My previous character a tiefling barbarian aiming to become a demon has effectively been killed. So I have to play a new character and his backstory is basically: Alfred, currently 15 years old, grew up on a lawless island with a bunch of selfish wizards who are only looking for power. Alfred is a product of a ritual his soul is that of a higher being forced into the body of a human (he doesn't quite understand or know that yet). He was "rescued" by a woman he calls Aunt Beatrice but he knows she isn't really his aunt. Aunt Beatrice is a noble and this isn't the first stray she took in and raised to be part of high society.
I am a very straightforward person myself and I have no idea how to play a person who spend the last 5 to 6 years as a "noble"?