Dimension Mix-up

Haven't put a disclaimer in a while so I don't own Harry Potter or Hetalia.
This chapter feels like it took a while to upload so I'm sorry about that. Thanks to everyone who helped me with names and outfits and other stuff. Special thanks to Don't Insult Oliver's Cupcakes and Mimi Jones who's name suggestions I actually used.

So the whole 2p Hetalia and Nyotalia works on different dimensions (or in this story it does), so when the walls of the dimensions are thin you can pass through them, like Ollie did in the last chapter, so that's explained now.
Links for character pictures should be posted below but I'm not 100% sure if it will work or not, so please let me know. Just take out the spaces, you'll figure it out.
I do not own any of the pictures featured below. I found them on DeviantART and Google.

deviant art/Smile-Please-269172725
nyotalia addict. tumblr post/84470451520/justnordicthings-pixiv-id-13347048
zerochan .net 1671700

The 5th year Gryffindors were all excited for their DADA lesson this afternoon, after all both Professor Bomdevik, Professor Popescu and even Professor Kirkland had promised it would be a memorable one.
"Professor Kirkland?" Lavender Brown asked. "Why exactly are you helping out?"
"This spell requires three people to perform and Lukas and Vladimir asked for my help."
"Now then." Professor Bondevik came to the front of the class. "This spell requires a lot of old magic and it can be dangerous if performed incorrectly. We are only showing you this spell as a demonstration, under no circumstances are you allowed to perform this on your own."
"Must be some spell." Harry thought. "Moody didn't even act like this with the Unforgivables."
The three Professors then spread out against the magical pentagon that had been drawn out on the floor.
"Santo Rita Meata Mater Ringo Jonah Tito Marlon Jack La Toya Janet Michael Dumbledora the Explorer."

A bright magical light appeared from the pentagon and encased the three professors. The class, blinded by the light, looked away for several moments until it died down leaving...
"Professors?" Harry exclaimed.
Now standing where the Professors used to be were three... women?
The woman closest to Harry was also standing where Professor Kirkland had been, her blonde hair was tied into two long pigtails, she had bright green eyes covered by thin rimmed glasses. She was also still wearing Professor Kirkland's clothes (as the other women were) though the sweater vest was quite baggy on her smaller frame.
One of the other women was standing where Professor Bondevik was. She had waist length blonde hair and like Professor Bondevik she had the same strange hair curl and cross barrette. Her blank blue eyes matched her emotionless face, also like Professor Bondevik.
The final woman was standing where Professor Popescu once was. She had shoulder length strawberry blonde hair and the same blood red eyes as the Romanian Professor, along with the same sharp fang-like teeth.

"What the bloody hell just happened?" Asked... Professor Kirkland? The woman then seemed to notice the situation they were in, and the students uniforms. "Are we at Hogwarts?"
"By the looks of it." Professor Bondevik's female counterpart answered.
"You." The green eyed woman pointed to Hermione. "Where are we and what happened?"
"You're at Hogwarts Miss. We were being taught Defence Against the Dark Arts by our Professors Kirkland, Bondevik and Popescu."
This defiantly caught the attention of the three women, their eyes turned to Hermione with interested.
"Do your teachers happen Vladimir Popescu, Arthur Kirkland and Lukas Bondevik?" The red-eyed Romanian asked.
"Yes..." Hermione answered wearily. "Do you know them?"
"You could say that." The three women looked at each other, deciding what to tell the students. After a few moments the British woman looked towards the class and spoke up.
"We are their female counterparts from another dimension. I am Alice Kirkland , this is Lucia Bondevik and Adriana Popescu." Alice said pointing to each woman in turn.

"There's no way that's true." Malfoy shouted from where he was sat between his bodyguards.
"I'm afraid it is." Alice didn't look very upset with Malfoy's outburst, just annoyed that she had been interrupted. "The boys must have been presenting some kind of spell, and most likely messed it up. Unfortunately my 'brother' was never the best at magic.
"So if we're in their world." Adriana wondered. "They must be in ours."
Lucia let a slight smirk on her face at this comment. "That must be a sight to see."
"Hmm, because of that they must be a lot more desperate to get home then we are. I just say we just wait it out." Alice concluded.
"And what?" Adriana asked. "Teach DADA and, depending on how long we're here, go to the meetings too?"
Adriana's question was met with a groan from Alice. "I hope not. Françoise's 'brother' is even more touchy-feely than she is."
"Whether or not we're staying for long we should still tell the Head,aster about our... circumstances." Lucia suggested, whipping Alice's cringey look from her face.
The bell went then, signalling the end of a non-productive but nether the less interesting lesson.
"I think this is one of the most interesting year we've ever had." Harry told Ron and Hermione as they exited the classroom.
"You can't exactly say any of our years are boring though can you?" Ron laughed.
"True."

The next time the Golden Trio ran into the Magic Trio's female counterparts was at breakfast the next day. They had all changed into something more fitting, and well, feminine.
Alice was wearing a light blue dress, with what looked like an apron on it quite similar to Alice's outfit from Alice and Wonderland. Lucia was wearing the same sailor suit like clothing that Lukas was wearing when they first met him, the only difference was that she wore a purple skirt instead of the trousers. Adriana was wearing a Victorian styled red dress and the hat Vladimir wore had been replaced with a red bow.
Hermione- like the person she is, decided to drag Harry and Hermione over to the new Professors.
"Hello Professors." Hermione started. "We were just wondering if you've found a way to go home yet?"
"Not at the moment." Adriana replied. "We're not that fussed though, it's nice here."
"By the sound of it Arthur is though." Alice added. "He managed to send me a howler earlier."

FLASHBACK

The Magic Trio were in Dumbledore's office, figuring out what to do when a small flash of light appeared over the headmasters desk and a familiar red letter fluttered onto the desk.
"ALICE!" A livid British voice sounded. "GET US OUT OF HERE!" I am stuck ing your dress and Françoise won't stop flirting with me. HELP!" The howler cut off here, strained by traveling though dimensions, but the message was clear. The girls would take as long as possible to go home.

FLASHBACK OVER

"So have you figured out how to go home?" Harry asked.
The reply came from Lucia, a small smirk visible on her face. "Of course, but the boys don't know that."
"It's a simple reversal spell." Adriana butted in. "You just have to say the spell backwards, but because we're not the ones who performed the spell in the first place we can't actually do anything... not that we would anyway.

The Professors stayed for a while. Alice even taught a memorable lesson where a unicorn magically turned Malfoy's hair a bright pink.
It was about a week after leaving when the male Professors finally made it back home. The Golden Trio were in DADA being taught about trolls by Lucia, who just so happened to be friends with one.
"How exactly did you become friends Professor Bondevik?" Hermione asked, captivated by the lesson.
"Well, when I was youn-" Professor Bondevik was suddenly cut of by a bright glow, when it cleared the male Professors were standing in front of the students.
"Vladimir." Professor Bomdevik was the first person to speak up. "You're wearing a dress."
Before Professor Popescu could retaliate Professor Kirkland burst into the classroom- wearing Alice's dress.
"We're home! And we're wearing dresses. Again."
The Professors took ten minutes out of the lesson so they could get changed but when they came back the Golden Trio wasted no time in asking them how their 'adventure' went.
"It was horrible." Was the only answer they got from Professor Kirkland.
"What happened?"

The three countries opened their eyes when the queasy sensation died down, they were met with the sight of the other nations in a meeting. But they were girls.
"What the bloody hell just happened?!" England shouted, but it was only when he stood up when he noticed he was wearing a dress. Alice's dress to be precise. However while on the British female the dress came to her knees, but Arthur was bigger than his 'sister', so of course the dress was shorter on him. Something which France promptly reminded him.
"Bien legs, Angleterre!"
"AHHHHHH!'

"Not much." Professor Kirkland replied. "But like I said it was horrible."

So that's that. Any questions just ask and any suggestions for new chapters leave them in a review. And just for a note the whole brother sister thing was inspired by the Rosalind Lutece from Bioshock Infinite (as was most of Alice's character).
Hope to speak to you soon : )