Disclaimer: This applies for this entire story. I do not own any of the Harry Potter stuff, J. K Rowling does.
Prologue:
(A/N: This story is set 3 years after Harry's last year at Hogwarts. Harry killed all the Death Eaters and killed Lord Voldemort in a duel in his final year, with Draco's help. Harry has been dating Ginny (Weasley) since his 6th year, and they recently decided to get engaged. It is a total secret though as they dated secretly and are afraid of what the Weasleys will think.)
Harry Potter sat at his window, staring out at the sky, when his snowy owl, a female named Hegwig, soared toward him. He ducked back as Hedwig flew in. She dropped the letter on a table and perched on Harry's shoulder.
"Thanks Hedwig." Harry muttered. He moved towards the letter and picked it up. It was from Dumbledore at Hogwarts! He opened it hurriedly. The letter read:
Dear Harry.
I am pleased to offer you a position at Hogwarts as Defence against Dark Arts teacher this year at Hogwarts. You will also be the Head of the Gryffindors and Gryffindor Tower. The Hogwarts Express will leave at 11:00am sharp on September the first. Hopefully I will see you then. Please reply as soon as possible.
Your friend,
Albus Dumbledore, Headmaster of Hogwarts.
Harry quickly scrawled a reply saying he'd love to teach at Hogwarts, sent it off with Hegwig, then went back to staring out the window.