Mike_Lu
Do not make hermione a transmigrate or who came back from the future, because you will ruin the story, I never understood those fanfic authors who insert other transmigrates and even more when it is only in one world, and literally create unnecessary problems, because almost any world of fantasy already has enough problems, it is only legal when it has transmigration in several worlds and preferably those that have as a stopping point the normal land, like the fanfic "Unlimited Anime Works"