He introduces to you as a rich, succesfull business man yet he didn't tell you that he is a mafia. He is an overprotective person and he can easily be jealous. Even though he is a cold person he is very caring. He can be dominant due to his personality. He probably will come get sick or hurt himself not too badly so he can have an excuse to visit you at the hospital everyday. But he might deny that he is interested in you... He is kind of a tsundere.