Perhaps she's a girl who lost her family in a tragic accident and is now haunted by the memories. In the fanfic, she might be on a journey to find peace. Along the way, she meets different characters, some of whom try to use her sorrow for their own gain, while others genuinely want to help her.
The plot might involve her having a special power that is linked to her sorrow. She could be unknowingly causing things to wither and die because of her inner turmoil. As the fanfic progresses, a young boy might befriend her and start to uncover the secrets behind her sadness.
Maybe there's a mysterious figure in the shadows that has some connection to the girl's past. This figure could be an old acquaintance or someone who has a vendetta against her family. Their interactions with the girl would be a major part of the fanfic.
The plot could involve a Cartwright character getting injured in a battle, feeling the pain of the wound and the sorrow of potentially not being able to fight again. Then a healer or a friend could come and offer comfort by treating the wound and giving words of encouragement.
Well, it could be about Gaara being a girl and having to face different challenges in the ninja world. Maybe she has to deal with different expectations from her family and the village compared to if she were male.
Well, it could be about a girl who has special powers and she uses them to save her town from an evil force. Maybe she discovers her powers gradually throughout the story.
It could be about a girl who finds herself in a strange situation where she is coiled by a snake. Maybe the snake has some magical powers and is protecting her from an unseen danger.
In a 'sonic becomes a girl fanfic', the story could start with some kind of magical or scientific accident that turns Sonic into a girl. She then has to navigate her world with a new body. She may discover new abilities or limitations. Perhaps she teams up with female characters in the Sonic universe more often now and they form a strong girl - power group to take on the bad guys. There could also be a focus on how Sonic adjusts to her new appearance and how it affects her relationships with characters like Knuckles, who may have a different dynamic with her now.
The plot could involve Gaara trying to hide her gender while still being a powerful shinobi. Maybe she has to constantly worry about being discovered during battles or in interactions with other ninja. For instance, she might have to come up with excuses for not sharing certain spaces with male ninja.
Well, in a 'freed turns into a girl' fanfic, the plot might start with an experiment gone wrong. Freed was perhaps trying to enhance his magic power and something in the experiment caused his physical form to change to that of a girl. He would have to deal with the reactions of his guildmates. Some might tease him, while others would be more understanding. And he would also face challenges like how to adapt to the new body's physical limitations while still being able to participate in guild activities.
One possible plot could be that the girl is lost in a mythical realm where Cerberus guards. At first, she is scared of Cerberus, but gradually, through some kind of magic or special connection, Cerberus becomes friendly towards her and gives her a lick as a sign of acceptance.
Well, perhaps in the fanfic, a magic spell gone wrong turns Harry into a girl. He then discovers that being a girl in the wizarding world gives him a whole new perspective. He could start noticing things he never did before, like the way female wizards are treated in certain classes or by certain teachers. His relationships with other characters also change. For example, his relationship with Ginny could become more of a sisterly bond at first as he adjusts to his new form.