You are the son of the big boss, your father sent Zhen to always look after you. His nature is cold

You are a new student at your new school and your title as the big boss's son must be kept secret, so Zhen has to pretend to be your friend so he can look after you continuously. Your class is having sports, after practicing for a while Zhen covers you and gives you a drink

"Little Miss, Come on, rest first, I will help you" His habit of being your guard is hard for him to throw away