The fact that her hair is in a bun might also play a role. It could be a cultural or traditional style in the fictional world she belongs to. When she's kidnapped, her captors might be disrespectful of this style, which angers her and gives her the motivation to resist. The bun could also be used practically during her captivity. For example, she might hide small objects in it to help her escape, like a lock pick or a small note.
Such a description might be used to make the character stand out in a fanfiction. He could be a unique character in a fantasy - based fanfic too. For example, he could be a wizard who has adapted to some modern - day human habits like wearing a hair tie on his wrist. His bun could be a way to keep his long hair out of his face while he's performing magic.
One idea could be that Felicity is kidnapped by a rival of her friend. Her hair in a bun might be a key detail, like the kidnapper uses it to hold her captive in some way, perhaps by tying her bun to a post. Then her friends have to figure out where she is based on the few clues she manages to leave behind, which are related to her bun.
I'm not sure specifically which 'long hair bun drop story' you mean. There could be many stories related to a long hair bun dropping. It could be a simple incident where a girl with a long hair bun was running and it dropped, causing her some momentary embarrassment. Or perhaps it's a more symbolic story in a particular culture or folklore where the dropping of a long hair bun has a special meaning.
Once upon a time, there was a girl with long hair. She loved to make a bun every day. One day, she went to a ball with her beautiful long hair bun and met a prince there. The prince was attracted by her unique bun style and they started to dance. It was like a fairytale come true.
In the fanfiction, Felicity with her hair in a bun might find a way to escape on her own. Since her hair is in a bun, she could use the hairpin or ribbon in it to pick a lock or create a distraction. Once she escapes, she has to evade the kidnappers' search parties while trying to find her way back to safety. Along the way, she might meet some unexpected allies who are drawn to her because of her unique appearance, including her bun.
In a story, the long hair bun drop could symbolize a loss of control. Just like the bun is a neatly organized style, its dropping might mean that the character is losing their grip on a situation, perhaps in their personal or professional life.
In a fanfiction scenario, the girl on the waterslide with the messy bun might be a character from a popular book or movie. She could be on the waterslide as part of a challenge or a dare. Her messy bun could be a symbol of her carefree and adventurous spirit. For example, she might be a young wizard on a waterslide in a wizard - themed amusement park, using her magic to make the slide even more exciting.
It can represent a shift in her mood. A bun might mean she's feeling more focused, like when she's trying to solve a problem at the inn. It's a simple change but can convey a lot about her state of mind.
There are many fanfiction platforms out there, but it might be a bit difficult to specifically find ones with this exact description. You could start by looking at platforms like Archive of Our Own (AO3). Try searching for tags like 'Male with hair tie' and 'Hair in bun' along with the fandom you're interested in. For example, if it's a Harry Potter fanfic, add 'Harry Potter' to the search terms.