Summary: Hermione Granger got stuck in the past. Now she has to pretend she's a man while teaching a DADA class filled of both Gryffindors and Slytherins. ONE-SHOT HG/SB Gender-Blend!

Fandom: Harry Potter

Main Pairings: Hermione Granger/Sirius Black

Rated: K+

Genres: Drama, Romance

Warnings: Time Travel, Genderblend

A/N: Hi! and welcome to my new one-shot featuring out favorite SB/HG pairing. Sirius in this story is of age. He's 17 and Hermione is 23 years old. I do not and will not own Harry Potter. I just own the plot and my own original characters.

Please read and review! :)

X.x.X.x.X

The New Guy

X.x.X.x.X

"Prongs, who's the new guy?" Sirius Black asked to his best mate over the crowded area of the Great Hall. James Potter tilted his head confused at Sirius's question.

"Who?" He asked,

"There walking toward the teacher's table." He pointed,

A man with short light brown-haired with chocolate-brown eyes walked passed them toward the teacher's table confidently. He was tall and severely slim for a man. He looked very young, a little over their own age. His clothes were plain and paled in color, meaning obviously to them that he's broke. His skin somewhat tan, meaning he might spend sometime out doors, but nonetheless he felt very odd. James couldn't place his finger on it.

"Maybe he's our new Defense Against the Dark Arts teacher," James suggested.

A short slim boy with sandy-colored hair sat down in front of Sirius, catching the end of Jame's comment.

"He can't be. He's around our age." Remus Lupin said, placing some toast and eggs onto his plate. Remus Lupin was the most sensible in their small group. The stranger was young and by common logic he's doesn't have enough experience in the field.

When the stranger passed a few girls from the end of the Slytherin table, they all leaned forward giggling. The stranger paused in his stride. A look of disgust flash among his face till he masked it and smiled falsely at them.

"Good morning ladies." His voice was somewhat feminine. He sat down beside Albus Dumbledore who had the usual twinkle within his blue eyes at the stranger, beaming at him with the usual Dumbledore cheerfulness. Sirius strained to listen their conversation the best he could without looking remotely suspicious.
"Hi, Padfoot!" screamed Peter happily, and Sirius hissed to himself in annoyance when Peter unusually bounced next to him happy. Peter was never happy, not in the mornings.

"What got you in a good mood today, mate?" He hid his annoyance well.

Peter haven't noticed.

"I was cornered in the halls." Peter answered, and Sirius, James and Remus exchanged a few looks among each other.

"Well that's nothing to be happy about Pete."

"No, that's not it. Well I was in trouble but this stranger came in with one spell he ran those snakes off! We have a new DADA teacher." Peter beamed, and for some reason Sirius couldn't find it in himself to be happy for his friend. He didn't even know what he should be happy for.

Twenty minutes had passed, and Dumbledore stood from his seat clapping loudly overhead silencing everyone in the Great Hall.

"Good morning, I have some news I wish to inform you all. You all have a new DADA teacher this year, and he had just arrived this morning. Please give a warm welcome to Mr. Henry Granger." Dumbledore introduced the young man beside him. Henry Granger stood up from his seat with a small smile and a bow to them all, before sitting back down nervously.

"Why don't we give our dear old professor a very warm welcoming?" Sirius whispered to James with a smirk.

Hermione Granger is having a very awful day. This morning Ronald, in his moment of grief and weakness had tried to steal her time-turner to go back in time to save Fred, only to have her dropped the object on the floor sending her back to 1977. Since she was a good five years older than the Hogwarts students, she couldn't be placed as a normal student till she find away back home, but Dumbledore had suggest that she take the DADA post this year. Since Voldemort haven't been defeated in this timeline she had made sure to go to the extreme length at disguising herself. If Voldemort catch wind of her, a time-traveler from the future, he will surely make her his number one target and to her better judgment she spend thirty minutes in Dumbledore's office applying every single strong glamour charm over her features to mask herself.

It didn't help matters when a bunch of Slytherins girls had tried to flirt with her this morning and it didn't help when she walked into her classroom to prepare the day's lesson this morning, that she felt something tickled down her head to toe. Her hair had turned bright pink and her robes had turned into an ugly muggle orange dress, that one's grandmother would most likely to wear. Yes, she had been pranked. She knew of this, she wasn't stupid. She spent a large amount of time with both Fred and George in the past before the war.

She heard a few chuckles from the boys and a few gasps from the girls in the classroom.

Just bloody brilliant.

Hermione knew who was behind this and even through she tried her best to avoid them this morning, now she couldn't do so. Her temper was running thin, making Professor Severus Snape look like an angel next to her.

She took a deep breath.

"Professor Granger, are you alright?" a 7th year Slytherin girl asked.

Hermione waved her wand and soon the pink in her hair turned back into her normal hair color and she transformed the dress back into her teaching robes. The tension around her thickened when she didn't replied back to the girl.

"POTTER, BLACK! 20 POINTS FROM GRYFFINDOR AND TWO WEEKS WORTH OF DETENTION STARTING THIS AFTERNOON WITH HARGID IN THE FORBIDDEN FOREST AROUND 9 P.M FOR BEING IMMATURE AND DISRESPECTING A FELLOW PROFESSOR!" Hermione shrieked. Everyone was stunned. They haven't gotten over names yet, and she already singled out the two troublemakers. Her scream sounded so feminine that everyone was startled even more.

Sirius Black and James Potter gaped at her from the back of the classroom.

"P-Professor how do you know our names?" James asked, and he swore he heard a chuckled from one Severus Snape behind him.

"Oh I had been warned about you two! Now quiet down and put away your wands-" Hermione turned to the class sharply,

"and since those two gits decided to fool around with magic this morning, we will be writing instead of learning new defensive spells that I had planned today."

Everyone groaned, putting away their wands, then get out their DADA books, parchments and quills.

When the bell finally rung an hour later the 7th years had quickly packed up and leave leaving both Sirius and James behind. Remus glared at his best friends telling them not to make any more trouble before heading off to Charms.

Sirius walked up to his professor desk,

"Professor?"

Hermione looked up at young Sirius Black, almost got caught within his grey eyes. When she was around 15 she had a small crush on the ex-convict but her feelings had completely changed at the end of that same year, when he had died. Everything was stressing, the fight, the struggle and comforting Harry had pushed her own feelings aside.

She felt herself beginning to tear up, seeing him here alive and well living happily. It's a shame that he use all his energy in pranking.

She gathered her composer, she had to remain tough and strong.

"Yes, Mr. Black?" She pressed her lips tightly together.

Sirius eyes lingered on her lips and a wave of confusion wash over him. He felt his own heart beginning to speed up with each second just standing in front of him. He fought back the lump in his throat,

"I'm sorry for what I did to you at the start of class."

Hermione's eyes narrowed.

"Don't think this will excuse you of detention, Mr. Black. I assure you it will not."

"I know that, Professor. I just want to tell you I'm deeply sorry." He was burning up, and James stared stunned behind him wasn't helping anything. He was confused, and startle. He knew what he was feeling and he could tell anyone that asked him if he's gay, his answer will be a bloody no. He like birds not blokes.

"If that's all, then hurry up to your next class." Hermione spoke softer than the sharp tone she had used with him.

Sirius smirked at her,

"See you soon, Professor."