One interesting plotline could be Harry's struggle to fit into the new world of fallen angels while still having his human memories and emotions. He might have to learn the rules and hierarchies of the fallen angel society, which are completely different from what he knew as a human wizard.
A possible plotline is the discovery of an ancient prophecy related to the fallen angel bloodline in the Naruto universe. This could lead to a race among different factions to either protect or use the power of the character with this bloodline. The character might have to fight against those who want to exploit their power for evil purposes while also struggling with their own identity.
One interesting plotline could be Issei's struggle to control his new fallen angel powers while still maintaining his relationships with his friends at school. For example, he might accidentally use his powers in public and have to cover it up.
One interesting concept could be the combination of the magical world of Harry Potter with the idea of fallen angels. It might introduce new magical abilities or creatures related to the fallen angel lore. For example, perhaps a character inherits powers from a fallen angel that allow them to manipulate a different type of magic, like shadow magic which is not common in the original series.
There could be a fanfiction where a fallen angel is sent to Hogwarts as a sort of guardian in disguise. This fallen angel might have to protect the students from a new dark threat that the regular wizards don't fully understand. It could be really exciting as it combines the magical world of Harry Potter with the mysterious nature of fallen angels.
One interesting plot could be a fallen angel trying to regain its former status. For example, it might embark on a series of heroic deeds in the human world to prove its worth to the celestial realm again.
Well, one interesting concept could be the idea of a fallen angel in the Naruto universe. Maybe it's about a character who has some sort of angelic powers but has been cast out, and they bring a new type of power or conflict to the story. It could also involve a different view on the concept of good and evil in the Naruto world, as fallen angels often have a complex relationship with morality.
One popular 'fallen angel Harry Potter fanfiction' might be those that explore Harry's character with a new, darker angel - like aspect. For example, some stories could show him having special powers related to his fallen angel status that he uses to fight against Voldemort in a different way. However, it really depends on different authors' creativity.
Another plotline could be about the power struggle among fallen vampires. Maybe some want to rise again to their former status, while others are content with their new, more subdued existence. This can lead to a lot of in - group drama and conflicts.
One interesting plotline could be about a character's journey to discover a hidden power within themselves. For example, a minor character in RWBY might find that they have a unique ability related to the 'fallen petals' concept. This could lead to them having to face challenges and overcome their insecurities.
One idea could be that a fallen angel joins the Avengers with a mysterious power that can either save or doom the team. For example, the fallen angel might have the power to manipulate time on a small scale, which could be useful in battles but also dangerous if misused.