A Magical Rivalry

A/N: Hey, I'm back! I'm really so sorry for not posting anything for such a long while, so here's a chapter fic! And well, feel free to call me crazy, because this time it's an Okikagu fic set in a Harry Potter AU. Heck, even I thought I was crazy when I began to write this, but I actually found it rather fun! I guess almost everyone here has read Harry Potter, so I devoutly hope I'm doing justice to both Harry Potter and Gintama. Anyway, enough with my airy blabbering, and onto the story!

Disclaimer: Obviously, I don't own either Harry Potter or Gintama. I wonder why I have to write this down….

Chapter 1

Thick grey smoke spewed out of the Potions classroom, along with the disgusting odor of rotten eggs and the acrid smell of something burning. Al the students had run outside in panic, their clothes splattered with acidic green goop. Their faces displayed annoyance, anger and strangely, resignation. After all, this was quite a common occurrence whenever Gryffindor and Slytherin ever shared any class together. Especially when those two were present in the classes.

'Those two' being a red haired girl with bright azure eyes and a sandy haired boy with bored crimson eyes, who were being scolded severely by the teacher at the moment.

"HOW MANY TIMES HAVE I TOLD YOU TWO NOT TO FIGHT IN THE CLASS?! LOOK AT WHAT YOU'VE DONE NOW!"

"But Gin chan, it's this sadistic jerk who started it, not me! He called me a pig! And he was the one who dropped the Filibuster fireworks into my potion!"

"Oi, China brat, that was only after you dumped leeches into mine! And besides, it's the truth anyway, so why are you so upset?"

"WHY YOU-"

"BOTH OF YOU SHUT UP! YOU'RE BOTH EQUALLY AT FAULT FOR DESTROYING MY JUMP!"

"I can't believe an adult like you even reads Jump, Danna. Be ashamed."

"I hate to say it, but I do agree with the Sadist on this one, Gin chan. Do some productive work once in your life, uh huh."

"THAT'S IT! BOTH OF YOU, AT MY OFFICE, NOW!"

"Excuse me, Gin san, but I think you're focusing on the wrong issue here…"

"Shut up, Glasses, before I dock fifty points from Hufflepuff. And you two, don't smirk; hundred points each from Gryffindor and Slytherin for ruining my Jump, and ah, for ruining the classroom, fighting, etc. Now come before I make it any higher!"

Shinpachi sighed as he looked at them go, wondering how the hell was he ever going to pass the fourth year if Kagura and Sougo wrecked havoc in every class they took together. Worse, their lazy silver haired teacher hardly ever bothered stopping them, not unless his beloved Jump or strawberry milk was in danger. He sighed again. Being the only sensible person in a bunch of idiots was definitely hard.

Soon enough, it was time for lunch. Hundreds of students milled into the Great Hall, chattering and laughing loudly. The plates were heaped with delicious food and for a while, all talk ceased as everyone dug in. At the Gryffindor table, Kagura was eating enough for five, even as the first years watched on with amazement. Beside her sat Tae and Kyubei, who were talking merrily about clothes and curses. Further down, an enraged Hijikata could be heard yelling at Sougo, who had apparently cursed his mayonnaise bottle so that only soy sauce came out. Sougo himself sat at the Slytherin table, giving a lesson on sadism as he ate, while Imai Nobume gave a practical demonstration to anyone who touched her precious doughnuts. Shinpachi ate at the Hufflepuff table, restraining himself from punching the raving gorilla, aka, Kondo, sitting beside him and fantasizing about his sweetheart. The Ravenclaw table mostly consisted of girls, who were a lot less rowdy than the rest. Tsukuyo maintained order at the table as she calmly chatted with her group of friends, who were nicknamed 'The thousand blossoms'.

The teachers' table too was far from any model of order, with Potions master Gintoki reading Jump and delivering a loud commentary on each page, Charms master Hinowa levitating sauces as she tried to get the perfect combination for her child's favorite dish, Defense teacher Matsudaira fingering a cannon and a barrel of wine and Transfiguration master Katsura, or rather, Zura, singing with his duck Elizabeth. Sakamoto, who taught Care of Magical Creatures, was presently thumping the Headmaster, Shige Shige on the back, the latter apparently having choked on a bone. In other words, the Great Hall was simply like a gigantic, noisy, but quite cheerful fish market, minus the smell and the fish.

At the Gryffindor table, Kagura had just launched into a tirade about Sougo, Tae listening patiently to her 'little sister' blowing of steam.

"Would you believe it, Anego, that jerk dared to call me a gluttonous pig in Potions! Then he even dropped freaking firecrackers into my potion, and I had been toiling for a whole hour to make that, uh huh! Then Gin chan gave me detention for a whole month, just because of that goddamned Sadist! Now I'm gonna have to help him with all his overdue work, that lazy sugar addict! I hate the guy, I hate him, I hate him, hate him!"

"My my, Kagura chan, that's a lot of hate. But consider it; you're never bored in Gin san's class because you keep arguing with Okita kun, ne? That's a good point right?"

"Maybe, I guess so… But that doesn't change the fact that he's an insufferable sadist, uh huh!"

"Hmm, I rather wonder about the 'insufferable' part…"

Later that night, after dinner, Kagura trudged down to the staffroom for her detention. She could only imagine how much paperwork would be piled up, seeing how lazy the silver perm was…. Cursing Sougo under her breath, she kicked open the door to see Gin reading Jump with his legs propped up against the table, three desks chock full with various documents and magazines, which were presently being sorted by the very boy she had just been cursing.

Kagura nearly dropped her wand in horror, before turning to Gin and yelling, "Gin chan, why is this jerk here, yes? I do not want to even see him right now, uh huh, forget doing detention with him!"

"At least I'm good looking, China. You think I wanted to waste a month with an ugly, foul mouthed brat like you?"

"WHAT DID YOU JUST CALL ME, YOU SADIST?! I'm gonna kill you by throwing you to the Giant Squid, turning you into a worm and squishing you…." She stopped at this point to conjure up a few more innovative threats, and besides, she was quite out of breath too.

"I can probably think of worse tortures than those, China. How about being roasted in a pile of sukonbu or wandering without a wand into the Forbidden Forest…"

"You sadist, don't insult sukonbu!"

WHACK!

Kagura and Sougo cowered as Gin brandished his rolled up magazine over their heads, a number of veins popping on his face.

"YOU TWO ARE SUPPOSED TO BE WORKING, NOT INSULTING EACH OTHER! WHAT IS THE FRIGGIN' POINT OF DETENTION LIKE THIS, HUH? IF I HEAR ONE MORE WORD FROM EITHER OF YOU, YOU'RE GOING TO BE SCRUBBING THE ENTIRE TROPHY ROOM, WITHOUT MAGIC, FOR A YEAR! NOW BE QUIET AND GET TO WORK; I NEED TO SUBMIT ALL THESE AT THE END OF THE MONTH!"

Sougo gulped unwillingly as he grabbed the nearest bunch and set about sorting it. Beside him, Kagura did the same, in double quick time; she hated scrubbing even more than paperwork. It was one of those rare occasions where they had a silent agreement to obey Gin; the last time it had happened was three years ago.

For an hour, everything hummed on as usual, as Gin browsed through magazines and the duo filed away the paperwork. But the usual was also extremely boring for Sougo. So he sneaked a look at Gin, and after verifying that his teacher was now deep in another world, he hissed at Kagura, "Hey, just how slow are you?"

The girl's eyes flashed dangerously, but she only stuck her tongue at him, striving to make the childish gesture as rude as possible. He smirked at that, mouthing another choice insult at her. Soon, before he knew it, the papers he was arranging were back in the mess and Kagura's wand was stuffed back up her sleeve.

They glared at each other, barely restraining themselves from dueling, before Kagura had an idea. She whispered to him, "Oi Sadist, how about we make this a competition, yes? Dragging this chore out just will be horrible, yep."

"Why would I even want to compete with you in something as worthless as this, China?"

"So you are scared of losing in something as worthless as this, yes? I knew-"

"Who do you think you're talking to, China? I can finish that entire pile tonight, even though it would probably take you an entire year!"

"Then it's a showdown!"

Half an hour later, Gin reckoned that he was hallucinating as he observed the amount of work the pair had go done. Seems like I'm really diabetic now…. But does diabetes even cause hallucinations? But there's no way this is reality, I'm not going to believe those two are seriously handling this goddamned trash with such zeal. Oh well, I've seen weirder things…. Looks like I won't be scolded for failing to submit paperwork this year. The look on Zura's face…. Ah, the guy might even have a heart attack!

Grinning evilly, Gin finally dismissed Sougo and Kagura, who were also half asleep by then, and sent them off, lazily reminding them to come the next evening as well.

A/N: So there ends the first chapter! I think this story's gonna be like, five chapters long or so, but honestly, I never know…. Still, I really hope that you enjoyed it, if not, I'll try my best to improve in the next chapter. If there are any corrections regarding the story, like, errors I might have made in description, or factual mistakes, feel free to point them out, through a PM or a review! And questions regarding the characters and their houses, etc, are very much welcome too!

Also, I think I should mention that school starts next Wednesday for me, so there might be delays in posting chapters, but I'll definitely try to best to be on time. So if I'm late, you'll really be doing me a favor if you PM me and give a stern reminder to stick to my words!

So please do take some time out to review, your response totally makes my day! As ever, favorites, constructive criticism and anything else are very, very, much appreciated!

Thank you very much for reading! See you in the next chapter!