Look at the prologue.

                                                                                  Harriel's pov 1 month later

I then went out to a bar and met the two people who would change my life forever (besides Castiel, Crowley, Michael,Tonks, McGonagall, Charlie, Bill, the Twins, Flitwick, and Lucifer).

"Hey you're new in town aren't you? My name is Dean Winchester and this is my half-brother Sam Winchester. Do you believe in the supernatural?" The attractive man asked me.

" If you're referring to hunting then yes. Also my name is Harry Potter. You see I'm a wizard, but unlike you're kinds of witches I didn't make any deals with demons. You see our Father gives people magic. My world has centaurs, vampires, phoenixes, dragons, acromantulas, basilisks, nundus, chimeras, griffins,hippogriffs, sphinxes, grindlows and loads of other creatures you haven't seen." I told them in confidence.

" So wait what you're saying is that some people are naturally born wizards and don't make deals with demons? And that all of the creatures that we never hear of except in myths and legends are real just not in our world right?" Sam asked.

"Correct. Also could I stay at your place please? You see mine is outdated and is being remolded right now and I'll help you hunt demons and monsters." I asked them.

"Sure. You can be on the coach at Bobby Singers house." Sam replied to me.

I was soon following the 1967 Chevrolet Impala on my motorcycle.