(y/n) - your name

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Ron notices some pieces missing and explains to his friends what they need to do and where to go, Harry taking the Bishop's square and Hermione taking the Queen's side castle as he takes the knight's spot on a horse.

"What happens now?"

"Well, white moves first, and then... we play." Ron explains to Hermione on top of the horse, a white pawn making its first move and he studies the game for a minute. Hermione was worried about this being like a real wizard's chess, Ron calling out for a pawn to move to test that theory. A black pawn moves forward, diagonal to the white pawn and it raises its swords to smash the black one. All four kids jump at the impact with shock, a gloomy look on their faces. "Yes, Hermione, I think this is going to be exactly like wizard's chess!" Hermione and Harry slowly look at Ron, hoping he doesn't get them killed.

The game continues as game pieces destroy game pieces and (y/n) gets extremely worried for her friends, using her powers to shield all three of them from harm. Hermione, Ron and Harry feel a sudden rush of warmth, Ron feeling determined to end this and sacrifice himself.

"Wait a minute." Harry caught onto his friend's play as well.

"What is it?" Hermione asked, confused.

"Ron's going to sacrifice himself!" The kids argue with each other about this, trying to find another way but Ron stops them.

"Do you want to stop Snape or not? Harry, it's you that has to go on. I know it. Not me, not Hermione, you." Harry nods hesitantly at his friend as he looks at the queen piece for the final move. "Knight... to H-3." his horse moves forward, slides and stops. "Check." The Queen turns and advances towards Ron, him breathing quickly in fear and clutching the steel reins tighter. The Queen stops and he waits for a moment until she raises her sword. (y/n) quickly pulls Ron to safety against the floor before the Queen smashes his horse, Harry and Hermione screaming out for him. Harry quickly stops Hermione from running to him since they were still playing the game and she sets back in her spot while glancing over at Ron with worry.

Harry walks the diagonal in front of the King. "Checkmate." The King's sword falls onto the ground in victory towards the kids and they rush over to Ron who gasps loudly and sits up straight.

"RON!" they scream out for him and he checks himself for any injuries.

"How in the bloody world!? I thought I was a goner!" (y/n) quickly drops the shields on the kids, leaning back against the pillar as she rubs her head to ease the pounding headache.

"You might still be injured." Harry says, looking at Hermione. "Take him to the hospital wing and then go to the owlery. Send a message to Dumbledore. I have to go on."

"You'll be okay, Harry. You're a great wizard, you really are." Hermione says confidently.

"Not as good as you." he murmurs back.

"Me? Books and cleverness? There are more important things. Friendship, and bravery." Hermione smiles at Harry and he smiles back before standing up as she helps Ron up. "Harry, just be careful." Hermione says before she and Ron walk away to the exit. Harry sighs out, turning around and walking towards the door as (y/n) makes herself invisible again, following him. He walks down a flight of stairs slowly while she hovers above him, the boy wincing when he feels his scar burning. The kids end up seeing a man standing in front of the Mirror of Erised once they reach the steps, stopping short when the man turns around.

"You?" Harry was confused when he saw Quirrell instead of Snape, thinking it was the potions professor while (y/n) landed down next to him. Harry questions what happened at Quidditch and the Hufflepuff rolls her eyes when the villain reveals their master plan in a dramatic speech.

"And trust me, if Snape's cloak hadn't caught fire and broken my eye contact, I would have succeeded, even with Snape muttering his little countercurse!"

"Snape was trying to save me?" Harry gasps at the realisation.

"I knew you were a danger to me right from the start. Especially after Halloween." Harry realised it was Quirrell who let the troll in but he wasn't the one who stopped it.

"But I didn't stop the troll..." he mutters and the professor looks at the boy in confusion, tilting his head as he listened to the whispering and continued with his dramatic speech of Snape not being fooled by him.

Quirrell turns to the mirror and Harry winces as his scar burns again. "He rarely left me alone. But he doesn't understand. I'm never alone, never." the professor looks into the mirror, wondering what it does but he soon finds out it lets him see what he desires. "I see myself holding the stone. But how do I get it?"

"Use the boy." an unseen inhumane voice hisses out, Harry looking around in confusion and wondering where the voice is coming from.

Quirrell turns to Harry and yells at him to come to him, the boy jumping in fear and slowly walking towards the professor to stand in front of the mirror. "Tell me... what do you see?" Harry looks into the mirror and for a few seconds, sees him standing next to Quirrell then his reflection reaches into its pocket and pulls out a gleaming red ruby, the Philosopher's Stone. He stares in amazement as his reflection smiles and winks, then puts the stone back in its pocket. He feels his pocket and realizes the Stone really is actually in his pocket, then looks up again to not reveal it to Quirrell. "What is it? What do you see?"

Harry looks at the professor, then back at the mirror, determined not to let Quirrell know that he has the Stone so he lies. "I'm shaking hands with Dumbledore. I've won the House Cup.

"He lies." the unseen inhumane voice sneers and the professor yells at the boy to stop lying. "Let me speak to him." the unseen voice mutters out and Harry backs away quickly.

"Master, you are not strong enough."

"I have strength enough for this."

Quirrell reaches up and starts unwrapping his turban as he turns so his back is to the mirror. Harry turns toward the staircase into the room, wondering whether he should try to escape, then turns back towards the professor again. He is almost finished unwrapping his turban, save for a piece covering the back of his head. Finally, he removes the turban, revealing a scary-looking chalk-white face... Voldemort.

He cranes around and opens his eyes. "Harry Potter, we meet again."

"Voldemort..." Harry realises who this was, (y/n) clasping a hand over her mouth to not gag at the disgusting creature. His voice grates her ears and she covers them in pain from his annoying monologue.

"But there is something that can, something that, conveniently enough, lies in your pocket." realizing Voldemort is referring to the Philosopher's Stone, Harry turns and runs back up the stairs to escape. "Stop him!" Quirrell snaps his fingers, instantly causing firewalls to block all the exits. Harry gets trapped in the room and (y/n) shrieks out as she stumbles away from the fire, falling into the room with Harry.

"(y/n)!?"

"Another pest!" Quirrell hisses and (y/n) quickly takes her wand out while Voldemort tries to convince Harry to join him, to give him the stone if he wanted to see his parents again.

"Harry don't." (y/n) whispers when she sees him take the Stone from his pocket.

"Together, we'll do extraordinary things. Just give me the stone!" Voldemort exclaims and Harry yells at him when the reflection of his parents fade away from the mirror, calling him a liar.

"Kill them both!" (y/n) jumps in front of Harry when Quirrell bombards them with spells, trying to ward them off with countercurses but she stumbles back from each impact.

"No!" her wand goes flying off and she quickly waves her hand in front of her to throw up a wall to protect Harry, red lightning bursting from the ground.

"How!?" Quirrell gasps seeing a witch cast magic without a wand or incantation, sneering at (y/n) as she glares back at him. She quickly grabs Harry by the back of his shirt and he yelps as they fly up to avoid the professor's grasp when he jumps at them, the kids hovering in the air above him.

"Now can we end this cause this is boring." Harry gapes at the Hufflepuff as she sets them back on the ground, her arms glowing with red lightning streaks that crawl up her skin and up her face. "And I want to sleep."

"Enough!" Quirrell lunges at (y/n) as he casts a spell at her, making her stumble back. Harry quickly jumps in front of her, grabbing the professor's hands to stop him. Smoke suddenly furls from under his hand as Quirrell winces in pain, stumbling back away from the boy as his hand crumbles into ash and dust before disintegrating. "What is this magic!?" The professor yells out when he couldn't move, (y/n) curling her fingers into fists to hold him in place and immobilising him.

He screams out in pain as his body crunches and snaps, Harry looking at (y/n) with slight fear. "Harry, use your hands!" she snaps at him and he looks down at his hands, putting them on Quirrell's face.

He screams out in pain, Harry looking on horrified as the professor's face is horrendously burned. Quirrell crumbles as his body completely turns into ash and dust, falling to the floor and leaving only his clothing. Harry gasps as he looks at his own hands in awe, (y/n) dropping her powers and falling to her knees. She desperately gasps for air and the boy rushes to her side after he pockets the stone safely.

"(y/n)! Are you ok!? Where are you hurt!?" he looks over at her as her world becomes dizzy, holding her up as she closes her eyes for a second until everything calms down.

"Yeah... yeah... just-everything was spinning..." she sighs out, breathing in deeply to calm the pounding in her chest. Suddenly from behind, dust clouds form from Quirrell's corpse causing the kids to turn around as the dust clouds form into Voldemort's face. It rushes forward screaming and (y/n) pulls Harry down with her to avoid the cloud hitting them, the kids watching as Voldermort flies away. "Jesus Christ..." she gasps out in relief, laying on the floor before reaching her hand out to summon her wand into her grasp. Harry quickly moves to avoid being hit by the flying wand, looking at (y/n) with wide eyes.

"How!? How do you have magic like that!? Without your wand or saying incantations!?"

"Harry, you can't tell anyone." she sits up, looking at the boy seriously and he looks at her in confusion. "I'm serious. Not to the professors, not to Ron, Hermione, Hagrid. No one. You were never supposed to find out."

"But why? You could be the most powerful student-"

"-and I would be taken away or killed." this shuts up Harry and he purses his lips, not wanting his friend to get hurt because of him.

"Ok-"

"-Harry this is serious. I don't want to wipe your memory so you have to promise me that this secret between us goes to your grave." she didn't have the ability to wipe memories but fear helps. Harry quickly nods, not wanting to get (y/n) mad. "One more thing," she brings up her pinky and he looks at her with confusion until she takes one of his hands to bring up his pinky. "Pinky promise it." she curls their pinkies together and the boy smiles at the gesture.

"I pinky promise (y/n)."