One common theme is the overcoming of differences. Ruby and Weiss start off with a somewhat rocky relationship in the show, so in fanfics, their kiss might symbolize them getting past those initial disagreements. Another theme could be the discovery of new feelings during a time of crisis. For example, they might be in a battle together and realize their love for each other in that intense moment.
There are some. Tumblr also has a RWBY fan community where people sometimes share or recommend fanfics that involve Ruby and Weiss kissing. You might also want to join RWBY - related forums or groups on social media platforms. Fans often discuss their favorite fanfics there, and you can get some good suggestions. But be aware that not all fanfics are created equal, and some might not match your taste.
I'm not really into fanfics that involve such unusual pairings like 'futa'. However, in general, when it comes to RWBY fanfics with Weiss and Ruby, they often explore different aspects of their relationship. If the 'fanus' element is added, it could potentially introduce new storylines related to the world - building of RWBY, such as how the Fanus interact with these two characters.
One common theme is friendship. Since Ruby and Weiss are from different backgrounds in the RWBY world, their journey of becoming friends is often explored. They learn to overcome their differences and support each other.
There's also 'The Ruby - Weiss Alliance'. This fanfic delves into how Ruby and Weiss team up to solve a mystery within the school. It's full of action and their interactions are really well - written, highlighting their trust in each other.
A great fanfiction plot could be that Faunus Ruby is being discriminated against by some students at Beacon. Weiss, who is used to a world of privilege, decides to stand up for Ruby. This act of kindness makes Ruby trust Weiss more. As time passes, they find themselves relying on each other more and more during combat and in their studies, and a beautiful friendship (or maybe something more) starts to develop.
One great 'rwby ruby x weiss fanfic' is 'A New Bond'. It beautifully explores their relationship as they face challenges together in the world of Remnant. The author does an excellent job of depicting Ruby's determination and Weiss's grace, and how their personalities complement each other.
You could also look at some RWBY fanfic aggregator websites. These websites collect and categorize fanfics from various sources. Although they might not have a dedicated search for the exact title 'A Shared Mind', you can still search for Weiss and Ruby fanfics and then skim through the descriptions to find ones that might be relevant to the shared mind concept.
Think about their relationship. Are you focusing on their friendship or creating a romantic angle? If it's friendship, show how they support each other. For a romantic plot, build up the tension gradually. You can also add elements from the RWBY universe like Grimm battles or huntsman training to make the story more engaging.
One common theme is the development of their relationship from initial animosity or indifference. In many fanfictions, they start off not getting along well in the team, and then as they go through various challenges together, their feelings change and lead to the kiss. It shows how they grow closer over time.