In a fantasy world setting, the reader is a powerful mage. Sebastian and Claude are servants of two rival kingdoms. The reader has the ability to bring peace between the two kingdoms, and both Sebastian and Claude are sent to convince her to side with their respective kingdoms. However, as they spend time with her, they fall in love instead of just focusing on their missions.
One idea could be a love triangle situation where the reader is a servant in a grand manor served by both Sebastian and Claude. The reader is initially charmed by Sebastian's suave and proper demeanor but then finds herself drawn to Claude's mysterious allure as well. They both compete for the reader's affection in a series of events that involve solving mysteries within the manor and protecting the master.
One aspect to consider in this type of fanfiction is the complex relationships. Sebastian and Claude are both very distinct characters. Sebastian is often portrayed as sophisticated and devious in his own way. When a reader is inserted into the mix, it creates a love triangle -esque situation. The dynamic between them can lead to a lot of interesting plot developments. For example, the reader might be caught in the middle of their power struggles or their attempts to win the reader's affection could be full of intrigue and mystery.
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 scenario could be where the reader is injured. Sebastian and Claude are both worried sick. They take turns taking care of her, bringing her warm soups and herbal remedies. Sebastian softly sings lullabies to help her sleep, while Claude reads her favorite books out loud. As the reader recovers, she realizes how much they both care for her, and a new level of romantic tension builds between them all.
A title like 'Claude Faustus and Sebastian Michaelis: A Forbidden Encounter in Fanfiction' would be interesting. It gives a sense of mystery and something that perhaps shouldn't be happening between them.
There's a fanfic called 'The Meeting of Shadows' which is quite interesting. In this story, Sebastian and Claude are forced to work together on a task by some mysterious force. It shows how they interact when they have a common goal, while still maintaining their enmity. It's a great read if you like exploring their dynamic.
One idea could be that they are forced to work together on a mission in the human world. They initially clash due to their different methods but gradually come to respect each other. Another could be a time - travel plot where they end up in a different era and have to rely on each other to get back. Or perhaps they meet in a magical realm that is neither their own and must team up to escape.
One possible title could be 'Sebastian and the Female Reader: An Unforgettable Encounter'. This title gives a sense of mystery and the idea that there is something special between Sebastian and the female reader. It's simple yet effective in drawing the reader's attention.
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.
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 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.