Imagine being Harry's sister and going over to Hogwarts for a week and dealing with the problems that he had been facing for a few years of his school years

Sorry if it's really long too I kind of got carried away

Fandom: Harry Potter

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You were running around the school as a group of Slytherins were running after you and let's just say you had enough stamina in you to outrun the entire of them all, but you had a mask on to hide your identity so that's another reason why they didn't know who you were there's only so far that you could go since they knew the place better then you did

You would've asked for help but no one in the school knew who you were since you had no proper uniform on you and well you had pissed off and minorly annoyed some people since you came over but only the people who pissed you off

2 hours earlier

You got up the same time as you would for school but got dressed somewhat smart with a black jeans, red shirt, black hoodie with a small black household crest on the front left on your chest and a pair of Hogwarts shoes to complete the look and you normally wouldn't wear red, but you did it for harry

Once you got told what to and not to do from your parents and his friends, they took you to the fireplace and you got teleported to the school via lupins office since he was the dada teacher that year and he greeted you casually

Once you got the lay of the land from him and the list of passwords for each dorm you put on your custom mask you had for your school since you didn't want people seeing your face and for privacy and personal reasons and put up your hood to block more of your face before heading out but instead of looking for harry first who was currently doing herbology as what his timetable stated you went to the Slytherin dorm

When you got there you nodded to Draco who was just leaving and he was confused before looking at you clothes and knew who you were, Harry's sister but didn't say anything as he watched you for a bit before leaving

"Oh, look a new person to intrude us what do they call you?" a black-haired boy spoke out as he sat in his main chair watching you as well as everyone else in the room, but you stayed silent as you watched the room and its surroundings to get the lay of the land

"He asked you a question you rude bitch" a girl who was sitting on the couch looking at you while cuddling up to a boy about the same height as the first guys but with curly hair

"Whose Tom and Mattheo riddle?" you asked knowing your voice would be muffled so they didn't hear your real voice, but you knew it would be heard clearly nonetheless

"Who wants to know?" someone from the side spoke as he walked up to you but as he was about to lift up your mask before he could touch it you punched his stomach and then kicked him to the floor before standing up straight again

"I won't ask again" you replied to a bit more impatient before the guy sitting in the main chair got up with his glass of whiskey and looked at you

"I'm Tom and that's my brother Mattheo riddle what can we do for you?" he spoke as if he saw someone that could help him for his army as he walked towards you trying to be intimidating and so did the other one watching you wearily but kept their wands by their side in case you decided to hurt them

"This is for Harry and for every family member that your family and who work for him has done this side of the universe" you spoke out and not a second to waste you punched Tom in the face breaking his nose then proceeded to do the same for his brother and anyone else who came to their defense

After half an hour you had beat them up and took their wands before the girl could and bolted out of the room to find harry or someone you knew could help you, but such luck never found you cause when you stopped to get your bearings you saw the Slytherin's you beat up find you let out a huge deep breath before bolting again

And now back to the current time you were still running but decided to hide to the Gryffindor common room so you soon found that and ran inside before they could find you and once you knew you were safe everyone looked at you in a way of 'why is she in here?' or 'who is she?'

Harry watched you for a bit before you collapsed on the floor and rolled onto your back panting heavily with your hand over your heart, so he rushed over and took off your mask and shook his head with a sigh once he saw it was you

"What the hell happened?" he asked as one of the twins got you some water while everyone else was crowding around you to see what was going on with you

"n-never r-run with the Slytherins" you panted out as you tried to catches your breath causing harry to chuckle amused as he sat next to you "I h-had to defend your honor so I beat them up but only got a few bruises, but I'll be fine they would be looking for someone with blonde hair and a red mask" you added after sitting up and rested your arm on your knee while harry rested a hand on your back

"And now you've got brown hair and no mask" Hermione replied shaking her head amused as well before leaving to do whatever

"wicked" the twins replied in unison

"I'm Harry's sister if some of you don't know and I'm here for the week cause of sibling week" you replied taking the drink off the twin and took a sip of it to try and calm yourself down

"I was wondering what you were doing in my common room" Draco chuckled as he kneeled in front of you "if you needed help, I would've helped you" he added lightly resting a hand on your knee

"And get you hurt nah harry would kill me if one bruise got on you" you chuckled amused "and besides I made I from one side of the castle to the other without getting into another fight with them I call that and achievement" with added with a single nod before slowly getting up with harry and Draco and made it to the couch and casually got introduced to everyone

When lunch came around you all went to the great hall, and you sat with harry and his friends having dinner, but you mainly had stuff you haven't tried or seen before which harry didn't mind before watching the Slytherin come in with bruises and cuts all over their faces and sat at their seats making the whole room turn into chatter

"You really did a number on them" Fred replied with a high five under the table and George grinned at you and patted your shoulder

"Evil people get what they deserve" you replied taking a sip of the pumpkin juice which you didn't like so you set it down "karma is a bitch" you added before drinking the water harry poured for you since he saw you didn't like what they had to offer

"True and we normally prank them or the teachers" George chuckled as he started eating

"who's the brown haired one next to Mattheo?" you asked as you eyed the Slytherin table and the glared at you since you never looked away from it unless you went to eat

"Pansy Parkinson, she likes Draco Malfoy and despite him being in an arranged marriage with harry she still tries to get with him and if she can't get him, she tries to sleep with him" Hermione explained from next to you as she flicked the newspaper, she was reading making you nod slightly

"Is there anyone else who wants him I mean come on he's already taken for the love of god" you asked with a small scoff as shook your head in disbelief

"Yes, Astoria Greengrass and she is just as bad as she is to the point where she made up a whole story on how I cheated on her with harry for 3 years as if she was the one, I was originally dating and arranged to marry with" Draco spoke as he sat down next to harry and pecked his cheek softly not caring if people saw them

"My next victims" you smirked evilly as you eyed the table and Tom gave you a glare despite having a bruise under his eye not liking someone in the school who he didn't know about, so he gave an order to someone next to him "who's that?" you asked

"Theodore Nott" Draco replied as he gave you the names for everyone else in the table and some for the other tables in case you needed the names and throughout lunch you and the rest of the table chatted about the school and who to avoid though you didn't want to do that while you were here

While Harry did his lessons while you sat nearby empty desk typing on your laptop doing your homework that they had assigned you while you were there but on the odd occasion you had helped the students around you despite not going there you still read books and learnt from your parents about what is what as well as learning how to use a broom in case you did decide to go there

At the end of the week

You had taught the riddles about messing with the houses that they didn't do anything to them while also putting them in their place cause the still couldn't figure out who was the person who beat them up but when you were about to leave the front doors the group of Slytherin's you were pestering stopped you

"Alright who the fuck are you" Tom glared as he looked at you with disgust

"I forgot we haven't properly met" you turned with a smug smile "hi my name is Y/N Potter and I'm the eldest one by about 20 minutes, I don't go here due to the fact I rejected my letter and also I'm the one who kicked your asses without the use of a wand" you introduced as you held out your hand to them who looked a mixed of shocked and annoyed

"Y/N come on your going to miss the train!" Harry called from the courtyard making you chuckle a bit before jumping slightly in your step and ran over to Harry and handed you your broom before racing to the train that was a 10-minute flight away from the main courtyard

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Sorry for the abrupt ending but I didn't know what to do to finish it off, but I hoped you liked it nonetheless