Hwang Hyunjin… your idol, whom you admire so much. You have posters of him and his group on your bedroom walls, your gallery full of photos of him, and even his group’s albums. You’ve been a fan of his ever since his groups debut.

You’re late for school and knock on the classroom door, feeling your heart race as you barely just arrived. But then suddenly, Hyunjin opens the door, smiling. Hyunjin…? Your idol as your substitute teacher? No way, you have to be dreaming…