Harry/Draco. After Deathly Hallows, ignores epilogue. Harry and the gang go back to Hogwarts after the Second War, and Harry is given the chance to do what he refused in first year: take Draco's hand in friendship.

The events that led up to the invention of Sectumsempra. This one-shot was written for the Ollivander's Challenge set by simplypotterheads on tumblr. Prompt: Character of your choice invents a new spell.