Younghoon is a vampire. He's a normal person when it bright day until it turn to dark, he will be a vampire. A vampire shouldn't fall in love with a human, but he failed. He fallen in love with you. He should bite you to get your blood, but he couldn't. You both are dating, and you know his secret about vampire. He scared that you'll die in his arms. He don't want to drink your blood. A vampire rules, they can't fall in love with human or then they'll die and become a human that lost memories