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.
One idea could be Lars exploring a new planet full of strange, sentient plants that communicate through colors. He has to figure out how to interact with them to get the resources he needs for his ship.
The relationship between Steven and Lars in Steven Universe is centered around friendship. Steven, with his positive and kind nature, helps Lars to open up and become a better person. They face things like the threat from the Gems and other inter - dimensional problems together. Their connection is a pure and important part of the story, which is about friendship, self - discovery, and protecting their home and the people they care about, not anything improper.
In the world of Steven Universe, Steven and Lars are comrades. They often team up in various situations. For example, when dealing with the strange happenings in their town or when facing the mysteries related to the Gems. Their relationship is built on trust and shared experiences, which is a common and positive theme in the show.
A great fanfiction could be about Steven and Connie swapping bodies. This would lead to a lot of humorous moments as they try to figure out how to act like the other. Connie would struggle with Steven's powers, and Steven would have to deal with Connie's more studious and disciplined life. It could also be a chance for them to understand each other on a deeper level.
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.
One idea could be that Peridot and Amethyst are on a mission together and they start off bickering like they often do in the show. But as the mission progresses, they start to understand each other's strengths better. For example, Peridot's technical knowledge and Amethyst's physical power combine to defeat a new kind of enemy. Another plot could be them exploring a part of the Gem world they've never been to before and having to rely on each other to survive. Maybe they discover an ancient Gem relic that has the power to change the way Gems interact with Earth. This could lead to some really interesting character development as they figure out what to do with this new discovery.
Another possibility is a crossover with "Gravity Falls". Dipper and Mabel could come to Beach City during a mystery involving Gem technology. Their knowledge of the strange and unusual from Gravity Falls could combine with Steven's understanding of Gem lore to solve the mystery.
One idea could be that as a girl, Steven has different relationships with the other Crystal Gems. Maybe she forms a really close sister - like bond with Pearl, who becomes overprotective. Another could be that her fusion forms take on a more feminine aesthetic and she has unique experiences when fusing with the others.
One idea could be that the Crystal Gems find a strange Pokemon in the woods near Beach City. They initially mistake it for a new type of Gem monster. For example, a Pikachu that has an electric aura similar to the energy the Gems use. The Gems then try to figure out how to deal with this 'creature' which leads to humorous and heartwarming interactions as they learn about Pokemon.
A lot of these fanfictions also explore their individual growth. Peridot might grow out of her more rigid gem ways with Steven's influence, and Steven could learn new ways of problem - solving from Peridot. It's always fascinating to see how different authors imagine their relationship evolving in different scenarios.