I love Harry Potter. I give full credit for the story and characters to J.K. Rowling. This is a one shot of the scene where Harry finds the sword of Gryffindor, from Severus's point of view.
It was a quiet winter night. There was no wind moving through the trees, no sound indicating the presence of living things. The cold had driven them into holes and dens, and they slept silently for the winter months. Only one creature crept through the woods, treading carefully and purposefully. A black figure peered around a bare tree trunk at a tiny tent in the distance.
Severus Snape drew his wand from inside his robes, his movements blending seamlessly with the night. He closed his eyes. For her. He had worked tirelessly behind the scenes as an agent of good to combat the darkness of this world, but tonight he felt the presence of the woman he loved, the one who had been in his heart all along, and he had been too stupid to heed her light of love and warning until he was too late to save her. Tonight, he would lead her son to the weapon he needed to make sure her death was not in vain.
"Expecto Patronum."
A silvery light grew from the end of Severus's wand, taking the shape of a doe. She blinked benignly at him before turning towards the tent some ways off. Severus kept his wand trained on her, guiding the apparition to the boy. In a moment, Harry appeared, cautiously following along behind the doe. Severus closed his eyes again in concentration, focusing on leading the boy to the small pond where he had hidden the sword of Gryffindor.
In due time he lowered his wand. He was confident that Harry would know what to do. Regret filled him as he thought of the years wasted despising the son of his enemy instead of cherishing him as the son of his best friend. Severus knew he was a bitter man, but some hope stirred in his heart that things could still be made right. He knew he had done wrong by the boy and his friends many times; he knew he had done worse things in the name of a man he now knew to be altogether evil. He knew that there was little hope of redemption for himself, but Severus also knew that that made it all the more important that he aid the boy now. Dumbledore had died believing that Harry was the best chance they had against Voldemort, so Severus believed it too.
He stirred from his musings at the sound of footsteps. The boy was returning to the tent, sword in hand, and with Weasley in tow. Good, Severus thought. Harry needed his friends; that was a role that Severus could not fill for him. Satisfied with his work, Severus slipped away as the sky began to turn grey. When he was safely out of range of the campsite, he turned on the spot and disappeared with a crack.
Soon, he thought as he returned safely to Hogwarts. Soon enough, all will be well.