One idea could be a story where Peridot tries to prove her worth to Yellow Diamond in a non - traditional way. Maybe she discovers a new form of energy on Earth that could benefit the Diamond Authority, and she has to convince Yellow Diamond to give her a chance to explore it further.
One idea could be a story where Blue Diamond and Yellow Diamond have to team up to face a new threat from a far - off galaxy. They put aside their differences and combine their powers in unique ways.
Redemption and growth are also themes. Maybe Peridot helps Yellow Diamond see a different side of things, leading to her becoming a more empathetic character. Or vice versa, with Yellow Diamond guiding Peridot in some way. It could be about them growing together in an unexpected relationship.
One common theme is power dynamics. Since Yellow Diamond is a very powerful figure and Peridot is much lower in the hierarchy, their interactions often explore this difference in power. Another theme is redemption. Sometimes, the fanfics will have Yellow Diamond seeking redemption for her past actions, and Peridot plays a role in that process.
A cool plot could be a fusion of their powers. Naruto's ability to create shadow clones and Peridot's technological skills could combine in an unexpected way. For example, the shadow clones could be used to operate Peridot's machines simultaneously, creating a super - efficient combat or construction strategy. Or perhaps Peridot uses her knowledge to upgrade Naruto's ninja tools, making them more powerful.
You can try searching on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. There are often specific tags for Steven Universe characters, so you can look for 'Yellow Diamond x Peridot' under the relevant sections.
Their relationship could develop through mutual discovery. For example, Peridot could show Yellow Diamond the unique aspects of Earth that she has come to appreciate. Yellow Diamond, in turn, could share some of her knowledge of the Gem Homeworld with Peridot, creating a bond based on the exchange of ideas.
I've read a 'peridot x yellow diamond fanfic' where it was set in a post - war scenario. The fanfic delved deep into how they both had to adjust to the new world order. Peridot was trying to find her place among the gems, and Yellow Diamond was dealing with the loss of her authority. Their relationship in this fanfic was a slow - burn type, starting from mutual suspicion to gradually understanding each other. It was really well - written with great character development.
A possible plot could involve a mystery surrounding an ancient power that only Blue Diamond and Pink Diamond together can unlock. It could start with strange events occurring in their realms that seem to be connected to this power. Also, a plot about them swapping places for a day and learning about each other's responsibilities and the challenges they face would be interesting. There could also be a story where they discover a hidden prophecy that involves their fates being intertwined in a way they never expected.
A fanfiction could also focus on the origin story of how Yellow Diamond and Lemon met. It could be a chance encounter in a far - off land. They initially don't get along but as they face difficulties together, they start to understand each other and form an unlikely bond.
Maybe a time - travel plot where Steven, Peridot, Lapis, and Lemon are sent back to a crucial moment in Gem history. They have to work together to make sure the events unfold in a way that doesn't disrupt the present. Along the way, they learn more about each other's pasts and grow closer as a group.