One idea could be a fanfic that focuses on the backstories of the minor characters in Pandora Hearts. For example, exploring the past of some of the servants in the Vessalius household. Another idea is a time - travel fanfic where a character goes back in time to change a crucial event in the Pandora Hearts story. Maybe a fanfic that imagines an alternate ending to the series, where different alliances are formed and different fates await the characters.
Some Pandora Hearts fanfic ideas include a story where a new character is introduced into the Pandora Hearts world. This new character could have a unique ability that disrupts the existing power balance. Or a fanfic that takes place during the time when Oz was trapped in the Abyss. What was he really experiencing? How did he survive? You could also write a fanfic about the daily lives of the Pandora Hearts characters, showing their more mundane moments in contrast to the high - stakes drama of the main story.
You could make an OC that is a half - human, half - Chain. This OC would struggle with their identity, being shunned by both humans and Chains. Their story could revolve around finding their place in the world of Pandora Hearts. They might have special abilities that neither humans nor Chains possess, which could make them a target for various factions in the story. They could also form an unlikely alliance with some of the main characters who see their potential and uniqueness.
An interesting Pandora Hearts OC fanfiction idea could be an OC that is a hybrid of a human and a Chain. This OC could struggle with their identity, being neither fully human nor fully a Chain. They could be on a journey to find out where they truly belong. Also, an OC that is a time - traveler who has come to the Pandora Hearts world to prevent a certain catastrophe from happening could make for a great story.
One idea could be a crossover where characters from both universes meet in a magical realm. For example, Harry Potter characters could find themselves in the world of Pandora Hearts and have to deal with the strange creatures and the complex power dynamics there. Another idea is a story where the magic systems of both worlds combine in unexpected ways. Maybe a Hogwarts student discovers a Pandora Hearts - style power within themselves.
You could also write a fanfiction centered around a mystery. For example, a strange event occurs in Pandora that only Break and Alice seem to be aware of. They have to work together to solve it, and during the process, their relationship deepens. As they uncover clues and face challenges, their bond becomes stronger, and new aspects of their personalities are revealed.
One interesting Pandora Hearts fanfiction could be about a different take on the relationship between Oz and Alice. For example, a story where they have to face a new, unknown enemy together in a world that's a bit different from the original setting. It might explore their characters more deeply as they struggle against this new threat.
A fanfiction could explore a scenario where the Sharingan in Naruto has a connection to the power of the Pandora Hearts world. Maybe Sasuke discovers that his Sharingan has a hidden ability that is related to the power of the Chains. This could lead to a whole new arc in his character development as he tries to understand this strange connection.
One interesting storyline could be about a human who is stranded on Pandora and has to learn the ways of the Na'vi to survive. They form a bond with a particular Pandora creature that helps them in their journey.
A very interesting one is 'Beyond Duty'. In this fanfic, it shows how Vincent and Gil's relationship goes beyond their respective duties in the Pandora Hearts universe. It has a lot of character development for both of them and shows how their bond can withstand different challenges and trials.
There's a fanfic titled 'Merged Realms'. It's a long - form fanfic that delves deep into the lore of both 'Black Butler' and 'Pandora Hearts'. The story starts off with a strange event that seems to connect the two worlds. As it progresses, we see the characters from both sides having to deal with new threats and challenges that are a result of this merging. It's really engaging and has some great fan - created art associated with it on some fanfic websites.
One idea could be creating an OC who is a keyblade wielder from a forgotten world. This OC could be on a quest to discover the secrets of their world's connection to the greater Kingdom Hearts universe. They might encounter classic characters like Sora and Riku and have to prove their worth as a keyblade wielder.