The main character in the 'girl with a tail story' is likely the girl with the tail. In most stories, the one with the unique feature or situation is the focus. She would be the one driving the plot, whether it's through her attempts to hide her tail, use it for a special purpose, or deal with the reactions of others towards it.
Since I don't know the exact 'girl with a tail story', it's hard to say who the main character is. But generally, it would be the girl with the tail herself.
In some possible 'fox tail girl story' scenarios, aside from the girl with the fox tail, there might be a wise old man or woman in the village. This character could be the one who warns others about the fox tail girl, believing she is a bad omen or, on the contrary, someone who understands her true nature and tries to protect her from those who would harm her. Another potential main character could be a rival fox spirit who is jealous of the fox tail girl's relationship with humans or her special powers.
Erza might be an interesting main character for this fanfic. Given her strong will and combat skills, she could incorporate the guitar into her fighting style. For instance, she could use the guitar as a weapon, slashing enemies with the sharp edges of it while also using its music to disrupt their magic.
The girl is the central character. Then there could be a wise old woman who has knowledge of ancient magic or medicine. And perhaps a group of kids at her school who either bully her because of the tail or become her friends and support her.
The main character in the '88 girl story' is presumably the girl it's named after. However, without more information about the story, we can't know anything about her personality, her age, or what she does in the story.
The main character is the girl. In this story, she could be any girl really. She might be a shy girl who discovers her inner strength when looking in the mirror, or a bold girl who is made to question her bravado. Her character is developed through her interactions with the mirror, whether it's a simple act of looking at her appearance or a more profound exploration of her self - image.
The main character is the girl. But we don't know much about her. She could be a young girl, maybe a student or a working - class woman. All we know is that she is on the train in 2021, and the story likely revolves around her actions, thoughts, and experiences while on that train journey.
In a typical 'cigarette girl story', the main character would be the cigarette girl herself. She could be a girl from a poor family trying to make ends meet in a big city. Maybe she has dreams beyond selling cigarettes, like becoming an actress or a singer, but for now, she's stuck in this job. And through her interactions with various people, she becomes the central figure in the story.
The main character is clearly the girl who has no phone.
Since we don't know the specific 'perfect girl story', it could be any girl. It might be a fictional character created by the author, like a girl named Lily who has magical powers and is considered perfect because of her ability to use them for good.
Since we don't have more details, it could be an ordinary girl. Maybe a school - girl who has a rich inner world and spends a lot of time daydreaming.