Power and responsibility is also a theme. Given that Steven has unique powers and Blue Diamond has her own vast power and influence. Fanfictions often explore how they use or should use their powers and the responsibilities that come with them. In some stories, they work together to solve problems that require both of their powers and the right mindset to take on the associated responsibilities.
One common theme is redemption. Blue Diamond has done some not - so - great things in the past, and in the fanfiction, her relationship with Steven often serves as a path to her redemption. For example, Steven's kindness and understanding can make her see the error of her ways.
A major theme is often power. As Pink Diamond, Steven has a different level of power and influence. Fanfictions might explore how he uses or misuses this power. Also, relationships are a big theme. His relationships with the Crystal Gems, his human friends, and even his enemies might change because of his new identity. For instance, his relationship with Garnet could be affected as she was made in part by Pink Diamond. There could be a lot of emotional turmoil and growth in these relationships.
One popular theme is redemption. Since Blue Diamond was initially an antagonist, many fanfictions explore her journey towards redemption through her interactions with Steven. Another theme could be friendship. Steven has a way of befriending almost everyone, and his relationship with Blue Diamond in fanfics can show a unique kind of friendship.
The theme of discovery is also prevalent. Steven discovers more about the Diamonds through his encounter with Pink Diamond, and Pink Diamond might discover new things about Earth and the Crystal Gems. There's also the theme of family, as Steven's connection to the Diamonds is a sort of family - related one, and this meeting can further explore that aspect.
One common theme is redemption. Since the Diamonds were initially antagonists, many fanfictions focus on Red Diamond seeking redemption for past actions. Another theme is self - discovery. Red Diamond often has to figure out its own identity outside of the Diamond Authority. And friendship is also a theme, like forming bonds with the Crystal Gems or other characters.
One common theme is self - discovery. The OC often has to figure out who they are in the complex world of the Diamonds. Another theme is friendship, as they usually form bonds with the existing characters.
One common plot element is the exploration of Blue Diamond's past through her interaction with Steven. Another could be a situation where they are forced to rely on each other in a difficult situation. For example, they might be stuck in an alien environment together.
Maybe Steven tries to understand Blue Diamond's past and they form an unexpected friendship. For example, Steven might show Blue Diamond how the modern world has changed and how the gems are living differently now.
One common theme is loyalty. Blue Pearl is extremely loyal to Blue Diamond in the original show, and fanfictions often explore the depths of that loyalty and how it could develop into a deeper relationship.
One common theme is their relationship repair. Given their complex relationship in the show, fanfictions often explore how they might overcome their differences and become closer. For example, some stories might have them having heart - to - heart conversations and understanding each other better.