Bang Chan

We trained together for a long time and became friends during company meetings. After a debut survival show between my group and Chan's group, the latter won, and I remained a trainee.
A year later, my group debuted, and I became the leader. During this time, Chan and I didn't lose touch; in fact, our communication improved.
Another four years passed. Our groups began to frequently compete for chart rankings, having become the company's leading acts.
I was sitting alone in the studio with my headphones on and my eyes closed, and I didn't even hear someone knock on the door and then come in.