Maybe Black Pearl discovers a hidden power within herself that is connected to a long - forgotten Gem technology. This power could be something that the other Gems either fear or desire. The fanfiction could explore how she deals with this new - found power and the reactions of the other characters in the Steven Universe world.
A third idea would be to create a story where the Black Pearl has a sentient being inside it. This being could communicate with Steven and the others telepathically. It could be a source of great wisdom or power, but also comes with a dark side that the characters have to deal with. For example, it might try to possess one of the characters in order to achieve its own goals.
One idea could be that Pearl and Mystery Girl team up to solve a mystery on Earth that involves Gem technology. Maybe they find an ancient Gem artifact that is causing strange phenomena, and they have to figure out how to stop it together.
There might be a fanfiction where Steven and Pearl go on an adventure to a new planet. In this story, they encounter strange new creatures and have to work together to overcome obstacles. It's a great way to explore their characters outside of the main storyline of the show.
There could be a plot where Baby Steven gets sick or injured in some way, and Pearl is extremely worried. She tries all her knowledge of Gem healing techniques, but since Steven is half - human, she has to figure out new ways to help him. She might seek advice from Garnet and Amethyst, and in the process, they all bond more closely as a family, with Pearl being especially protective of the baby Steven.
A really cool Pearl fanfiction could be a 'what - if' scenario. For instance, what if Pearl had made different choices during certain battles or important events in the Steven Universe series? This type of fanfiction can offer a fresh perspective on her character and how it could have changed the overall story.
One idea could be that Lars and Steven go on a space adventure together. They might encounter new gem species and have to work together to solve problems. For example, they could find a planet where the gems are in a civil war, and Lars and Steven use their unique skills to bring peace.
A more emotional plot could be an OC who was once part of the Homeworld gems but defected. They have a lot of guilt and self - doubt because of their past actions. In the fanfiction, they try to make amends by helping the Crystal Gems. But they constantly fear that their old allies will come after them. This internal struggle and their journey of redemption could be a really interesting story.
The settings in such fanfiction can be quite fascinating. Picture this: Pearl and Lemon in a new location that wasn't explored in the original show. It could be a hidden gem world or an ancient ruin. The fanfiction might describe how they interact with this new environment. Also, the emotional arcs can be very engaging. Pearl might experience new emotions because of Lemon, like a new kind of friendship or even a rivalry that makes her grow as a character.
One interesting scenario could be Baby Pearl getting into Steven's room and playing with his toys. She might find a stuffed animal and start having a conversation with it as if it were a real friend, imagining all kinds of adventures they could go on together.
One idea could be that Naruto and his friends end up in the world of Steven Universe. They could team up with the Crystal Gems to fight a new common enemy that has the power - stealing abilities like Orochimaru and the ability to corrupt gems like the Diamonds' powers. Naruto's jutsu could be a new and strange concept for the Gems, and Steven could try to understand Naruto's ninja way.