A unique chance allows Harry to get away from the chaos surrounding him after the war with Voldemort, in an accident he finds himself back at Hogwarts but not in his time.
"Welcome to Hogwarts, a new year for your Professors to fill your heads with useful information and exciting spells, but before we tuck into our excellent feast I must make a few announcements, firstly our new Defence Against the Dark Arts teacher is Mr. Harry Potter here," At his words a tall young man no older than 21 stood up and gave a small wave before falling into his seat again.
"And no, there is no relation to our Head Boy James Potter before we start making vicious rumours" Dumbledore continued. He announced a few more things, but most people's attention was on the newcomer.
Harry sat there nervously listening to Dumbledore with one ear, 'I can't believe what the hell I've got into' He thought. He was aroused from his musings by Dumbledore starting the feast, he tucked into the food eagerly to avoid the students staring at him.
So obviously Harry had 7th year Gryffindor and Slytherins first thing the next morning, at his first lesson. 'I bet Dumbledore was conspiring with McGonagall to do this to me' He thought on the way down to his classroom after breakfast.
He walked down the corridor to the classroom and was met with stony silence and stares at the doorway to the Defence classroom "Do you greet all your new teachers like this?" He laughed.
"Oh no of course not" A student piped up his mother of course "We are just really curious about you."
"Well let's not chat out here let's go inside" Harry said as he opened the door and lead everyone in.
"So I'm your new Professor as you can all tell," Harry started once everyone found themselves a seat and quietened down. "I'm sure you are very experienced in receiving new Professors so we shall just get stuck in with the work. I'm sure the rest of your teachers will tell you all about the importance of this year especially Prof. McGonagall so I'll save myself 10 minutes and just trust you to know what is right for you." Harry surveyed the class; they were all listening to him that was a good sign.
"Any questions before we continue?"
Quite a few hands shot up.
"Anything related to the course or the lessons?" Harry continued, all the hands dropped.
"Okay then ill let you ask me a few questions about me and ill answer a few." Harry relented resting against the edge of his desk.
He pointed to Sirius Black who seemed the most eager to be picked.
"How old are you?" He asked cheekily.
"21"
"Really?"
"Yeah"
"But, no offence you're a but young to be a teacher"
"If you are questioning my experience as a teacher I can tell you that Dumbledore believed I was qualified enough and I have dealt with a fair amount of Dark magic that I believe some of you may not experience in your lifetimes." Sirius looked satisfied and turned to James who gave a non-committal half shrug and they leaned back in their chars to let the rest ask questions.
A girl next to Lily started to wave her risen arm in the air trying to get Harry's attention.
"So are you single, I mean you don't have a girlfriend do you?" She asked.
Harry just stared 'what?' he thought 'she's old enough to be my mother!'
"Um well I have a girlfriend back home if that's what you mean."
"But are you serious, because like you're leaving her for at least a year." She continued.
"Well actually I say girlfriend but I proposed to her before I left for her we are supposed to get married next summer" All the girls apart from the blonde girl asking the questions swooned and awwwed, the boys rolled their eyes at them.
"So how did you propose?" A girl asked.
"Anyway, any other questions and then we can get back to the work we are supposed to be doing."
Lily put her hand up slowly.
"Yes miss?"
"Evans, Lily Evans, I was wondering, what kind of dark magic did you encounter?"
Harry looked at her, 'she's just as smart as everyone made her out to be'
"Well Miss Evans, it is the sort of magic that I would be ashamed if anyone in this classroom ever discovered, the sort that is restricted and banned for extremely good reasons and can give anyone in this room nightmares, no matter how hard you think you are," His eyes flickered over to the Slytherin side of the room where they all sat surveying him silently "And I wouldn't like to think of anyone in this room being able to perform this type of evil."
"The world isn't divided into good and evil Professor" A young slytherin yelled out.
"Let me guess someone told you its divided by those who seek power and those too weak to grasp it?" Something like that?
The Slytherin nodded.
"Well you are right in one aspect the world isn't black and white, there are varying shades of grey, I know that better than most people, but I do believe that in some way, there is good or evil. If I asked you all if you believed that Voldemort was good or evil what would you say?"
"Evil" Lily whispered.
"Right Miss Evans, he is evil, because he does not value human life, he kills with no remorse so that makes him evil, not just bad. And Dumbledore has made it clear to me that this year there is more emphasis on defence as well as your ordinary NEWT lessons, because who knows when he'll knock on your door." Harry turned to write on the board when a voice said. "What else can you do but to join him or die?"
"What would you see greater glory in? Joining him, or dying? I know what I would do"
"And what's that?" James asked.
Harry turned and looked his father in his eyes. "I would rather die James, than join a man that has killed people that I loved because at the end of the day it is only you that can decide whether you are good or evil, Voldemort made his choice and everyone in here must make their decision, between what is right and what is easy."
Harry walked to the board and wrote the word 'unforgivable's' on the board, and begun his lesson.