Yes, there are quite a few out there. You can start by looking on fanfiction websites like Archive of Our Own. Some focus on their adventures together after the events in the original story, exploring how their relationship deepens as they face more challenges.
The two main characters are, of course, the Goblin Slayer and the Priestess. The Goblin Slayer is a stoic and determined character, focused solely on eradicating goblins. The Priestess is a young and devout girl who teams up with the Goblin Slayer and provides support with her magic.
One common theme is growth. Both characters grow, with the Priestess becoming more experienced and the Goblin Slayer perhaps learning to trust others more. Another is protection. The Goblin Slayer is always protecting the Priestess, and this is often a central part of the stories.
There are some. Some fanfictions might center around their teamwork, like how they support each other during battles against goblins or other threats. These often avoid any inappropriate content and instead build on the characters' personalities and the world they live in.
One of the best aspects is the character development. We can see how Priestess becomes more confident under Goblin Slayer's influence, and how Goblin Slayer may soften a bit due to Priestess' presence. It's interesting to explore their relationship in a pure, platonic way.
Well, one interesting plot is how the Priestess overcomes her initial fears. In the novel, she starts as a rather timid character but gradually grows bolder in the face of danger. Another plot point is the unique relationship between the Goblin Slayer and the Priestess. Their interactions, where he is so single - minded in his quest to slay goblins and she tries to understand his motives better, are quite engaging.
Goblin Slayer manga is indeed ongoing. It continues to captivate readers with its unique plot and character arcs. The creators are committed to bringing more exciting content.