Naruto in an unexpected and harmful way.
One possible storyline could be that Naruto's red hair is a sign of some special power or lineage. Maybe it links him to a long - forgotten clan. In this fanfiction, the village might initially be suspicious of him because of this strange hair color, but as he grows, he discovers that it gives him unique abilities like enhanced fire - based jutsu or the ability to communicate with certain mythical creatures associated with the color red in ninja lore.
Perhaps in this fanfiction, Naruto's death was sudden and unexpected. His friends are left in shock and disbelief. Sakura, Sasuke, and the others struggle to come to terms with it. They might be the ones in charge of arranging the funeral. Sasuke could be feeling a great deal of guilt, thinking he should have been there to protect Naruto. And the funeral could be a time for them to finally start to heal, while also commemorating Naruto's life and all he did for them.
It could be that Naruto and Temari run away because of a misunderstanding. The village leaders think they are traitors. But in reality, they are on a secret mission to stop an evil force that is about to attack both of their villages. They run away to gather allies and resources in secret, and during their journey, they face many difficulties that test their friendship and determination.
It could be that Temari accidentally causes a major disaster during a joint mission with Konoha. The Konoha elders, fearing public outcry, banish her. Naruto, who has befriended Temari, doesn't believe she did it on purpose. He then sets out to uncover the real cause of the disaster, which may involve a hidden enemy who framed Temari. Along the way, he has to convince his village that banishing Temari was a wrong decision.