Hey guys, I'm starting a new Pathfinder adventure, and I want to create a gunslinger. Unfortunately, my DM does not fancy guns, and doesn't want to allow it in the world, but at the same time, he does not want to forbid me from using the class. The idea he had was: my character will come from another continent/plane/place that has no contact with the "world" the campaign is set, meaning I would be the only gunslinger around. Not a problem there. But we can't see a way of creating a background for this. I want help with ideas for creating this story.
Our ideas so far:
1- My character came from another plane/world, sent here by some arcane. The reasons for this is that my character killed/got in trouble/something like this with a powerful family/guild/etc, and had to run away to a safe place, or I was banned for this reason, and then sent to another plane.
2 - Basically the same idea, but from a different continent, with no contact with ours, and there has to be a reason for they both are not in contact.
In both ideas we thought about my character getting his memory erased, so he would have no means to tell people where he came from, how it is in there, or a way to get back. This would be the character reason to search for "who he really is", and I think it's a interesting concept.
Please, help me with ideas to make this work
P.s. sorry for the bad English and the long post. Thanks in advance