One common theme is the idea of opposites attract. John and Karkat have very different personalities, and fanfics often play on how these differences can actually bring them together in a unique way.
Another theme is friendship evolving into love. They might start as just acquaintances or even enemies, but through shared experiences and getting to know each other better, their relationship changes. For example, they could be forced to work together on a project and gradually realize their feelings for each other. Also, the theme of self - discovery can be present. As they interact with each other, they might learn more about themselves and what they truly want in a relationship.
The theme of acceptance is also quite prevalent. They come from different backgrounds and have different ways of doing things. Fanfics explore how they learn to accept each other's quirks and differences, which is an important part of their relationship development. For instance, Karkat's more abrasive personality might initially put John off, but as he gets to know Karkat better, he accepts it as part of who he is.
One great John x Karkat fanfic is 'A Strange Bond'. It beautifully explores their relationship as they navigate the challenges in their world. The author does an amazing job of portraying their personalities and how they grow closer over time.
One plot idea could be them going on an adventure together in an alternate universe within the Homestuck world. They could face new challenges and enemies while also developing their relationship.
Another theme is teamwork across universes. Characters from RWBY and Genlock have to come together, and this brings up issues of trust, communication, and understanding. They have different backgrounds, goals, and ways of doing things. In some fanfics, they initially struggle to work together but gradually learn to appreciate each other's strengths. This theme is important as it shows how different individuals can overcome their differences for a common good.
One common theme is the combination of different elemental powers. Since Naruto has his own set of abilities related to chakra and Korra is an Avatar with control over four elements, fanfics often explore how these powers can work together or create new forms of combat.
Another theme is the journey of self - discovery for both characters. The relationship can act as a catalyst for them to learn more about themselves. For example, the reader might help Karkat become more in touch with his emotions, and in turn, Karkat might help the reader become more confident. It's about growing together in the context of their relationship.
One common theme is friendship development. They often start off not getting along or having misunderstandings, and then gradually form a deep bond. For example, in many fanfics, Karkat's brashness and Gamzee's more laid - back nature initially clash, but over time they learn to appreciate each other's qualities.
Another option could be Tumblr. There are many Homestuck fans on Tumblr who might share or recommend 'karkat x john' fanfics. You can search for relevant tags or follow Homestuck - related blogs to see if they have any suggestions.
One of the themes is teamwork. Since they are often associated with group activities, fanfics may explore how they work together effectively. Also, loyalty is a theme that is frequently seen, showing their loyalty towards each other in different scenarios which can be really heartwarming.
Mystery is a big one. His stories often keep readers in suspense.
One common theme is humanity in the face of advanced technology. For example, in 'The God Engines', we see how humans interact with god - like technology. Another theme is the exploration of different social and power structures, like in 'Redshirts' where there is a hierarchy within a space - faring crew.