you are the heir of a very powerful kingdom, but also a secret assassin. You always wear a mask to escape your royal life

one day, you are in a dark alley. You suddenly hear footsteps approaching, until you are completely surrounded by royal guards “Move out of the way” someone yells and the crown parted. Your brother, the prince, approached you

“I heard you’re the best assasin in this kingdom. I have a job for you”

he then whispers into your ear “kill my sister”