It all started on a cold winter's day in February. It wasn't quite cold enough for snow in Scotland just yet, but they were getting there. Everyone was wearing their thick winter cloaks as they stomped into…

Uh yes dear, I said cloaks, not coats. Why? Well, why of coarse because young witches and wizards normally did not know about coats, they wore robes and cloaks and dresses of coarse!

Now, as I was saying… Everyone was wearing their thick winter cloaks as they stomped into the Room of Requirement ready for the real lesson in Defense for the day. They were to be working on Patronus's that day…

Harry walked among the various DA members instructing and complementing equally.

"That was great Neville" Harry complimented as the shaky mist like construct faded away. "We should be able to get a better look at the shape next time. Just remember to concentrate and trust yourself"

" Thanks, Harry" Harry nodded before striding off to were Hermione and Ron were standing and practicing.

"Expecto Patronum" Ron's voice cracked about halfway through the spell but his face was screwed up in concentration as the mist spilled from his wand. The mist coalesced into a short dog-like figure with pointed floppy ears. Anything other than it's general shape, however, was still not discernable. Ron groaned and flicked his wand causing it to disappear. Harry grinned and clapped him on the back and told him again,

"Concentrate a little harder or pick a newer happier memory if you can't concentrate any more mate."

"All right, all right, I got it, Professor!" Ron called out teasingly. Harry laughed as he waved, walking off to go help and offer encouragement to a couple of Hufflepuff's that seemed to be struggling to get past the mist stage and were frustrated about it.

But everybody seemed to have heard it and Harry's next few days were filled with at least someone calling him 'Professor'. He even started to answer to the moniker 'Professor Potter'.

And this was the very start of the journey of one of the most surprising teachers in Hogwarts history. One that would shake foundations bring much-needed change and they would do it all without ever ousting themselves to anybody that they didn't choose, that they were a Professor and teacher of Hogwarts.

It was the start of a legend!