One scenario might be related to a failed mission. Maybe Naruto is sent on a top - secret mission that is much more dangerous than anyone anticipated. He could be betrayed by someone he trusts during the mission, leading to his death. Or perhaps there are some unforeseen circumstances, like a strange and deadly curse that gets unleashed during the mission which he succumbs to.
Well, it could also be that in the fanfic, Naruto's own power gets out of control. His Nine - Tails chakra might go berserk in a way that he can't handle. His body could be unable to withstand the overwhelming power, and as a result, he dies. This could also be related to some sort of experiment gone wrong on Naruto that was meant to enhance his power but instead had fatal consequences.
One possible scenario could be that he succumbs to the hardships in the village as a child. Maybe the villagers' hatred towards him is too much to bear, and he gets into a situation where he can't defend himself. Another could be that he's on a mission early on and it goes horribly wrong, perhaps facing an enemy far too powerful for his young self.
One possible scenario could be that they sacrifice themselves to save the village from an ultimate evil. They might combine their powers in a final, desperate move that exhausts them completely, leading to their deaths.
Perhaps in the fanfiction, Naruto is betrayed during the battle. By someone he trusted, like a comrade who was secretly working for the enemy. This betrayal catches him off - guard, and he is severely injured. Unable to fully recover, he succumbs to his wounds during the fight.
In some possible scenarios, he might die heroically in a battle against a powerful enemy. Maybe while defending his comrades or an important location.
Perhaps in the fanfic, the singer's death is a mystery, and fans start to investigate, uncovering secrets about the singer's life that were previously unknown. This could involve looking into the singer's relationships, unfulfilled dreams, or hidden talents.
In some scenarios, she might die heroically in a battle against a powerful Grimm. For example, she could sacrifice herself to save her friends from a horde of Nevermores. Another possibility is that she succumbs to an unexpected betrayal within the story, perhaps by a character who was thought to be an ally. Or she could die due to some unforeseen magical or technological accident in the RWBY universe.
In a 'Percy Jackson Dies' fanfic, one possible scenario could be that he sacrifices himself to save his friends during an epic battle against a powerful new enemy. Maybe a horde of monsters that are immune to his usual powers overwhelm him while he's trying to buy time for his friends to escape.
One possible scenario could be that Naruto was severely injured in a battle, perhaps against a powerful new enemy. He was brought to the hospital, but his injuries were too grave to be healed, and he passed away surrounded by his friends and family, leaving everyone in deep sorrow.
Perhaps in this fanfiction, Naruto is fatally injured by a powerful enemy who has lured him to the Valley of the End. He's outnumbered and despite his best efforts, he succumbs to his wounds. His death then has a profound impact on all his friends and the entire ninja community, leading to a new era of unrest and a search for a new hero.
Well, perhaps in the fanfic, Jake's death could lead to a change in the balance of power in Ooo. Evil forces that were previously held at bay by Jake's strength start to emerge. Maybe the Ice King, instead of seeing Jake as an obstacle to his schemes regarding Princess Bubblegum, now has free rein. Finn would have to step up in a big way, but without his best friend, it would be extremely difficult. He may struggle with feelings of guilt, thinking he could have saved Jake.