There is not enough information to determine the author of the 'walker of the worlds novel'. It could be an indie author whose work is not widely known yet, or it could be a relatively new release from an established author under a different genre or pen name.
Since we have very little information about this 'dark walker novel', it's impossible to say who the author is. It could be an indie author or a well - known writer. We would need to do more research, like checking online book databases or asking in specialized book forums to find out.
Yes, there are likely many out there. You can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'Jessie Luke and Jessie kiss' in the search bar, and you should be able to find relevant stories. However, the quality can vary greatly, so you might have to read through a few to find one that really suits your taste.
For Jessie, you can develop her by showing her growth in terms of her relationships. If she's shy at first, show how she becomes more confident around Tony and the other Jessie. Tony can be developed by giving him a backstory. Maybe he has a troubled past that makes him more empathetic towards the Jessies. The other Jessie can be developed by highlighting her differences from the first Jessie. For example, if one Jessie is more artistic, the other could be more scientific, and show how they learn from each other.
One possible plot could be that Jessie and Luke are friends who gradually develop deeper feelings for each other. They might go through some adventures together, face some challenges that bring them closer, and finally share a kiss in a moment of realization of their love. For example, they could be working on a project and start to notice little things about each other that they find endearing.