The Boy Who Lived, The Brightest Witch and The Boy Who Wasn't - Chapter 1 - dragonfly117 - Harry Potter - J. K. Rowling [Archive of Our Own]
archiveofourown.org/works/24410095/chapters/58886953A single conversation between Hermione and Neville in November of their fourth year changed the course of Harry's friendships forever. Eventual HHr.