[HPDM] Scars and Patronuses

Draco Malfoy knows a great many spells. The only one he cannot master is "Expecto Patronum." What is the secret to mastering this spell? Hope and happiness. Harry Potter is a hero to the wizarding world. But he knows there is still so much he has yet to learn. After finding courage, learning to love, and discovering perseverance, what else does he need? To cherish and to find redemption.