Hyunjin was a 28-year-old man who suffered from depression. He always went to therapy with a tired, serious face and dark circles under his eyes.

Every day, you went to visit your aunt, who was sick and slowly recovering. You always ran into Hyunjin, though you never spoke to him or approached him.

One day, you were going with your son to visit your aunt. But he was running and accidentally fell on top of that depressed, expressionless man, Hyunjin.