I'm not entirely sure, but it's very likely. TvTropes is a comprehensive database for all kinds of fictional works. Given Konosuba's popularity, especially in the anime and light novel world, it would make sense for there to be a section about its visual novel on TvTropes. You could check by searching for 'Konosuba visual novel' on the TvTropes website.
Atalanta was a great huntress in Greek mythology. Her story begins with her being abandoned by her father. However, she was raised in the wild and became an excellent hunter. Regarding marriage, she set a very difficult condition for her suitors - a footrace. If a suitor lost the race to her, he would lose his life. Many brave (or perhaps foolish) men tried but were no match for her speed. Then came Hippomenes. He knew he couldn't beat her in a normal race. So, with the aid of Aphrodite, he got some golden apples. These apples were used to distract Atalanta during the race. When she stopped to pick them up, Hippomenes got ahead and won the race and the right to marry her.
The Calydonian Boar Hunt is also a significant event in the Atalanta short story. She participated in this hunt along with other heroes. It demonstrated her hunting skills and her place among the great adventurers. Also, her upbringing, which was somewhat unusual as she was raised by bears, is an important aspect of the story.
I'm not sure specifically as I haven't read that exact fanfic. But it might involve Percy being trained in some skills, perhaps combat or survival skills, by Atalanta. It could also include elements of adventure and character development as Percy learns from her experiences and teachings.
A common theme is the exploration of their heroic natures. Since both are well - known heroes in mythology, fanfictions often show how they handle challenges and adversaries. Another theme is the relationship between them, whether it's a friendship, a rivalry, or something more romantic.
Well, to write a story with TV Tropes, you need to explore the vast collection of tropes available. Consider the mood and theme of your story. If it's a mystery, the 'Red Herring' trope can be useful. When starting, think about how these tropes can interact with each other. You can also use character - related tropes like 'The Smart Guy' to develop your characters. Don't be afraid to mix and match, but also ensure that there is a logical flow in your story so that it doesn't seem too disjointed.
Since I'm not familiar with this exact 'tvtropes a ghost story' in detail, it could be a collection of examples of ghost stories on TV Tropes. It might show how different cultures approach ghost stories, like the Western idea of a spooky cemetery ghost compared to the Asian concept of a more family - bound ghost. It could also look at how modern ghost stories have evolved from the traditional ones, perhaps in terms of the settings (from old mansions to modern office buildings) or the way the scares are delivered.
The main characters would be Percy and Atalanta. Percy is probably the protagonist who is undergoing training. Atalanta, on the other hand, is the one with the knowledge and skills to train Percy. There may be other supporting characters as well, but without reading the fanfic, it's hard to say for sure.
Character development is a key element. You want to see how Atalanta's character evolves in the new crossover setting. For example, if she's in a modern world crossover, how does she adapt to technology? Another important aspect is the plot. A good plot should be engaging and make sense within the context of the crossover. For instance, if it's a crossover with a fantasy world, the plot should blend Atalanta's skills with the rules of that fantasy world.