One possible storyline could be that in a major battle against a powerful enemy, Hinata jumps in front of Naruto to take a fatal blow meant for him. This could lead to Naruto going into a rage and unlocking a new level of power in his grief. He might then defeat the enemy single - handedly, vowing to carry on Hinata's will.
In a scenario where a curse or a powerful jutsu is unleashed, Hinata sacrifices herself to protect Naruto from it. Naruto is then left with the guilt and the responsibility to find a way to reverse the curse or jutsu. He might embark on a long and arduous journey, with Hinata's memory as his constant motivation.
In a fanfiction of Naruto dying of a sickness, perhaps the sickness is a result of overusing his chakra during a great battle. His body starts to break down, and he begins to experience weakness and fainting spells. Hinata, being his wife, is desperate to find a way to save him. She might turn to her own clan's secrets in hopes of finding a cure. At the same time, Naruto tries to train Boruto in what little time he has left, passing on his values and skills, while also coming to terms with the fact that he won't be there to see his son grow up fully.
One possible fanfiction plot could be during a village invasion. Naruto, with his unwavering sense of justice and his growing feelings for Hinata, shields her from an enemy's attack. He might get seriously injured, which then spurs Hinata to tap into her own hidden power to defend him in return. This kind of story can explore their bond deeper and show how they support each other in tough times.
One possible storyline could be that Naruto sacrifices himself in a final battle against a powerful enemy who is also after Sasuke. His death then makes Sasuke realize the true extent of Naruto's friendship and he decides to fully embrace the path of good. Another could be that Naruto uses some sort of ultimate jutsu that drains his life force in order to break the dark influence on Sasuke and bring him back to the village. And finally, Naruto might die protecting Sasuke from an attack that was meant for Sasuke, which shocks Sasuke into changing his ways.
Another storyline could be that Naruto and Hinata are trying to raise their family while Naruto is Hokage. Hinata might be pregnant, and Naruto is worried about balancing his duties as Hokage with being a good father. He could get advice from his old friends like Shikamaru on how to manage his time better.
One possible storyline could be that Naruto is so focused on his goal of becoming Hokage that he unintentionally ignores Hinata's feelings. He might be constantly training and involved in village affairs, not noticing Hinata's attempts to get closer. For example, Hinata could prepare a bento for him, but he's too busy to even accept it. Another could be that Naruto has some misunderstandings about Hinata and chooses to keep his distance, thinking she has some ulterior motives.
In a fanfiction, Naruto could be depressed because he feels he can't live up to the expectations of the village. Hinata, who has always admired him from afar, decides to step in. She shares her own insecurities with Naruto, making him feel less alone. This mutual understanding leads to them spending more time together. Hinata's gentle presence and unwavering belief in Naruto start to heal his depression, and they eventually fall in love.
A common scenario in such fanfictions is that Hinata sacrifices herself in a war - torn situation. For instance, in a great ninja war, Naruto is the key to victory but is targeted by the enemy's most powerful forces. Hinata, with her unwavering love for Naruto, jumps in front of a massive attack aimed at Naruto, knowing full well that it will cost her life. This selfless act then serves as a major turning point in the story, inspiring Naruto and his comrades to fight even harder.
Perhaps there is a misunderstanding about Hinata's Byakugan abilities. It is thought that she and Naruto could use it in a dangerous way. This leads to their banishment. In their exile, they discover new powers within themselves that are not related to the Byakugan, which they then use to fight against the false accusations and return to the village.
Well, in this fanfiction, an ending might be that Hinata, in her grief, leaves the village for a while to find herself. When she returns, she has become stronger and more confident. She then devotes her life to making the village a better place, just as Naruto would have wanted. Another ending could be that the whole village unites even more tightly after Naruto's death, with Hinata at the forefront of this unity, as she was the last person Naruto protected.
In a story, there could be a situation where a magical curse is spreading. Beast Boy, seeing Raven in the path of the curse, uses his own body to block it. As a result, he is infected by the curse which starts to harm him physically and mentally. Raven then embarks on a journey to find a cure, all the while taking care of Beast Boy and their relationship deepens through this difficult time.