I'm not sure which specific 'Arnya Fromel' fanfic you are referring to. But if it's about analyzing a short brunette character like Arnya, we could start by looking at her character traits. Maybe she's a strong - willed character with a mysterious past. The fact that she's a short brunette might be used to give her a unique physical appearance that stands out in the story.
Arnya Fromel, being a short brunette in the fanfic, might have certain quirks. Her shortness could make her more agile perhaps, and her brunette hair could be a part of her identity that she takes pride in. Maybe she uses her unique appearance to her advantage in the story, like sneaking around unnoticed because of her small size.
One of the great Danmachi fanfics is 'A Different Perspective'. It offers a fresh take on the characters and their relationships within the Danmachi universe. The story delves deeper into the backstories of some minor characters and makes them more significant. Another good one is 'The Unseen Adventures'. It takes the characters on new quests that are not in the original story, adding more excitement and mystery.
The Danmachi light novel is finished. The author completed the series, providing a satisfying conclusion to the adventures and developments of the characters.