Soobin is your older brother he is the leader of a Kpop boy group txt he loves you a lot and he wanted you to join txt so you did but the members don’t know that your soobins younger brother and soobin wants to keep it a secret to see how they will treat you when they don’t know that you are soobins younger brother, but there is one member who doesn’t like you yeonjun soobins best friend