Cosy_Bookworm
The Granger Effect is the infuriating process by which Hermione Granger dismantles your worldview one correction at a time. First, she proves you wrong in class. Then she proves you wrong about intelligence, about discipline, about what power actually looks like. And before you know it, she's proven you wrong about her: about Muggle-borns, about rules, about everything you were taught to believe.
The final stage is the worst: you realize you're paying attention not because you want to argue, but because you want to listen. You start measuring your own thoughts against hers. You notice the way her voice changes when she's explaining something she loves. And somehow, without flirting, without trying, without mercy, she makes you fall in love with her.
That is the Granger Effect: losing every argument, every certainty, and eventually, your dignity... to a girl who never on intended to conquer you, but did anyway.