I think this kind of comic porn is likely to have inappropriate or adult-oriented content. It's not something that's considered appropriate or positive.
There could be a kind teacher who tries to help Bella. This teacher might notice that something is wrong in Bella's life and tries to offer support, like giving her extra food or a listening ear.
Well, it could be that people are drawn to the shock factor or the sense of forbidden content. But it's important to note that such comics often raise ethical and moral concerns.
Perhaps Bella's bad childhood in the fanfiction is due to being bullied at school constantly. She might be an outcast, different from the other kids in some way. This could lead to her having low self - esteem and constantly fearing going to school. The story could then follow her journey of trying to overcome this and find her place in the world.
The main distinction of porn with a story genre from regular porn is the presence of a coherent narrative. Regular porn often jumps straight to the sexual action, while the story genre tries to add some kind of story framework around it. But in the end, both are adult-oriented and feature explicit sexual content.