I'd recommend checking out 'The Adventures of Nepeta and Equius' on Archive of Our Own. It has a great plot that really brings out the best in both characters.
One of the great things about Nepeta x Equius fanfics is the potential for character growth. We might see Equius becoming more in touch with his emotions through his interactions with Nepeta. And Nepeta could also learn about boundaries and self - control from Equius. Fanfic writers can take these two characters in many different and creative directions in their stories.
One main theme is the clash of personalities. Equius is so rigid and proper while Vriska is more wild and unpredictable. Their relationship is often about how they deal with these differences.
Well, Homestuck does have some characteristics of a visual novel. It presents a complex narrative with visual elements and user interaction. But it also has unique features that set it apart from traditional visual novels.
Well, just from the name, the combination of elements like 'big black zahhak' and 'plumber' with 'equius' is likely to be unique because it's not a common set of things you'd typically see together. It could bring a very different and unexpected story, perhaps mixing different genres or concepts in a way that's not often done in more mainstream fanfictions.
There's a fanfic called 'Equius and Vriska: A New Understanding'. In this, it starts with their typical rivalry but then gradually shows them finding common ground. It's a great read if you like seeing their relationship evolve in unexpected ways.
First, you need to be really familiar with the Homestuck universe and its characters. Understand their personalities and the overall storylines. Then, come up with an interesting plot that fits within that world.
I'm not sure if there is a very specific and widely known fanfiction with exactly that combination. You could try searching on fanfiction - specific websites like Archive of Our Own or FanFiction.net using those exact keywords to see if any relevant stories pop up.
It depends. While the idea of exploring relationships in fanfiction can be creative, the 'lemon' part which usually indicates sexual content in this context can be inappropriate. If it's just a mild exploration of yaoi relationships without being overly sexual, it might be more acceptable in a more mature part of the fandom. But generally, when it comes to the wider audience and the respect for the original work, it's not really appropriate as it can distort the original characters and themes.