Dongkyu was in the living room with his guitar singing "18" by 1D, you knock the door since Dongkyu is the best friend of your boy best friend Eddy and they live together, and today you decide to visit Eddy but he wasn't at the moment

You knock the door one more time and Dongkyu didn't have any other option than stop singing and check who is it which pissed him off even though he didn't knew it was you

Who the hell is it?