One of the best SNK fanfics could be those that focus on the backstories of the characters. For example, a fanfic that delves deep into Levi's past before he joined the Survey Corps. It might explore his life in the underground and how he developed his combat skills. Another great one could be about Eren's internal struggle in a more detailed and alternative way than in the original story. There are also fanfics that explore different relationships between the characters, like a friendship - centric story between Armin and Mikasa that shows their bond growing in unique circumstances.
One characteristic could be its unique art style. SNK is known for its distinct visual aesthetics, which are likely to be carried over into the visual novel. Another might be its storytelling. It could potentially have complex and engaging plots, perhaps with elements of mystery or action.
Krista's significance in 'Attack on Titan' lies in her ability to surprise the audience with her hidden identity and her growth throughout the story. Eren, on the other hand, is crucial as he is the catalyst for many of the major events. His relationship with Krista is part of the web of character interactions that make the story so engaging. They both contribute to the overall theme of survival and the exploration of the truth about the Titans. Krista's character arc is also linked to the broader political and social aspects of the story, just like Eren's actions are tied to the fight against the Titans.
One common theme is power struggle. When characters from different universes meet in a crossover, they often have different levels of power. For example, in a crossover with a superhero universe, the SNK characters might have to deal with the much greater powers of the superheroes, leading to a power struggle.
I'm not sure specifically which 'Krista Allen frat boys story' you are referring to. There could be many stories involving her and frat boys. Maybe it could be about her experiences with frat boys in a social or collegiate setting, but without more context, it's hard to say exactly.
In 'Attack on Titan', Krista and Eren have a complex relationship. They are comrades within the same military context. Krista is initially seen as a kind - hearted and somewhat mysterious figure. Eren, on the other hand, is driven by his strong will to fight the Titans. Their relationship is also influenced by the overarching plot and the various factions within the story. For example, they both play roles in the fight against the Titans and the mysteries surrounding the world they live in.
I'm not entirely sure specifically what 'krista davis fantastic fiction' is about without more context. It could be a genre of fiction created by Krista Davis, perhaps involving elements like magic, adventure, and unique characters.