Romance is also a theme, though it can be a bit tricky in the context of Transformers. Writers often explore the emotional connection between Arcee and Optimus Prime, how they might have a deeper understanding of each other that goes beyond just comradeship.
Love and loyalty is also a big theme. Since it's a relationship - based fanfic, it often explores how they feel about each other. Maybe Arcee has to prove her loyalty to Optimus in a difficult situation, or Optimus shows his love for Arcee in a selfless way.
The theme of sacrifice often appears in fanfictions about them. They are willing to put themselves in harm's way for the greater good. This could be shown in a scenario where they have to sacrifice a strategic position to save a group of innocent Autobots. Also, the theme of redemption can be explored, especially if a character from their past resurfaces and they have to decide whether to forgive or not.
One great fanfiction could be about Optimus and Arcee going on a dangerous mission together. They face numerous challenges, like battling a powerful new Decepticon. Their teamwork and trust in each other are put to the test. Arcee's speed and agility combined with Optimus' strength make them a formidable duo. Along the way, they might have some deep conversations about the future of their race and their place in the war.
Another plot could be set in a post - war scenario. The Autobots are rebuilding their world, and Optimus Prime and Arcee are tasked with different aspects of the reconstruction. However, they keep finding excuses to work together. As they do, they gradually fall in love while also dealing with the trauma of the war and the challenges of creating a new future for their kind.
One possible storyline could be them facing a powerful new Decepticon threat together. Optimus and Arcee would have to combine their skills, with Optimus using his strategic mind and Arcee her speed and agility. Another could be a story set in a post - war scenario where they are trying to rebuild Cybertron and their relationship deepens during the process. And perhaps a time - travel plot where they go back in time and have to change an event that will save Cybertron in the future.
One possible fanfiction could be about Arcee and Optimus teaming up for a dangerous mission. They might face a powerful new enemy that neither of them has encountered before. Their combined skills and trust in each other would be crucial in overcoming the challenges. For example, Arcee's agility and Optimus' strength could be used in a complementary way to defeat the foe.
Perhaps a fanfiction where Arcee has to save Optimus Prime from a mind - controlling device. She has to fight against his altered self and find a way to break the control. This would show her determination and loyalty to Optimus.
Well, a very frequent theme is the struggle between their duties and their feelings for each other. They are warriors first, so they have to balance their personal emotions with their responsibilities towards their team. Also, the theme of growth in their relationship is common. They start from a certain point and as the story progresses, their bond deepens in different ways.
One common theme is the struggle of their relationship within the context of the war. They are both important in the Transformers universe, and the fanfictions often explore how their love survives or is affected by the battles and the overall war situation.
One common theme is friendship. Given their relationship in the show, many fanfictions expand on how they become closer friends. Another theme is adventure. They might go on missions together against the Decepticons. For example, they could be exploring an ancient Cybertronian ruin in search of a powerful artifact.