One idea could be to focus on a new character joining the Guardian Games. This character could be from a different background and have unique abilities that change the dynamics of the games. For example, a Guardian who can manipulate time in small ways to gain an edge in the competitions.
You could also write a fanfiction where the rules of the Guardian Games are changed by some external force. This would force the Guardians to adapt and come up with new strategies. It could lead to some really exciting and unexpected plot twists.
One idea could be that the guardian angel has lost its memory and has to figure out its purpose while protecting its human charge. Another could be a story where the guardian angel falls in love with the human it's supposed to protect, which creates a whole set of moral and emotional dilemmas. Or perhaps the guardian angel has to team up with a fallen angel to save the human from a greater evil.
In a 'Naruto Aura Guardian' fanfiction, you could focus on the relationships within the Aura Guardian community. For example, there could be different factions among them with varying beliefs about how to interact with the ninja world. One faction might want to stay hidden and only protect their own secrets, while another believes they should actively help the ninja villages. A story could revolve around a young Aura Guardian who has to choose which faction to side with, and how this decision impacts his relationships with Naruto and other key characters in the Naruto universe.
One idea could be that the vampire guardian has to protect a human from a rival vampire clan who wants to use the human for some dark ritual. Another could be the vampire guardian falling in love with the human they are protecting, which creates a whole new set of challenges and emotions.
One idea could be to explore the backstory of a guardian character. For example, how they came to be a guardian in the Fairy Tail world. Maybe they were once an ordinary wizard who had a special encounter that led them to take on the role of a guardian. Another idea is to create a new type of guardian with unique powers and abilities that haven't been seen before in the Fairy Tail universe. This could add an exciting new element to the fanfiction.
One idea could be exploring the backstory of a minor character in the Dark Guardian Series. For example, a sidekick who has their own set of challenges and goals that are not fully explored in the original series. Another plot could be a time - travel scenario where a character goes back in time to change a crucial event in the Dark Guardian Series' history, which then has a ripple effect on the present. A third idea is a crossover plot where characters from the Dark Guardian Series meet characters from another similar - themed series and have to work together to face a common enemy.
One plot idea could be that Cayde 6 and the female guardian are on a mission to recover an ancient artifact. Along the way, they face numerous challenges and start to develop a deeper understanding of each other. Another could be a story where the female guardian gets injured and Cayde 6 has to protect her while also finding a way to get her the medical help she needs. Maybe they also discover a long - lost secret about the history of their world during this time.
One idea could be Percy and Thalia teaming up to protect a group of young demigods who are being hunted by a new and powerful monster. They could use their combined skills, Percy's water powers and Thalia's electric ones, to fend off the attacks.
A great plot for 'naruto as guardian ninja fanfiction' could be Naruto becoming the guardian of a group of young orphans who have special ninja abilities. These orphans are being targeted by an evil organization that wants to use their powers for bad. Naruto has to protect them, train them, and at the same time, keep their existence a secret from the world. He would have to deal with the emotional trauma of the orphans and help them grow into strong and kind - hearted ninjas.
Another plot could involve Percy facing a conflict within the Hunt. Some of the huntresses might not trust him at first because he's not a traditional member. He has to prove his worth by leading them through a difficult trial, like finding a lost magical artifact that's crucial for the Hunt's survival.
Maybe a plot where the Guardian of the Mist discovers a long - lost secret technique within the Mist village that has the power to change the balance of power in the ninja world. But there are those who would do anything to stop this discovery from being made public.