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.
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.
One interesting story could be about Peridot and Lapis exploring a new planet together. They might encounter strange creatures and have to use their unique powers to survive. For example, Peridot's technical skills could help them build a shelter while Lapis uses her water powers to find a water source.
Another interesting one is 'The Tale of Lapis and Peridot'. In this story, they get involved in a mystery on Earth. The author does a great job of portraying their personalities and the way they interact with the human world.
There's 'The Adventures of Peridot and Lapis' which is quite popular. It follows their journey across different dimensions, facing various challenges. It has great character development for both of them.
One common theme might be the exploration of their relationship dynamics. Since they are two distinct characters, fanfic might focus on how they interact and get to know each other better. Another theme could be adventure, where they go on some sort of journey together.
Some dedicated Steven Universe fan communities might have fanfiction archives or threads dedicated to this pairing with the hurt/comfort genre. For example, certain Discord servers focused on Steven Universe fandom. Members often share and discuss their favorite fan works, and it's possible to find some great Lapis Lazuli x Peridot hurt/comfort fanfics there. You just need to join these communities and start exploring.
One possible plotline could be that they start off as friends but gradually realize their deeper feelings for each other. Maybe they go through some difficult situations together in Little Homeworld and that brings them closer, leading to a kiss. Another could be that they are forced to work together on a project and during that time, their relationship blossoms into something more romantic.
Well, in the world of Steven Universe fanfiction, it's very possible. The show has a rich set of characters with complex relationships. Lapis and Peridot have a unique bond in the series. Some fanfic writers might take that bond and develop it into a more romantic or emotional connection that could involve a kiss. It really depends on the creativity and interpretation of the individual writers. You can start your search on well - known fanfiction platforms to see if such stories exist.