It's also possible that the main character isn't just Ren alone. There could be other important characters who play significant roles alongside Ren. For example, there might be a character who is Ren's guide or an antagonist who tries to stop Ren from fulfilling her tasks or destiny in the 'Hell Girl Ren Story'.
Since I'm not familiar with a specific 'Hell Girl Ren Story', it's hard to say for sure who the main character is. But if it's related to the Hell Girl series, it could be Ren herself. Maybe she's a new protagonist with unique powers or a special mission within the story.
The main character is Hell Girl herself. She is the one who carries out the task of sending people to hell.
The 'Hell Girl Ren Story' could potentially revolve around the themes that are common in the Hell Girl series, such as vengeance, the price of making a deal with the supernatural, and the moral ambiguity of the actions taken. If Ren is a character, she might have her own backstory, like a tragic past that led her to be involved with the Hell Girl's world, perhaps she was a victim who turned into an agent of revenge in some way.
There's no way to tell without more information about the '14 days in hell story'. It might be a young adventurer who got into trouble, or an older person facing an unexpected and difficult situation. The main character could also be a group of people rather than an individual, all experiencing this 'hell' together for 14 days.
Since I don't know the specific '30 days in hell story', I can't say for sure who the main character is. It could be an ordinary person who is thrown into this hellish situation, like a young man or woman.
One common theme is the exploration of their relationship. Since they are both important characters in 'Hell Girl', fanfictions often focus on how they interact with each other, whether it's a friendship or a more complex bond.
In the 'Hell Girl Love Story', Hell Girl is most likely a main character. Her role in the story would be crucial as she is the link between the human world and the underworld. Then there could be other characters like a human couple. One of them might have been wronged in some way, like a woman who discovers her lover has betrayed her. She could turn to Hell Girl for revenge. But as the story unfolds, there could be a change of heart due to love, and this couple's story would be a major part of it. Also, there could be a spirit or some supernatural entity that has a connection to Hell Girl and is involved in the love - related events, either trying to help or hinder the love between the human characters.
One way to find good 'Hell Girl Ren and Ai fanfiction' is to join relevant fan groups on social media platforms. Fans often share their favorite fanfictions within these groups. You can also ask for recommendations directly, and they might point you to some really great works that explore different aspects of Ren and Ai's relationship or their adventures.
There are two possible main characters in the 'shut the hell up teacher story'. One is the student. This student is likely the focus if the story is about rebellion, frustration, or the struggle for respect in a classroom. The other possible main character is the teacher. If the story delves into how the teacher's actions led to this outburst, or how they coped with it and what they learned from it, then the teacher becomes the central figure. Without more details about the story, it's difficult to be certain which one is truly the main character.
The most prominent character in the 'Hell Girl' story is Ai Enma. She is a key figure in this rather dark and supernatural story. Additionally, there are those people who use her service, who are also kind of important as they drive the story forward with their grudges and requests for revenge.
Hell Girl was a Japanese anime about a girl with mysterious powers who could summon all kinds of creatures from hell to help her complete her mission. When the human soul fell into despair, the hell girl would come to the world and save them with her power. The Hell Maiden might face all kinds of challenges and dangers, but at the same time, it might also bring unexpected opportunities.