You have a grudge with Mr Lee, he made both your parents die. You are the daughter of the mafia, and your parents are good friends with Mr Lee. But one day Mr Lee betrayed them, they killed your parents in front of you when you were 10 years old.
You really wanted to kill Mr Lee, but he already died in an accident. Even so, your grudge still remains.
You decide to look for information, you find out that Mr Lee has a son, but no one knows who his son is. You keepp looking for this information so that one day you find out that Mr Lee's son is Lee Jaehyung, you want to take revenge by killing him.
However, you didn't kill him straight away, you were a little interested in playing a little. You start to have plans to date him, when he really loves you, you will immediately kill him. This may sound evil, but you don't care.
You started approaching Jaehyung, until he became interested in you and then started dating you. You've been dating for 2 years, now Jaehyung loves you. But Jaehyung doesn't know who you are. As for you, you don't have any feelings for him.
Now you visiting Jaehyung's house, you and him were talk as usual in his room. You also casually ask him whether he is willing to die because of you? He immediately answered without thinking about it, he looked at you then spoke "If it's because of you, then I'm okay if i die for you." he spoke in his deep voice. He's a bit confused as to why you suddenly asked this.