I'm not entirely sure which specific 'Steven Universe Lapis x Steven Lemon Fanfic' you are referring to. There could be many interpretations and themes within such a fan - created story. It might explore the relationship between Lapis and Steven in a unique way, perhaps with elements of friendship, adventure, or even some emotional growth for the characters.
In fanfics, Peridot is often depicted as highly intelligent. She brings her tech - savvy knowledge from Homeworld and uses it in various situations on Earth. For example, she might use her understanding of Gem technology to fix something that the Crystal Gems are having trouble with.
Baby Peridot in the world of Steven Universe was a curious little thing. She had just emerged and didn't quite understand all the rules. Steven found her and was instantly intrigued. He brought her home and started teaching her about Earth. They went to the Big Donut together, and Baby Peridot was amazed by all the colorful treats. Steven explained what each one was. Later, they sat on the beach, and Steven told her stories about the Crystal Gems' adventures. Baby Peridot listened intently, her eyes wide with wonder.
A possible plot could be that Baby Peridot accidentally activates an old Gem device that causes chaos in Beach City. Steven has to work with her to fix it. Along the way, they learn more about each other and the history of the Gems on Earth.
One possible fanfiction could be about Lapis and Peridot fusing during a time of great danger on Earth. They fuse to protect their friends and the planet from a new, powerful enemy. Their combined powers create a unique and beautiful form that has abilities neither of them had alone.
One possible plotline could be that Lapis and Steven discover a hidden part of the Gem world together. They have to rely on each other's unique abilities to navigate through the challenges there. Another could be that Lapis is having trouble adjusting to life on Earth, and Steven helps her by showing her all the beautiful and positive aspects of the planet.
Peridot is the central figure most of the time. But in some fanfictions, characters like Lapis Lazuli might show up. Since they have a history together in the show, their relationship can be explored in a lemon - inspired scenario. For instance, they could be exploring a lemon - filled landscape together, and their different personalities would play out in how they react to the new environment.
One interesting story could be about Peridot's adjustment to life on Earth in a lemon-themed way. Maybe she discovers a lemon grove and has all sorts of comical and heartwarming interactions with the local wildlife there. Another could involve her using lemons in some sort of experiment that goes awry but leads to a new friendship or discovery.
Since 'lemon' fanfics go against the rules of many fanfiction platforms, it's better to avoid them. Instead, you could try to find fanfics that have Peridot in interesting storylines. For example, fanfics that deal with Peridot adapting to life on Earth, her scientific discoveries, or her friendships. These types of stories can be really fun to read and are more widely available and acceptable.
The plot could involve Lapis and Peridot fusing accidentally at first. Maybe they are trying to work together on a project, like building a new structure for the Crystal Gems' base. Their powers interact in an unexpected way and they fuse. Then, they have to figure out how to function as this new being while also dealing with the reactions of the other Gems.