Conflict is also often seen. It could be external conflict, like they are against some common enemy, or internal conflict, such as one 'rose' having doubts about their relationship with the other. This conflict then drives the plot of the fanfiction forward and makes the story more interesting.
Well, you can try looking on fanfiction.net. There are often a variety of stories in the 'rose x rose ships fanfiction' genre there. Some might be about their adventures together in a magical world, or perhaps their relationship development in a modern setting.
One common theme is adventure. Ruby Rose is often depicted going on exciting quests, exploring new places and facing dangerous challenges. Another theme is friendship. Her relationships with her friends are explored deeply, showing how they support and rely on each other.
One common theme is loyalty. Pearl's unwavering loyalty to Rose is often explored in great detail. Another theme is sacrifice, as Pearl has sacrificed a lot for Rose in the original story and this is further developed in fanfiction.
One common theme is the exploration of their contrasting personalities. Kanaya's calm and composed nature against Rose's more complex and sometimes impulsive self. For example, in many fanfictions, they help each other grow by learning from these differences.
Not knowing precisely what 'x rub rose' represents, we can make some assumptions. If it's about a magical rose and 'rub' is an action related to it, themes of magic and transformation could be common. Also, if there are characters involved, relationships and their development would be a likely theme. Maybe the rose has some special power that gets activated by 'rub', which could lead to themes of power and responsibility.
The idea of different timelines is also a common theme in '10 and Rose fanfiction'. Writers often play with the concept of alternate timelines where their relationship might have taken a different turn. It could be a timeline where Rose becomes more like the Doctor in terms of her knowledge and abilities, and how that affects their relationship.
Love or at least a deep affection might also be a theme. The writers could explore a romantic relationship between 9 and Rose or a deep platonic love that is so strong it rivals a romantic one. They could be in a situation where they have to fight for their relationship against external forces, adding drama and tension to the story.
One common theme is adventure. They often go on exciting travels through time and space in these fanfictions. For example, exploring unknown planets or different historical eras.
One common theme could be the exploration of their relationship in a more romantic and intense way. Since it's a fan - created concept, it might focus on the emotional connection between Steven and Rose.
One common theme is adventure. The OC and Amy Rose often go on quests together in the Sonic universe, facing various villains and challenges. Another theme is friendship that gradually turns into love. At first, they might be just friends or allies, but as the story progresses, they develop deeper feelings for each other.