Another plot could revolve around a competition or a tournament among all the factions. It could be a test of strength, intelligence, or some other important skill. The winning faction gets a great prize, like a powerful artifact or a large amount of resources. But during the competition, secrets are revealed and relationships between the factions start to change.
Develop backstories for the characters that are linked to the history of their factions. A character from a faction that was once wronged might be on a quest for revenge or justice. This backstory can drive their actions and decisions throughout the fanfic, making them more relatable and engaging to the readers.
A 'buried alive fanfic' could focus on the psychological aspect. The character buried alive could be reflecting on their past mistakes and having hallucinations. They might see people from their past who are either taunting or trying to help them, all while struggling to survive in the confined space.
One idea could be exploring Adam's relationship with other vampires in a different city. Maybe he meets a group of young vampires who are much more reckless than he is, and he has to teach them about the old ways. Another plot could involve Adam creating a new form of music that becomes popular among the undead community. This could attract unwanted attention from both humans and other supernaturals.
One plot idea could be a character from the All for One world somehow ending up in the Naruto universe and having to adapt to the chakra system. Maybe they try to steal chakra powers like they steal quirks in their own world.
A time - travel plot in a Precure All Stars fanfic could be really cool. Maybe the Precure travel back in time to the origin of their powers and have to make sure that the events that led to their powers being created happen correctly. It could involve meeting their predecessors and learning about the true nature of their powers.
One idea could be exploring a different origin for the vampires in the Twilight universe within the fanfiction. Maybe they were created as a result of a scientific experiment gone wrong instead of the traditional vampire lore.
Maybe the story could revolve around how Naruto's family being alive affects the political situation in the Hidden Leaf. His father, as a former Hokage, might have different ideas on how to handle relations with other villages. This could lead to new alliances or conflicts, all while Naruto is growing up in a more complete family environment.
One idea could be a redemption arc for a previously disliked character. Maybe they team up with an unexpected ally and prove themselves in a series of challenges that are different from the ones in the show, like underwater maze races. Another could be a love triangle between three of the all - star contestants that causes drama both on and off the challenge field.
One idea could be that the stalker is a villain who wants to expose All Might's secrets to undermine his heroic image. Another could be a misguided fan who thinks they are protecting All Might but their actions are actually causing trouble. Maybe the stalker has some sort of connection to All Might's past that they are trying to uncover.
One idea could be Naruto traveling to different dimensions where he meets alternate versions of female characters and they all form a sort of harem around him. Another could be that after a powerful jutsu, Naruto is transported to a realm where the rules of life and death are different, and he has to deal with female characters who have their own motives regarding his presence in this new world.