Quirrel's pov:

I enter a room of flying keys and see the broom leaning against the wall near the door to proceed forward and smirk at how useless it is to put a broom in the room when there is magic to be used.

Voldemort: use accio on the key and proceed to the stone!

I cast accio on the key but the spell doesn't work at a fire comes from the key and the fire slams into my wand hand and the other keys shoot towards me while the key I need flies away from my grasp forcing me to use the broom.

After catching the key and opening the door to get to the next room I'm met with a metal arena room with blood red light flowing up and down the walls. As I walk away from the door a metal door closes covering it and glows with a red light and a dark laugh echoes around the room as I notice that a part of the wall is sticking out enough for someone to stand on. I notice something shimmer a little bit on the platform.

Y/n pov:

I deactivate my camouflage once quirrell looks up at me.

Y/n: greetings quirrell and voldemort, welcome to my challenge.

I jump down to the ground next to the door to continue forward and pull out my wand.

Y/n: it is here you will be broken. It were you will give up your secrets.

(A/n: One of my favorite cut scenes in halo infinite)

Quirrell: crucio!

I feel the curse hit me as I feel boost of power from it instead of pain which I use to blast lightning at quirrell from my finger tips.

Y/n: so misguided and power hungry to think that you can beat me.

Quirrell: avada kadavra!

I flick my wand lazily to the side deflecting killing curse to the otherside of the room and sending a stun spell at him that he blocks and casts the killing curse again and I grab it with my free hand which he then uses bombarda and the cutting spell. The explosion catches me off guard and he slices the fingers on my left hand off then blasting me into the wall. I look into voldemort's mind and see that he has looked up something called horocrux in the restricted section of the library. As I become slash's metal beads upon impact with the wall from the blast since I feel Lily's mark is at the room fluffy is in.

Hermione pov:

Once we get inside the next room that has that same metal as y/n's common room me and Lily realize that Hagrid has the order of challenges right. We all take a few steps away from the door to go back when we hear metal shift and a metal door closes covering the the way back. As me and lily look around we notice a bit of the metal wall sticking out and metal beads on the ground and we both look at each other in realization that it's either y/n or y/n has Slash as the challenge. Ron and harry walk forward and slip on some of the metal beads and lands on his back hard.

(A/n: the way marv and Harry slipped on the cars is ron and Harry fell)

Once Harry and Ron stand up we hear a tiny beep as we see a hologram of an elite.

After the hologram fades away Ron picks up one of the beads.

Ron: what is this?

Lily: Ronald put that down!

I notice that the beads are building Slash as the bead in Ron's fingers spins fast enough to give Ron a slight rope burn feeling. As the others look up they notice the beads are gone.

Harry: uh where are the beads?

Ron: maybe us tripping means we passed the challenge?

We hear a metalic trill and chirps as Slash turns enough so we can see him for a second before he turns so he disappears.

He dashes towards us and scratches Ron and Harry as me and lily try to stun him. After a few minutes we see a ball of fire in front of the door to continue forward and y/n is standing before us and he opens the doors.

Y/n: you can either continue towards the stone and the true thief or go back to the safety of the school and I'll go deal with the thief.

We continue forward with y/n following us. When we enter the next room I notice y/n lean against a wall near the next door to proceed forward.

Y/n's pov:

Hermione: I don't like the look of this room.

Harry: where are we?

Lily: maybe it's a graveyard?

Ron: no it's not a graveyard. It's a chessboard.

Lily: look y/n is at the door. Should we go forward?

They look at each other and nod before walking forward. After the pawns stop them Ron has Hermione be a castle on the queen's side, Harry is placed as a bishop, and Ron is a knight.

Lily: what position am I in?

Ron: hmmm uh you will be a-

Harry: a pawn.

Ron: ok

I notice Hermione's eyes widen in shock at how quickly the two idiots give lily the most dangerous position in chess and fear for Lily's safety.

After they finish their chess match against McGonagall, I knew since she told me that she will be in control of the white pieces as her part of protecting the stone, we went to the next part without Ron since he was knocked out. As we enter we get the nasty stench from the troll earlier in the year invading our noses and we see a troll knocked out and we sneak past, but I blast a hole in its head with my cannon just incase it wakes up. We enter a room with seven bottles on a table with a scroll in front of the bottles. When Hermione grabs the scroll black fire blocks the door forward and purple fire blocks the way back to Ron.

After Hermione and lily read the scroll they smile and discuss with each other.

Hermione: ok we got it figured out.

Lily: it's this blue one to go forward to the stone and this purple one to go back to Ron.

Harry: how do you know this?

Hermione and lily: it's a riddle. You don't need magic to solve it because it won't work on it. It requires logic and most wizards and witches don't have an ounce of logic in them.

Y/n: like you Harry.

Harry: hey I do have logic in m...me.

Harry falters under my glare as my left eye glows a faint blue as I show him the times he was illogical.

Hermione: there's barely enough in the blue bottle for two people to go forward, but purple also has enough for two people to go back.

Harry: ok Hermione and l/n go back and I'll go forward and lily stays here incase snape comes this way.

Y/n: your decision is illogical. Hermione and lily go back Harry and I will go deal with the true thief.

Lily: ok that's a better decision.

Hermione looks at us but mostly me worried about our safety before she hugs me tightly.

Hermione: stay safe y/n I don't want to lose one of my first best friends.

Y/n: I'll be ok mione I promise.

She let's go and they drink the purple bottle and hug me tightly then lily hugs Harry then they go through the purple flames as I give Harry the blue bottle. Harry drinks it then walks through the fire slowly. I get annoyed at him so I kick him forward and I walk through the fire calmly and quickly since quirrell and voldemort could have the stone already. We reach a wide stone staircase going going down to a platform with quirrell in front of a mirror. When we reach the bottom quirrell casts the cutting spell at me and slices my left eye beyond repair and I put my left hand on it in pain and get ready to blast lightning at quirrell but he cast bombarda at me blasting me away and I collide with a pillar getting dazed. When I get myself refocused and the ringing fades away I hear screams of pain, I look towards where quirrell was and see harry grabbing quirrel's face and quirrell is the one in pain.

Y/n: Harry move!

Harry backs away from quirrell and grabs a red stone and trips on his own feet causing me, quirrell, and voldemort to laugh at him before quirrell screams in pain again as he still feels the burning feeling from Harry grabbing him. I change my metal hand into the cannon I acquired earlier in the year and aim it at quirrell.

Quirrell: I'll get you for this pot-

I fire the cannon at quirrell and he crumbles to dust and ashes.

I walk over to Harry and help him up and I walk to the mirror to see what I'll see. When I look in the mirror I see that someone with familiar bushy hair walks forward and stands next to me but she looks older and holds hands with an older version of myself and she holds up three fingers as I get small vision of me and Hermione going on dates. When the vision ends she holds up four fingers and she kisses my older version. I hear a yell behind me and see a bit of dust and ash fly towards Harry who has his back towards it.

Y/n: potter behind you!

Harry turns around as it slams into his chest flies away and he drops the stone as I fire some shots at it.

When it gets away Dumbledore shows up and reaches to grab the stone but it flies to my metal hand and hovers in the air. I grab a metal container I made for it from my belt and put the stone inside it.

I follow Dumbledore out and to the hospital wing where Hermione is pacing and lily look worried.

Hermione's pov:

When Dumbledore and y/n enter with Harry on a floating stretcher I rush towards y/n and hug him since I was worried about him. I notice that his left hand is badly injured and his left eye is missing so I guide him towards a bed and help him lay down.

Y/n: ravage eject the doctor.

I see ravage appear and open his chest and a little spider like robot comes out and I help the little robot get on the bed as it crawls towards y/n's face and scans him.

The doctor: hmm eye is missing so you will need a replacement. You need that spell that has the metal attach to your left hand.

Madame pomfrey performs the metal spell and it attaches to y/n's left hand and it is shaped like claws. The doctor gets a metal eye from one of y/n's soldiers and puts it in and it glows a faint blue as it is syncing with his mind while his right eye remains its beautiful obsidian black color. When the metal eye finishes syncing it glows an electric blue like gellert grindelwald's left eye.

(A/n: that is y/n's metal eye)

🔥 🔥🔥🔥🔥🔥time skip🔥🔥🔥🔥🔥🔥

After a few days it is the end of year feast and y/n is sitting in his throne at the staff table and I'm sitting with Harry and Ron. We are smiling at each other while we eat but y/n is looking at Dumbledore knowing that he is showing favoritism to harry by giving lily one point to gryffindor, Slytherin, and ravenclaw but Harry sixty points. After the feast we go to the platform to board the train to kingscross station and sit in a compartment with Lily and y/n as we talk and y/n gives me a hologram disk to communicate with him and lily. When we get to kingscross station I introduce lily and y/n to my parents before I go home.

Monica: so that is the metal armed boy that you mentioned in your letters.

Hermione: mom!

I cover my face with my hands while groaning in embarrassment.

Y/n's pov:

I step through the barrier and use my metal eye to scan a sport car and I go through a fire portal to my home.

(A/n: that is the car y/n scanned and it is a Lamborghini aventador. It will be used in either between second and third year or between third and forth year)