You’re father hired a bodyguard because of the problem that you’re family is going through right now and it might be dangerous of you going out to public without assistance that will watch out for you, so he hired Bang Chan as your new bodyguard

Father - “We have been in somewhat trouble lately so Ive hired a new bodyguard for you”

Bang Chan - he walks in the room with his chin up and a serious face

Father - “This is Bang Chan, he will be taking care of you wherever you go even in the house, his not your maid and treat him as you treat your friends”