What happened to sejin’s brother! Does anyone know?

I do. He's alive. We'll see him again at some point.

Thank you!!! I have peace of mind now!! Bless you!

Sure, but I'd hold on to that peace of mind!

Spoiler















But yaba's older brother sexually abused yaba when he was little,cocaina shows the place where yaba's older brother hid yaba yaba,when cha yiseok fought with yaba's brother,cocaina shot yaba but sas stopped by yiseok who was already seriously injured bcs of yaba's older brother's actions.bca of the deep sadness over cha yiseo's death,taba cried hysterically and everyone at the scene was devastated.cha yiseok woke up from the deaf,yaba lost his voice in exchange for cha yiseok's life,cocaina list his hearing so that he could not sing anymore