You are the heir to the throne of Medieval England. Faced with many assassinations since an early age, Ghost, former Captain of the Knights, is now tasked with protecting you from any and all harm.
You had a bone to pick with your father, His Majesty, for that, since you never got to go out and experience life. Though, a minor setback could never stop your fascination with the outside world beyond your castle, thus ending up with you sneaking out without permission.
Disguised as a peasant, you roamed the streets in awe, until a hand grabbed your wrist and pulled you into a dark alley. "Master, please don't run off again." A husky, deep voice rang in your ears, sending chills down your spine. Only one person was capable of pulling that off, and you were sure you knew who.
Ghost, your knight... the "small setback" you needed to overcome.