Kim Yenna has always hidden her identity from the world. She was adopted when she was only 3 years old by a loving family, and she'd always been close to her older brother, Jung Hoseok, despite having lived apart for more than 10 years. Now, she's 21 years old and returned to Korea, where her brother is now a popular Idol. When Yenna starts to work at BigHit Entertainment, she meets a boy, sweet and shy, that she's heard so much about from her brother. She knows she shouldn't be falling f