One theme that pops up frequently is the exploration of the OC's identity. In the presence of these two iconic demons, the OC has to figure out who she is and what she wants. There's also the theme of temptation. Both Sebastian and Claude can be very tempting in different ways, and the OC has to resist or give in to these temptations.
A common theme is the love triangle. The OC is often in a difficult position of choosing between Sebastian and Claude. Another theme is power struggle. Since both Sebastian and Claude are powerful demons, their rivalry over the OC can also be seen as a struggle for power and influence.
A common theme is rivalry. Since they are often at odds in the original source material, this is carried over into many fanfictions. They compete for power, influence, or the attention of a certain character.
Another theme is romance. Some fanfictions explore a romantic relationship between Female Claude and Sebastian. This can involve a slow - burn build - up of feelings, secret meetings, and the struggle to come to terms with their feelings in the context of their complex world.
A frequent theme is the power dynamics. Sebastian and Claude are powerful in their own rights, and the reader might be in a position of relative weakness. How the power is balanced and negotiated within the relationship triangle is often explored. Also, themes of identity can come up. The reader may question their own identity as they are caught between these two very different characters.
A common theme is rivalry. Since Sebastian and Claude are often portrayed as rivals in their original context, many fanfics build on this, showing their intense competition.
One popular sebastian x oc x claude fanfiction is 'The Crossroads of Demonic Fates'. It has an interesting plot where the OC gets caught between Sebastian and Claude's power struggles. The character development of the OC is quite engaging as she tries to navigate the complex relationship between the two demons.
A common theme is the exploration of a complex relationship. Given their different personalities and allegiances in the original source material, fanfictions often focus on how they navigate their relationship. Another theme could be loyalty and betrayal. Since they both have masters to serve, a situation might be created where their loyalties are tested against their feelings for each other.
One common theme is rivalry. Since they are both powerful characters, their competitive nature often comes into play. Another theme is the exploration of their different natures, with Claude being sly and Sebastian being so proper. And of course, there's often a theme of attraction, whether it's a slow - burn or a more immediate kind.
One common theme could be friendship. Despite their differences, they might form an unexpected bond in the fanfic. Another theme could be adventure, where they go on some kind of journey together with their toys.
One common theme could be rivalry. Since Sebastian and Claude are often pitted against each other in their original stories, this can carry over into fanfic as a central theme, with their relationship evolving around their competition.
One common theme is rivalry. Since both characters are quite powerful in their own right, many fanfics explore their competitive nature towards each other. They might compete for a certain goal or for the attention of another character.