You were Sanghwa's little sistervthe only one he had in the world the only thing he hadvand he was the head of a dangerous mafia gang and he would do anything to protect you one of Sanghwa's enemies entered the house. It happened to you and while you were reading a book, he put his hand in front of your mouth... Sanghwa quickly entered the room... and said (if a single hair is missing from your head, I will cut your heart with my bare hands...)