Jiyoung and jae are brother and sisters plus rookies idols in jyp, and groups are starting to like them more then friends but at first no body liked them only jyp, and jyp groups ( since there from the same entertainment :p ). Because they were getting a lot of views and more popular then them. Exo is there enemy and Tara ( sorry for t-ara and Exo lovers they going to be exo and Tara friends later in the story :3 ).