What are the Common Themes in 'kuroshitsuji ciel x sebastian fanfic'?

The relationship in 'kuroshitsuji ciel x sebastian fanfic' can be seen as a twisted form of symbiosis. Ciel, having lost so much, uses Sebastian's demonic powers to achieve his goals. Sebastian, on the other hand, patiently waits for Ciel's soul. There are moments of tension and trust between them. For example, in various situations, Ciel has to trust Sebastian to get him out of danger, and Sebastian has to follow Ciel's orders, which sometimes put his own 'demonic code' to the test.

Some fanfictions explore the concept of Sebastian's true nature as a demon and how it affects Ciel. For example, his demonic abilities might both protect and endanger Ciel at the same time. The theme of revenge also comes up a lot. Ciel's quest for revenge and how Sebastian aids him in it can be a central plot. There's also the theme of sacrifice. Whether it's Ciel sacrificing something to keep Sebastian by his side or vice versa, it adds an interesting layer to the stories.

One common theme is the forbidden love. Since Sebastian is a demon, a relationship with a human (the reader) is against the natural order. Another theme could be the power dynamic, as Sebastian has a lot of power and the reader may be in a more vulnerable position. And of course, there's the theme of mystery, as Sebastian's true motives and the nature of his relationship with the reader are often explored.

One popular trope is the 'Forbidden Love' aspect. Since Sebastian is a demon and Ciel is a human, their relationship can be seen as something that goes against the natural order. Another is the 'Power Struggle' trope. Ciel may try to assert his authority over Sebastian, but Sebastian's demonic nature gives him an edge in certain situations. 'Soul Bond' is also common. Given their contract and the connection it implies, fanfictions often explore the deeper spiritual and emotional bond that might develop between them.

A common theme is possessiveness. Since Ciel and Sebastian have a rather special bond, any threat to that bond can trigger possessiveness which is often expressed as jealousy. Another theme could be the fear of loss. Ciel, having lost so much already, might be terrified of losing Sebastian to someone else, and this fear can manifest as jealousy.

In these fanfics, a recurring theme is the power dynamic. With Sebastian being jealous, it can either strengthen or weaken the power he has over Ciel. If he becomes over - protective due to jealousy, Ciel might gain some power in the relationship as Sebastian's actions are more driven by emotion. Another theme is the idea of loyalty. Sebastian's jealousy could be seen as an extreme form of loyalty, not wanting anyone else to have what he considers his (in relation to Ciel). And of course, the theme of love, in a very complex and often unspoken way, is also quite common as the jealousy is often a sign of deeper feelings.

Another theme is the power dynamic between them. Ciel is the master, but Sebastian has his own power. Fanfics play with this dynamic, sometimes showing Ciel trying to assert more control or Sebastian subtly influencing Ciel. For example, in some fanfics, Ciel may try to break free from Sebastian's influence while still relying on him. It makes for very interesting reads.

One common theme is the power dynamic. Sebastian is a powerful demon and the reader is often in a more vulnerable position, so exploring how that power is balanced or shifted is frequent. For example, in many fics, the reader might initially be at Sebastian's mercy but gradually gain some form of influence over him.

One common theme is the power imbalance. Sebastian is a powerful demon, and Ciel is a young, mortal master. This creates a lot of tension and interesting situations where Ciel is constantly trying to hold his own against Sebastian. Another theme is loyalty and its limits. Sebastian is bound by a contract, but his true motives are often questioned.

The theme of sacrifice also shows up a lot. Ciel may sacrifice his own humanity in order to achieve his goals, and Sebastian may sacrifice his own freedom in a way by being bound to Ciel. And there's always the theme of the supernatural, with Sebastian being a demon and all the dark magic and otherworldly elements that come with that in the fanfics.