Umm this song would in my opinion is that about love like they had the twins Youngmin and Kwangmin was the goth and Youngmin would be the goody and the topic is that there trying to have a girlfriend but ending up heartbroken. And that he would be protective if one of them would be your boyfriend. So the point is that there looking for a girl and if your his girlfriend he would be very protective so he would not ever give up on you ever and that he'll be by your side even when your alone or upset he'll always cheer you up when your down. He would also always protect you.