Cast
Lee Jung-jae
Jung-jae • 70 episodes
Kim Hee-seon
Hee-seon • 70 episodes
Lee Min-woo
Min-woo • 70 episodes
Lee Hyo-jeong
Young-woong • 70 episodes
Kim Nam-ju
Music teacher • 70 episodes
Kim So-yeon
• 70 episodes
Ahn Yeon-hong
• 70 episodes
Cho Hyoung-ki
• 70 episodes
Park Ji-yoon
• 70 episodes
Park chul
• 70 episodes