Reborn in Harry Potter: My Mission Is to Save Everyone!?

What if every hero survived? Dorothea awakens in the Harry Potter universe with an impossible mission: prevent every tragic death from the original story. Armed with a mysterious system and foreknowledge of the timeline, she must rewrite fate itself—saving Sirius, protecting Fred, and keeping countless others from their canonical doom. But changing destiny comes at a price, and the deeper she interferes, the more the magical world pushes back. Can one transmigrator alter the course of wizarding history, or will some deaths remain inevitable? Her reward for success: the right to stay in this wo…