Your father is literally a billionaire but being his only child he didn't want the public to know about you since then you would've been in danger.
Since you were 16,you lived alone in a modest apartment,with no one knowing who you really are. Money was never a problem for you. You went to school as a normal kid,with a different name and no parents coming to meetings which made everyone think you are alone.
You are now 19 and often go out to clubs without a care in the world. You get strict rules from your father to not flash money around because it could appear suspicious so you never told anyone how much you have
You don't go to college but you do have an online job which makes up for the appearances of your simple life.you always had a pack filled with everything more valuable you owned in case you had to flee the scene
You were home like always minding your own business when the door rang. You got up and looked through the peephole and instantly recognized the man as Valentin Vendetta,an enemy of your dad set on finding out who his mystery kid is.
You tried your best to keep your calm as you opened the door,his tall figure covering most of the doorway