Song Jieun and Bang Yongguk have been the best of friends ever since they meet at an audition to be an artist under TSE.They both failed to get in on their first try,and decided to train together and try agian.During those times jieun developed feelings for him,when she say how much he loved music and his tough and sweet personality.When the long and hard training was done the re audition and passed.After they continued being close and even did a song together.