I'm not sure specifically as there could be many different versions of such a fanfic. But generally, it might involve Naruto facing some overwhelming danger in the Wave arc that leads to his death, perhaps a more powerful enemy than in the original story or a failed mission that costs him his life.
I'm not sure specifically as there could be many different 'sakura dies in wave fanfic' out there. It might involve a story where a character named Sakura meets her end in a wave - related scenario, perhaps a tsunami or a powerful ocean wave in a fictional world.
In addition to Sasuke, Kakashi, and Sakura, other characters like Iruka sensei would be affected. Iruka was one of the first people to believe in Naruto. Naruto's death would be a huge blow to him. Also, the villagers of Konoha who had started to see Naruto in a new light might have to re - evaluate their views. And characters in the Land of Waves, like Tazuna and his family, who had come to rely on Naruto's help, would also be impacted. They might lose hope or face greater danger without Naruto there to protect them.
Well, a 'naruto wave kage fanfic' could center around the Wave Village and its connection to the various Kage. It might tell a story of how the events in the Wave Village impact the decisions of the Kage from different ninja villages. For example, it could be about how the actions of the ninja in the Wave Village during a crisis make the Hokage of Konoha take certain diplomatic or military actions towards other villages. It could also explore the backstories of the Kage characters in relation to the Wave Village, like if one of the Kage had a personal experience in the Wave Village when they were younger that shaped their leadership style.
In 'naruto is betrayed in wave fanfic', it could be that Naruto is betrayed because of false accusations. People might believe that he's working with the enemy. His friends in the Wave mission, like Sasuke or Sakura, could turn their backs on him. They might not trust him anymore and even try to stop him from achieving his goals in the mission.
Since I don't know the specific fanfic, Sakura is likely one of the main characters as it's in the title. There may also be characters related to her, like her friends or family who are affected by her death in the wave.
Perhaps there's a prophecy involved. The fanfic could be set up where it's foretold that Boruto will bring about a great change, but only if he survives a certain threat. Naruto, aware of this, sacrifices himself to ensure Boruto lives on. This could then trigger a series of events where Boruto has to deal with the political fallout in the village, as some may blame him for Naruto's death, while others see him as the key to the future. It could also lead to a rift between Boruto and some of his friends who struggle to understand why Naruto had to die for him.
One possible plot could be that Naruto is poisoned by a Christmas - themed gift that was actually a trap set by an old enemy. As he slowly succumbs to the poison on Christmas, he reflects on his life and his friends. His friends gather around him, trying to find a cure, but it's too late, and he passes away, bringing a somber mood to the usually festive Christmas in the Hidden Leaf Village.
In the 'naruto dies boruto fanfic', it could be that Naruto is killed by an unexpected betrayal within the village. This shatters Boruto's world. He then goes on a journey to find out the truth behind the betrayal. Along the way, he meets some of Naruto's old friends who help him train and grow stronger. Boruto also starts to uncover secrets about the village's past that his father was trying to protect, and he realizes he has to be the one to expose these secrets and bring justice to his father's death.
The plot could involve Naruto being resurrected as a vampire by some dark magic. As a vampire, he is shunned by some in the village at first. But then he discovers that there are other vampires who are planning to take over the ninja world. So he teams up with his old comrades, using his unique combination of ninja skills and vampire abilities to stop them.
One possible plot could be that Naruto's death in Wave shocks the ninja world. His body then undergoes some dark transformation due to a hidden curse or experiment. As a monster, he might lose his sense of self but retain his ninja skills. His former friends like Sasuke and Sakura would be torn between trying to save him or having to fight him to protect the village. The story could explore themes of loss, the power of darkness, and the struggle between friendship and duty.